criyle/codenet-compile-errors huggingface dataset:
Language: C++

#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
using ll = long long;
using namespace std;
#define rep(i,n) for(int (i)=0;i<(n);i++)

int main() {
	long double a, b, h, m;
	cin >> a >> b >> h >> m;
	long double x2 = 0;
	long double x1 = 0;
	long double pi = 3.14159265358979323846;
	long double aa, bb;
	aa = 30 * h + m / 2;
	bb = 6 * m;
	
	if (bb == aa)cout << "0" << endl;
	else if (bb > aa) {
		x2 = a * a + b * b - 2 * a * b * cos((11 * m - 60 * h) * pi / 360);
		x1 = sqrt(x2);
	}
	else {
		x2 = a * a + b * b - 2 * a * b * cos((60 * h - 11 * m) * pi / 360);
		x1 = sqrt(x2);
	}
	printf("%16.16lf", x1);

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:21:50: error: 'cos' was not declared in this scope
   21 |                 x2 = a * a + b * b - 2 * a * b * cos((11 * m - 60 * h) * pi / 360);
      |                                                  ^~~
a.cc:22:22: error: 'sqrt' was not declared in this scope
   22 |                 x1 = sqrt(x2);
      |                      ^~~~
a.cc:25:50: error: 'cos' was not declared in this scope
   25 |                 x2 = a * a + b * b - 2 * a * b * cos((60 * h - 11 * m) * pi / 360);
      |                                                  ^~~
a.cc:26:22: error: 'sqrt' was not declared in this scope
   26 |                 x1 = sqrt(x2);
      |                      ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
#include<math.h>
 
int main() {
  int a,b,h,m;
  cin >>a>>b>>h>>m;
  double r,r_a,r_b,d;
  r_b=(360*m)/60;
  r_a=(360*(60*h+m))/12*60);
  r=r_a - r_b;
  d=sqrt(a^2+b^2-2*a*b*cos(r));
  cout<<d;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:27: error: expected ';' before ')' token
   10 |   r_a=(360*(60*h+m))/12*60);
      |                           ^
      |                           ;
a.cc:12:15: error: invalid operands of types 'int' and 'double' to binary 'operator^'
   12 |   d=sqrt(a^2+b^2-2*a*b*cos(r));
      |          ~~~~~^~~~~~~~~~~~~~~
      |           |     |
      |           int   double
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int A, B, H, M, C, D;
  cin >> A >> B >> H >> M;
  D = (H + H * M / 60.0) - M;
  int E = cos(D);
  C = A * A + B * B - E * 2 * A * B / C.0;
  cout << C << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:40: error: expected ';' before numeric constant
    9 |   C = A * A + B * B - E * 2 * A * B / C.0;
      |                                        ^~
      |                                        ;
Language: C

#include <stdio.h>
#include <math.h>

int main(void){
  int A,B,H,M;
  scanf("%d %d %d %d",&A,&B,&H,&M);
  
  double the = 30 * H - 6 * M;
  
  if(-180.0 <= the && the <= 180){
    printf("%lf",sqrt((double)A^2.0 + (double)B^2.0 - 2 * A * B * cos(the)));
  }else{
    printf("%lf",sqrt((double)A^2.0 + (double)B^2.0 - 2 * A * B * cos(fabs(the))));
  }
  return 0;
}


Compiler output:
main.c: In function 'main':
main.c:11:32: error: invalid operands to binary ^ (have 'double' and 'double')
   11 |     printf("%lf",sqrt((double)A^2.0 + (double)B^2.0 - 2 * A * B * cos(the)));
      |                       ~~~~~~~~~^~~~~~~~~~~~~~~~
      |                       |             |
      |                       double        double
main.c:13:32: error: invalid operands to binary ^ (have 'double' and 'double')
   13 |     printf("%lf",sqrt((double)A^2.0 + (double)B^2.0 - 2 * A * B * cos(fabs(the))));
      |                       ~~~~~~~~~^~~~~~~~~~~~~~~~
      |                       |             |
      |                       double        double
Language: C++

include <bits/stdc++.h>
using namespace std;

int main() {
  int A, B, H, M, C, D;
  cin >> A >> B >> H >> M;
  D = (H + H * M / 60.0) - M;
  int E = cos(D);
  C = A * A + B * B - E * 2 * A * B / C.0;
  cout << C << endl;
}

Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include <bits/stdc++.h>
      | ^~~~~~~
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope
    6 |   cin >> A >> B >> H >> M;
      |   ^~~
a.cc:8:11: error: 'cos' was not declared in this scope; did you mean 'const'?
    8 |   int E = cos(D);
      |           ^~~
      |           const
a.cc:9:40: error: expected ';' before numeric constant
    9 |   C = A * A + B * B - E * 2 * A * B / C.0;
      |                                        ^~
      |                                        ;
a.cc:10:3: error: 'cout' was not declared in this scope
   10 |   cout << C << endl;
      |   ^~~~
a.cc:10:16: error: 'endl' was not declared in this scope
   10 |   cout << C << endl;
      |                ^~~~
Language: C++

#include<bits/stdc++.h> 
#include <iostream>
#include <algorithm>
#include <cstring>
#include <cstdio>
#include <vector>
#include <cmath>
#include <set>
#include <map>
#include <queue>
#include <iomanip>
#include <assert.h>
using namespace std;
typedef long long ll;
vector<ll> g[200005];
#define pi 3.14159265358979
ll ok[200005]={0};
ll n,m; 
int main()
{
//	double a,b,h,m;printf("%lf\n",cos(3.1415));
	scanf("%lf%lf%lf%lf",&a,&b,&h,&m);
	double y=2*pi*(h/12.0+m/60.0/12.0-m/60.0);
	
	y=fabs(y);
	double ans=b*b+a*a-2*a*b*cos(y);
	printf("%.12lf",sqrt(ans));
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:31: error: 'a' was not declared in this scope
   22 |         scanf("%lf%lf%lf%lf",&a,&b,&h,&m);
      |                               ^
a.cc:22:34: error: 'b' was not declared in this scope
   22 |         scanf("%lf%lf%lf%lf",&a,&b,&h,&m);
      |                                  ^
a.cc:22:37: error: 'h' was not declared in this scope
   22 |         scanf("%lf%lf%lf%lf",&a,&b,&h,&m);
      |                                     ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define pi 3.1415926535897932
int main(){
    long double a,b,h,m;
    cin>>a>>b>>h>>m;
    long double angle=((11*m)/2)-(30*h);
    long double ans=sqrt((a*a)+(b*b)-(2*a*b*cos(angle*PI/180)));
    cout<<fixed<<setprecision(10)<<ans<<endl;
    
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:55: error: 'PI' was not declared in this scope; did you mean 'pi'?
    8 |     long double ans=sqrt((a*a)+(b*b)-(2*a*b*cos(angle*PI/180)));
      |                                                       ^~
      |                                                       pi
Language: C

#include <stdio.h>
#include <math.h>

int main(void){
  int A,B,H,M;
  scanf("%d %d %d %d",&A,&B,&H,&M);
  
  double the = 30 * H - 6 * M;
  
  if(-180.0 <= the && the <= 180){
    printf("%lf",sqrt((double)A^2 + (double)B^2 - 2 * A * B * cos(the)));
  }else{
    printf("%lf",sqrt((double)A^2 + (double)B^2 - 2 * A * B * cos(fabs(the))));
  }
  return 0;
}


Compiler output:
main.c: In function 'main':
main.c:11:32: error: invalid operands to binary ^ (have 'double' and 'double')
   11 |     printf("%lf",sqrt((double)A^2 + (double)B^2 - 2 * A * B * cos(the)));
      |                       ~~~~~~~~~^~~~~~~~~~~~~~
      |                       |           |
      |                       double      double
main.c:13:32: error: invalid operands to binary ^ (have 'double' and 'double')
   13 |     printf("%lf",sqrt((double)A^2 + (double)B^2 - 2 * A * B * cos(fabs(the))));
      |                       ~~~~~~~~~^~~~~~~~~~~~~~
      |                       |           |
      |                       double      double
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef long long unsigned int ll;
#define EPS (1e-7)
#define INF (1e9)
#define PI (acos(-1))
#define rep(i, start, end) for(int i = start; i < (int)(end); ++i)
int main(){
    double a, b, h, m;
    cin >> a >> b >> h >> m;
    double hdeg = (h * 60 + m) / 2;
    double mdeg = m * 6;
    double deg = abs(hdeg - mdeg);
    deg = 180 < deg ? deg - 180: deg;
    double rad = deg / 180 * PI;
    double ans = 0;
    if(deg == 0){ ans = abs(a - b)}
    else ans = sqrt(pow(a,2) + pow(b,2) - 2*a*b*cos(rad));
    cout << fixed << setprecision(16) << ans << endl; 
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:35: error: expected ';' before '}' token
   17 |     if(deg == 0){ ans = abs(a - b)}
      |                                   ^
      |                                   ;
Language: C++

from math import pi
from math import cos
from math import sqrt


a, b, h, m = map(int, input().split())
h *= 5
dist = abs(h - m)
ang = 2 * pi / 60 * dist + m / 60 * pi / 6

res = sqrt(a**2 + b**2 - 2 * a * b * cos(ang))
print(res)


Compiler output:
a.cc:1:1: error: 'from' does not name a type
    1 | from math import pi
      | ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int A, B, H, M, C, D;
  cin >> A >> B >> H >> M;
  D = (H + H * M / 60.0) - M;
  int E = cos(D);
  C * C = A * A + B * B - E * 2 * A * B;
  cout << C << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:5: error: lvalue required as left operand of assignment
    9 |   C * C = A * A + B * B - E * 2 * A * B;
      |   ~~^~~
Language: C

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

int main(void){
	int A,B,H,M;
	double MIN,thetaA,thetaB;
	double xA,yA,xB,yB,ans;
	char str[100000];
 
	fgets(str, sizeof(str), stdin);
	A=atoi(strtok(str," "));
	B=atoi(strtok(NULL," "));
	H=atoi(strtok(NULL," "));
	M=atoi(strtok(NULL," "));

	MIN=60*H+M;
	thetaA=0.5*MIN*2*M_PI/360;//(ラジアン)
	thetaB=6.0*MIN*2*M_PI/360;//(ラジアン)

	xA=A*cos(thetaA);
	xB=B*cos(thetaB);

	yA=A*sin(thetaA);
	yB=B*sin(thetaB);

	ans=sqrt( (xA-xB)*(xA-xB) +(yA-yB)*(yA-yB) );

	printf("%.10lf\n",ans);

	return 0;
}

Compiler output:
/usr/bin/ld: /tmp/cc3VBgNf.o: in function `main':
main.c:(.text+0x146): undefined reference to `cos'
/usr/bin/ld: main.c:(.text+0x172): undefined reference to `cos'
/usr/bin/ld: main.c:(.text+0x19e): undefined reference to `sin'
/usr/bin/ld: main.c:(.text+0x1ca): undefined reference to `sin'
/usr/bin/ld: main.c:(.text+0x222): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
Language: C

#include <stdio.h>
#include <math.h>

int main(void){
  int A,B,H,M;
  scanf("%d %d %d %d",&A,&B,&H,&M);
  
  double the = 30 * H - 6 * M;
  
  if(-180.0 <= the && the <= 180){
    printf("%lf",sqrt(A^2 + B^2 - 2 * A * B * cos(the)));
  }else{
    printf("%lf",sqrt(A^2 + B^2 - 2 * A * B * cos(fabs(the))));
  }
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:11:30: error: invalid operands to binary ^ (have 'int' and 'double')
   11 |     printf("%lf",sqrt(A^2 + B^2 - 2 * A * B * cos(the)));
      |                       ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
      |                        |        |
      |                        int      double
main.c:13:30: error: invalid operands to binary ^ (have 'int' and 'double')
   13 |     printf("%lf",sqrt(A^2 + B^2 - 2 * A * B * cos(fabs(the))));
      |                       ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                        |        |
      |                        int      double
Language: C

#include <algorithm>
#include <cassert>
#include <climits>
#include <cstdio>
#include <deque>
#include <iostream>
#include <map>
#include <queue>
#include <set>
#include <string>
#include <unordered_map>
#include <utility>
#include <vector>

using namespace std;

const int INF = 1e9;
const long long LINF = 1e18;

const double PI = 3.14159265359;

int main() {
    int A, B, H, M;
    cin >> A >> B >> H >> M;

    double aTheta = 2.0 * PI * (static_cast<double>(H * 60 + M) / (12.0 * 60.0));
    double bTheta = 2.0 * PI * (static_cast<double>(M) / 60.0);
    // cout << cos(aTheta) << ", " << sin(aTheta) << endl;
    // cout << cos(bTheta) << ", " << sin(bTheta) << endl;
    double x = static_cast<double>(A) * cos(aTheta) - static_cast<double>(B) * cos(bTheta);
    double y = static_cast<double>(A) * sin(aTheta) - static_cast<double>(B) * sin(bTheta);
    // cout << x << endl;
    // cout << y << endl;
    double pq2 = x * x + y * y;

    printf("%.10f\n", sqrt(pq2));
    // cout << sqrt(pq2) << endl;
    return 0;
}


Compiler output:
main.c:1:10: fatal error: algorithm: No such file or directory
    1 | #include <algorithm>
      |          ^~~~~~~~~~~
compilation terminated.
Language: C++

include <bits/stdc++.h>
using namespace std;

int main() {
  int A, B, H, M, C, D;
  cin >> A >> B >> H >> M;
  D = (H + H * M / 60.0) - M;
  int E = cos(D);
  C * C = A * A + B * B - E * 2 * A * B;
  cout << C << endl;
}

Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include <bits/stdc++.h>
      | ^~~~~~~
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope
    6 |   cin >> A >> B >> H >> M;
      |   ^~~
a.cc:8:11: error: 'cos' was not declared in this scope; did you mean 'const'?
    8 |   int E = cos(D);
      |           ^~~
      |           const
a.cc:9:5: error: lvalue required as left operand of assignment
    9 |   C * C = A * A + B * B - E * 2 * A * B;
      |   ~~^~~
a.cc:10:3: error: 'cout' was not declared in this scope
   10 |   cout << C << endl;
      |   ^~~~
a.cc:10:16: error: 'endl' was not declared in this scope
   10 |   cout << C << endl;
      |                ^~~~
Language: C++

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
int mod=1e9+7;
const int N=2e5+100;
const double pi=acos(-1.0);

int main()
{
   double a,b,h,m;
   scanf("%lf%lf%lf%lf",&a,&b,&h,&m);
   h*=5;
   long double k=fbs(h-m);
   long double kk=m*1.0/60*5;
   k+=kk;
   k=min(k,60-k)*6;
  // cout<<k<<endl;
   long double hd=k*1.0/180*pi;
   long double ans=a*a*1.0+b*b*1.0-2.0*a*b*cos(hd);
   printf("%.20lf\n",sqrt(ans));
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:18: error: 'fbs' was not declared in this scope; did you mean 'ffs'?
   14 |    long double k=fbs(h-m);
      |                  ^~~
      |                  ffs
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a,b,H,M,pi;
  cin >> a >> b >> H >> M ;
  pi=3.141592653589793;
  
  double h,m;
  h=H*pi/6 + M*pi/360;
  m=M*pi/30;
  
  double c;
  if(m>h)c=m-h;
  else c=h-m;
  
  
  double x;
  x*x=a*a+b*b-(2*a*b*cos(c));
  
  cout << x <<endl;
  
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:4: error: lvalue required as left operand of assignment
   19 |   x*x=a*a+b*b-(2*a*b*cos(c));
      |   ~^~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int A;
  int B;
  int H;
  int M;
  cin>>A>>B>>H>>M;
  double kaku=3.14159265358979323846*(11M-60H)/360;
  double kosain=cos(kaku);
  nagasa=A*A+B*B-2*A*B*kosain;
  cout<<nagasa<<endl;
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:39: error: unable to find numeric literal operator 'operator""M'
   10 |   double kaku=3.14159265358979323846*(11M-60H)/360;
      |                                       ^~~
a.cc:10:43: error: unable to find numeric literal operator 'operator""H'
   10 |   double kaku=3.14159265358979323846*(11M-60H)/360;
      |                                           ^~~
a.cc:12:3: error: 'nagasa' was not declared in this scope
   12 |   nagasa=A*A+B*B-2*A*B*kosain;
      |   ^~~~~~
Language: C++

//I am so vegetable
#pragma GCC optimize(2)
#include <bits/stdc++.h>
#define FIO ios::sync_with_stdio(false), cin.tie(0), cout.tie(0)
#define PB push_back
#define IN insert
#define ER erase
#define CT count
#define EP empty
#define _for(i,a,b) for(int i = (a);i<(b);++i)
#define _rfor(i,a,b) for(int i = (a);i>(b);--i)
#define _sfor(p,st) for(auto &p:st)
using namespace std;
typedef long long ll;
const int INF = 0x3f3f3f3f;
const int MOD = 1e9+7;
const double eps = 1e-6;
const double pi = 3.141593;
int gcd(int a, int b) { return b == 0 ? a : gcd(b, a % b); }
ll qpow(ll x, ll y) { ll ans = 1; for (; y > 0; y >>= 1) { if (y & 1)ans *= x; x *= x; }return ans; }
ll qpow(ll x, ll y, int MOD) { ll ans = 1; for (; y > 0; y >>= 1) { if (y & 1)ans = ans*x%MOD; x = x*x%MOD; }return ans; }
void exgcd(ll a,ll b,ll &x,ll &y){
    if(!b){x=1;y=0;return;}
    exgcd(b,a%b,x,y);
    ll X=x;
    x=y; y=X-a/b*y;
}
ll inv(ll x, int mod = MOD) { return qpow(x, mod - 2) % mod; }
ll m_m(ll a){ return (a%MOD+MOD)%MOD; }

int main() {
	//ofstream cout("E:\\acm dream\\out.txt",ios::out);
	FIO;
	double a,b;cin>>a>>b;
    int h,m;cin>>h>>m;
    double ans;
    double hd = h/12.0*2*pi;
    double md = m/60.0*2*pi;
    double d = fabs(hd-md);
    if(d>pi)d = 2*pi-d);
    ans = sqrt(a*a+b*b-2*a*b*cos(d));
    cout<<fixed<<setprecision(10)<<ans;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:40:23: error: expected ';' before ')' token
   40 |     if(d>pi)d = 2*pi-d);
      |                       ^
      |                       ;
Language: C

#include <stdio.h>
#include <unistd.h>
#include <math.h>
#define PI　3.14159265359
#define MAX(a, b) ((a) > (b) ? (a) : (b))
int main(void){
    double ans, a, b, h, m;
    scanf("%lf %lf %lf %lf", &a, &b, &h, &m);
    ans = sqrt(a * a + b * b - 2 * a * b * cos(2 * PI * ((h + m / 60)/ 12 - m / 60)));
    printf("%lf", ans);
    return (0);
}


Compiler output:
main.c:4:9: warning: ISO C99 requires whitespace after the macro name
    4 | #define PI　3.14159265359
      |         ^~
main.c: In function 'main':
main.c:4:11: error: stray '\343' in program
    4 | #define PI<U+3000>3.14159265359
      |           ^~~~~~~~
main.c:9:52: note: in expansion of macro 'PI'
    9 |     ans = sqrt(a * a + b * b - 2 * a * b * cos(2 * PI * ((h + m / 60)/ 12 - m / 60)));
      |                                                    ^~
Language: C++

#include <algorithm>
#include <string.h>
#include <iostream>
#include <stdio.h>
#include <string>

using namespace std;

typedef long long ll;
typedef double db;
ll a, b, h, m;

int main() {
	cin >> a >> b >> h >> m;

	db xs = 0.5 * (h * 60 + m);
	db xf = 6 * m;
	db x = xs - xf;

	db pi = acos(-1);
	printf("%.12lf", sqrt(a * a + b * b - 2 * a * b * cos(pi / 180 * x)));

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:17: error: 'acos' was not declared in this scope
   20 |         db pi = acos(-1);
      |                 ^~~~
a.cc:21:59: error: 'cos' was not declared in this scope
   21 |         printf("%.12lf", sqrt(a * a + b * b - 2 * a * b * cos(pi / 180 * x)));
      |                                                           ^~~
a.cc:21:26: error: 'sqrt' was not declared in this scope
   21 |         printf("%.12lf", sqrt(a * a + b * b - 2 * a * b * cos(pi / 180 * x)));
      |                          ^~~~
Language: C++

#include <bits/stdc++.h>
#include<cmath>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define _USE_MATH_DEFINES


int main() {
  int A,B,H,M;
  cin >> A >> B >> H >> M;
  
  int C;
  C = 2*M_PI/12;
  int D;
  D = 2*M_PI/60;
    
  cout << (A^2+B^2-2*A*B*cos((H*C+M*D/12)-M*D))^1.0/2.0 <<endl;
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:17: error: invalid operands of types 'int' and '__gnu_cxx::__enable_if<true, double>::__type' {aka 'double'} to binary 'operator^'
   17 |   cout << (A^2+B^2-2*A*B*cos((H*C+M*D/12)-M*D))^1.0/2.0 <<endl;
      |            ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |             |     |
      |             int   __gnu_cxx::__enable_if<true, double>::__type {aka double}
a.cc:17:57: error: invalid operands of types 'double' and '<unresolved overloaded function type>' to binary 'operator<<'
   17 |   cout << (A^2+B^2-2*A*B*cos((H*C+M*D/12)-M*D))^1.0/2.0 <<endl;
      |                                                 ~~~~~~~~^~~~~~
Language: C++

#include <bits/stdc++.h>
#include<cmath>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define _USE_MATH_DEFINES


int main() {
  int A,B,H,M;
  cin >> A >> B >> H >> M;
  
  int C;
  C = 2*M_PI/12;
  int D;
  D = 2*M_PI/60
    
  cout << (A^2+B^2-2*A*B*cos((H*C+M*D/12)-M*D))^1.0/2.0
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:16: error: expected ';' before 'cout'
   15 |   D = 2*M_PI/60
      |                ^
      |                ;
   16 | 
   17 |   cout << (A^2+B^2-2*A*B*cos((H*C+M*D/12)-M*D))^1.0/2.0
      |   ~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a,b,H,M,pi;
  cin >> a >> b >> H >> M ;
  pi=3.141592653589793;
  
  double h,m;
  h=H*pi/6 + M*pi/360;
  m=M*pi/30;
  
  double c;
  if(m>h)c=m-h;
  else c=h-m;
  
  
  double x;
  x*x=a*a+b*b-2*a*b*cos(c);
  
  cout << x <<endl;
  
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:4: error: lvalue required as left operand of assignment
   19 |   x*x=a*a+b*b-2*a*b*cos(c);
      |   ~^~
Language: C++

import math

def get_cos(m, h):
  a_deg = h*30 + m/2
  b_deg = m*6
  deg = min(abs(a_deg - b_deg), abs(360 - a_deg + b_deg))
   cos = math.cos(math.radians(deg))
  
  return cos

if __name__ == '__main__':
  a, b, h ,m = map(int,input().split())
  print(math.sqrt(a*a + b*b - 2*a*b*get_cos(m, h)))

Compiler output:
a.cc:11:16: warning: multi-character literal with 8 characters exceeds 'int' size of 4 bytes
   11 | if __name__ == '__main__':
      |                ^~~~~~~~~~
a.cc:1:1: error: 'import' does not name a type
    1 | import math
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
Language: C++

#include<iostream>
using namespace std;
#define PI 3.14159265
int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);

	double a, b, h, m;
	cin >> a>>b>>h>>m;
	double dm = 360 * m / 60;
	double dh = 360 * h / 12 + (360 / 12) * (m / 60);
	double dd = abs(dm - dh);
	//cout << dd << " \n";
	if (dd > 180){
		dd = 360-dd;
	}
	double ans = sqrt(a*a + b*b - 2 * a*b*cos(dd * PI / 180.0));



	cout <<ans;

	//system("pause");
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:47: error: 'cos' was not declared in this scope
   17 |         double ans = sqrt(a*a + b*b - 2 * a*b*cos(dd * PI / 180.0));
      |                                               ^~~
a.cc:17:22: error: 'sqrt' was not declared in this scope
   17 |         double ans = sqrt(a*a + b*b - 2 * a*b*cos(dd * PI / 180.0));
      |                      ^~~~
Language: C++

#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <queue>
#include <math.h>
#include <tuple>

#include <set>
#include <unordered_map>
#include <stack>
#include <map>

using namespace std;

#define rep(i,n) for(int (i)=0;(i)<(n);(i)++)
#define all(x) (x).begin(),(x).end()
using ll = long long;
template<class T>bool chmaxj(T &a, const T &b) { if (a < b) { a = b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b < a) { a = b; return 1; } return 0; }
void YesNo(bool y) { cout << (y ? "Yes" : "No") << endl; } //true==yes


#define INF 21474836

//////////////////////////////////////////////////////////////
double M_PI = 3.141592653589793;

int main() {

	int A, B, H, M;

	cin >> A >> B >> H >> M;

	double h_angle = (H * 60 + M) / (12.f*60.f);
	double m_angle = M / 60.f;

	double s_angle = h_angle - m_angle + 1;
	if (s_angle > 1)s_angle--;

	double ans = A * A + B * B - 2.f*A*B*cos(M_PI * 2.f * s_angle);

	printf("%.9f", sqrt(ans));

	return 0;
}


Compiler output:
In file included from /usr/include/c++/14/cmath:47,
                 from /usr/include/c++/14/math.h:36,
                 from a.cc:6:
a.cc:27:8: error: expected unqualified-id before numeric constant
   27 | double M_PI = 3.141592653589793;
      |        ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){double A,B,H,M,X;
           cin>>A>>B>>H>>M;
  X=cos((H/12-M*11/720)*3.14159265358979)
    cout<<X<<endl;}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:42: error: expected ';' before 'cout'
    5 |   X=cos((H/12-M*11/720)*3.14159265358979)
      |                                          ^
      |                                          ;
    6 |     cout<<X<<endl;}
      |     ~~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){double A,B,H,M,X;
           cin>>A>>B>>H>>M;
  X=cos((H/12-M*11/720)*pi)
    cout<<X<<endl;

Compiler output:
a.cc: In function 'int main()':
a.cc:5:25: error: 'pi' was not declared in this scope
    5 |   X=cos((H/12-M*11/720)*pi)
      |                         ^~
a.cc:6:19: error: expected '}' at end of input
    6 |     cout<<X<<endl;
      |                   ^
a.cc:3:11: note: to match this '{'
    3 | int main(){double A,B,H,M,X;
      |           ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define IOS ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define int long long
#define ff first
#define ss second
long double pi = 3.14159265359 
const int N=2e5+5;
const int mod=1e9+7;
 
int binpow(int a, int b) {
    int res = 1;
    while (b > 0) {
        if (b & 1LL)
            res = res * a;
        a = a * a;
        b >>= 1LL;
    }
    return res;
}
 
int32_t main()
{
    IOS;
    
    long double a,b,c;
    cin>>a>>b;
    long double hh,mm,x;
    cin>>hh>>mm;
    x=abs(((60.0*hh)-(11.0*mm))/2.0);
    x*=pi;
    x/=180.0;
    c=(a*a) + (b*b) - (2.0*a*b*cos(x));
    c=sqrtl(c);
    cout<<fixed<<setprecision(12)<<c;
}


Compiler output:
a.cc:8:1: error: expected ',' or ';' before 'const'
    8 | const int N=2e5+5;
      | ^~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a,b,H,M;
  cin >> a >> b >> H >> M ;
  
  double h,m;
  h=H*pi/6 + M*pi/360;
  m=M*pi/30;
  
  double c;
  if(m>h)c=m-h;
  else c=h-m;
  
  
  
  double x;
  x*x=a*a+b*b-2*a*b*cos(c);
  
  cout << x <<endl;
  
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:7: error: 'pi' was not declared in this scope
    9 |   h=H*pi/6 + M*pi/360;
      |       ^~
a.cc:19:4: error: lvalue required as left operand of assignment
   19 |   x*x=a*a+b*b-2*a*b*cos(c);
      |   ~^~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)


int main() {
  int A,B,H,M;
  cin >> A >> B >> H >> M;
  
  int C;
  C = 2pi/12;
  int D;
  D = 2pi/60
    
  cout << (A^2+B^2-2*A*B*cos((H*C+M*D/12)-M*D))^1.0/2.0
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:7: error: unable to find numeric literal operator 'operator""pi'
   11 |   C = 2pi/12;
      |       ^~~
a.cc:13:7: error: unable to find numeric literal operator 'operator""pi'
   13 |   D = 2pi/60
      |       ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rep2(i, s, n) for (int i = (s); i < (int)(n); i++)

int main() {
    int A,B,H,M;
    cin>>A>>B>>H>>M;
    float A2=A*A;
    float B2=B*B;
    const float PI = acos(-1);
    float angle=(5*H-M)PI/30;

    float c=sqrt(A2+B2-2*A*Bcos(angle));
    cout<<c<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:24: error: expected ',' or ';' before 'PI'
   12 |     float angle=(5*H-M)PI/30;
      |                        ^~
a.cc:14:28: error: 'Bcos' was not declared in this scope; did you mean 'cos'?
   14 |     float c=sqrt(A2+B2-2*A*Bcos(angle));
      |                            ^~~~
      |                            cos
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  double A,B,H,M,x1,x2,y1,y2;
  cin >> A >> B >> H >> M;
  x1=A*cos(H/12);
  x2=B*cos(M/60);
  y1=A*cos(H/12);
  y2=B*cos(M/60);
  cout << ((x1-x2)^2+(y1-y2)^2)^0.5 << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:19: error: invalid operands of types 'double' and 'double' to binary 'operator^'
   11 |   cout << ((x1-x2)^2+(y1-y2)^2)^0.5 << endl;
      |            ~~~~~~~^~~~~~~~~~
      |               |     |
      |               |     double
      |               double
a.cc:11:37: error: invalid operands of types 'double' and '<unresolved overloaded function type>' to binary 'operator<<'
   11 |   cout << ((x1-x2)^2+(y1-y2)^2)^0.5 << endl;
      |                                 ~~~~^~~~~~~
Language: C++

#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp> 
#include <ext/pb_ds/tree_policy.hpp>
#define ll long long int
#define pb push_back
#define fi first
#define se second
#define all(x) x.begin(),x.end()
#define mem(x,y) memset(x,y,sizeof(x))//memset only use to initialize 0 or -1 no other number.
#define pii pair<int,int>
#define pll pair<ll,ll>
#define INF 10e9
#define INFL 10e18;
#define mod 1000000007
//#define mod 998244353
#define fast ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
using namespace std;
using namespace __gnu_pbds; 
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> os;
typedef tree<pii,null_type,less<pii>,rb_tree_tag,tree_order_statistics_node_update> os_pair;

ll power(ll x,ll n){ll res =1;while(n>0){if(n%2==1){res=res*x;}x=x*x;n=n/2;}return res;}
ll powm(ll a,ll b) {ll res=1;a%=mod; assert(b>=0); for(;b;b>>=1){if(b&1)res=res*a%mod;a=a*a%mod;}return res;}
ll modinv(ll a){
	return powm(a,mod-2)%mod;
}
//cout<< fixed << setprecision(10)

int main(){

    fast;
    int t;
    t=1;
    //cin>>t;
    while(t--)
    {
        float a,b,h,m;
        cin>>a>>b>>h>>m;
        float p=3.141592653589793238;
        float y=(60*h+m)/2.0;
         y=abs(6.0*m-y);
        float ans=a*a*1.0+b*b*1.0-2*a*b*(1.0)*abs(cos((y*p)/180.0));
        ans=sqrt(ans);
        cout<< fixed << setprecision(10)
        cout<<ans;
        
	}

}

Compiler output:
a.cc: In function 'int main()':
a.cc:44:41: error: expected ';' before 'cout'
   44 |         cout<< fixed << setprecision(10)
      |                                         ^
      |                                         ;
   45 |         cout<<ans;
      |         ~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a,b,H,M;
  cin >> a >> b >> H >> M ;
  
  double h,m;
  h=H*30+M/2;
  m=M*6;
  
  double c;
  if(m>h)c=m-h;
  else c=h-m;
  
  
  
  double x;
  x*x=a*a+b*b-2*a*b*cos(double c/360*2*pi);
  
  cout << x <<endl;
  
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:25: error: expected primary-expression before 'double'
   19 |   x*x=a*a+b*b-2*a*b*cos(double c/360*2*pi);
      |                         ^~~~~~
Language: C

#include<stdio.h>
#include<math.h>

int main(){
  int a,b,h,m,time;
  double kaku,len;
  scanf("%d%d%d%d",&a,&b,&h,&m);
  
  time=60*h+m;
  kaku=time*5.5;
  
  len=sqrt(a^2+b^2-2*a*b*cos(kaku));
  
  printf("%.10lf",len);
  
}


Compiler output:
main.c: In function 'main':
main.c:12:17: error: invalid operands to binary ^ (have 'int' and 'double')
   12 |   len=sqrt(a^2+b^2-2*a*b*cos(kaku));
      |            ~~~~~^~~~~~~~~~~~~~~~~~
      |             |     |
      |             int   double
Language: C++

#include<bits/stdc++.h>
#define fasterthanlight ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL)
#define test int T; cin>>T; while(T--)
#define endl "\n"
#define int double
#define vi vector<int>
#define pb push_back
#define mod 1000000007
#define MAX 1e9
#define MIN -1e9
using namespace std;

//author::@whohet-->Het Patel
int min(int x, int y)
{
	return (x < y) ? x : y;

}

calcAngle(int h, int m)
{
	// validate the input


	if (h == 12) h = 0;
	if (m == 60) m = 0;

	// Calculate the angles moved
	// by hour and minute hands
	// with reference to 12:00
	int hour_angle = 0.5 * (h * 60 + m);
	int minute_angle = 6 * m;

	// Find the difference between two angles
	int angle = abs(hour_angle - minute_angle);

	// Return the smaller angle of two possible angles
	angle = min(360 - angle, angle);

	return angle;
}

signed main()
{
	fasterthanlight;
	std::cout << std::fixed;
	std::cout << std::setprecision(18);
	int a, b;
	cin >> a >> b;
	int h, m;
	cin >> h >> m;
	if (m == 0)m = 60;
	int ang = calcAngle(h, m);
	int pi = 3.141592653589793238;
	ang = (ang * pi) / 180;
	//cout << pi << endl;
	//cout << ang << " ";
	//std::cout << std::fixed;
	//std::cout << std::setprecision(12);
	//cout << cos(ang) << " ";
	cout << sqrt((a * a) + (b * b) - (a * b * 2 * cos(ang)));


	//cout << "\n\n"<<"Time elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " seconds.\n";
	return 0;
}



Compiler output:
a.cc:20:1: error: ISO C++ forbids declaration of 'calcAngle' with no type [-fpermissive]
   20 | calcAngle(int h, int m)
      | ^~~~~~~~~
Language: C

#include<stdio.h>
#include<math.h>

int main(){
  int A,B,H,M,time;
  double kaku,len;
  scanf("%d%d%d%d",&a,&b,&h,&m);
  
  time=60*h+m;
  kaku=time*5.5;
  
  len=sqrt(a^2+b^2-2*a*b*cos(kaku));
  
  printf("%.10lf",len);
  
}

Compiler output:
main.c: In function 'main':
main.c:7:21: error: 'a' undeclared (first use in this function)
    7 |   scanf("%d%d%d%d",&a,&b,&h,&m);
      |                     ^
main.c:7:21: note: each undeclared identifier is reported only once for each function it appears in
main.c:7:24: error: 'b' undeclared (first use in this function)
    7 |   scanf("%d%d%d%d",&a,&b,&h,&m);
      |                        ^
main.c:7:27: error: 'h' undeclared (first use in this function)
    7 |   scanf("%d%d%d%d",&a,&b,&h,&m);
      |                           ^
main.c:7:30: error: 'm' undeclared (first use in this function)
    7 |   scanf("%d%d%d%d",&a,&b,&h,&m);
      |                              ^
Language: C++

#include <iostream>
#include <cmath>
#include <iomanip>
using namespace std;

double a, b, h, m, s, t, d;
const double p = acos(-1);

int main()
{
	cin >> a >> b >> h >> m;

	s = (h * 30 + m * 0.5) / 180 * p;
	t = m / 30 * p;
	d = sqrt(a * a + b * b - 2 * a * b * cos(s - t));

	cout << setiosflags(ios::fixed||ios::showpoint) << setprecision(14)
	     << d << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:39: error: cannot convert 'bool' to 'std::ios_base::fmtflags'
   17 |         cout << setiosflags(ios::fixed||ios::showpoint) << setprecision(14)
      |                             ~~~~~~~~~~^~~~~~~~~~~~~~~~
      |                                       |
      |                                       bool
In file included from a.cc:3:
/usr/include/c++/14/iomanip:101:34: note:   initializing argument 1 of 'std::_Setiosflags std::setiosflags(ios_base::fmtflags)'
  101 |   setiosflags(ios_base::fmtflags __mask)
      |               ~~~~~~~~~~~~~~~~~~~^~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a,b,H,M;
  cin >> a >> b >> H >> M ;
  
  double h,m;
  h=H*30+M/2;
  m=M*6;
  
  double c;
  if(m>h)c=m-h;
  else c=h-m;
  
  
  
  double x;
  x*x=a*a+b*b-2*a*b*cos(double c);
  
  cout << x <<endl;
  
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:25: error: expected primary-expression before 'double'
   19 |   x*x=a*a+b*b-2*a*b*cos(double c);
      |                         ^~~~~~
Language: C++

#include<stdio.h>
#include<string.h>
#include<math.h>

int main(void){

	double a,b;
	double h,m;
	double ax,ay;
	double bx,by;
	double ret;
	double M_PI = 3.141592653589793;

	scanf("%lf %lf %lf %lf",&a,&b,&h,&m);


	ax = sin( h * 30 / 360 * 2 * M_PI) * a;
	ay = cos( h * 30 / 360 * 2 * M_PI) * a;
	bx = sin( m *  6 / 360 * 2 * M_PI) * b;
	by = cos( m *  6 / 360 * 2 * M_PI) * b;

	ret = sqrt((ax - bx)*(ax - bx) + (ay - by) *(ay - by));

	printf("%10.10lf\n",ret);




	
	return 0;
}

Compiler output:
In file included from /usr/include/c++/14/cmath:47,
                 from /usr/include/c++/14/math.h:36,
                 from a.cc:3:
a.cc: In function 'int main()':
a.cc:12:16: error: expected unqualified-id before numeric constant
   12 |         double M_PI = 3.141592653589793;
      |                ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)


int main() {
  int A,B,H,M
  cin >> A >> B >> H >> M;
  
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: expected initializer before 'cin'
    8 |   cin >> A >> B >> H >> M;
      |   ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a,b,H,M;
  cin >> a >> b >> H >> M ;
  
  double h,m;
  h=H*30+M/2;
  m=M*6;
  
  double c;
  if(m>h)c=m-h;
  else c=h-m;
  
  
  
  double x;
  x*x=a*a+b*b-2*a*b*cos(c);
  
  cout << x <<endl;
  
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:4: error: lvalue required as left operand of assignment
   19 |   x*x=a*a+b*b-2*a*b*cos(c);
      |   ~^~
Language: Java

public class Main {
    public static void main(String[] args) {
        //コード
    	Scanner sc = new Scanner(System.in);
//    	File file = new File("src/in.txt");
//    	Scanner sc = new Scanner(file);

    	int A = sc.nextInt();
    	int B = sc.nextInt();
    	int H = sc.nextInt();
    	int M = sc.nextInt();

    	double radM = (double) (M*6.0);
    	double radH = (double) ((H*60+M)*0.5);

    	double rad = Math.abs(radM-radH);

    	double ans = Math.sqrt(A*A+B*B-2*A*B*Math.cos(rad/180*Math.PI));

    	System.out.println(ans);

    }
}

Compiler output:
Main.java:4: error: cannot find symbol
    	Scanner sc = new Scanner(System.in);
    	^
  symbol:   class Scanner
  location: class Main
Main.java:4: error: cannot find symbol
    	Scanner sc = new Scanner(System.in);
    	                 ^
  symbol:   class Scanner
  location: class Main
2 errors
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a,b,h,m;
  cin >> a >> b >> H >> M ;
  
  double h,m;
  h=H*30+M/2;
  m=M*6;
  
  double c;
  if(m>h)c=m-h;
  else c=h-m;
  
  
  
  double x;
  x*x=a*a+b*b-2*a*b*cos(c);
  
  cout << x <<endl;
  
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:20: error: 'H' was not declared in this scope
    6 |   cin >> a >> b >> H >> M ;
      |                    ^
a.cc:6:25: error: 'M' was not declared in this scope
    6 |   cin >> a >> b >> H >> M ;
      |                         ^
a.cc:8:10: error: conflicting declaration 'double h'
    8 |   double h,m;
      |          ^
a.cc:5:11: note: previous declaration as 'int h'
    5 |   int a,b,h,m;
      |           ^
a.cc:8:12: error: conflicting declaration 'double m'
    8 |   double h,m;
      |            ^
a.cc:5:13: note: previous declaration as 'int m'
    5 |   int a,b,h,m;
      |             ^
a.cc:19:4: error: lvalue required as left operand of assignment
   19 |   x*x=a*a+b*b-2*a*b*cos(c);
      |   ~^~
Language: C++

#include<bits/stdc++.h>
using namespace std;

const double pi = acos(-1)
int main()
{
	double a, b, h, m;
  	cin >> a >> b >> h >> m;
  	cout << sqrt(a * a + b * b - 2 * a * b * cos((pi/180)*abs(6*m - (30*h+0.5*m)))) << endl;
}


Compiler output:
a.cc:5:1: error: expected ',' or ';' before 'int'
    5 | int main()
      | ^~~
Language: Java

import java.util.Scanner;

public class MainC {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);

		// 整数の入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		int h = sc.nextInt();
		int m = sc.nextInt();
		
		double theta = Math.abs(h * 30 - m*6);
		
		//System.out.println(theta);
		
		double c = a*a + b*b - 2*a*b*Math.cos(Math.toRadians(theta));
		System.out.println(Math.sqrt(c));
		
        sc.close();
	}
}

Compiler output:
Main.java:3: error: class MainC is public, should be declared in a file named MainC.java
public class MainC {
       ^
1 error
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a,b,h,m;
  cin >> a >> b >> H >> M ;
  
  double h,m;
  h=H*30+M/2;
  m=m*6;
  
  double c;
  if(m>h)c=m-h;
  else c=h-m;
  
  
  
  double x;
  x*x=a*a+b*b-2*a*b*cos(c);
  
  cout << x <<endl;
  
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:20: error: 'H' was not declared in this scope
    6 |   cin >> a >> b >> H >> M ;
      |                    ^
a.cc:6:25: error: 'M' was not declared in this scope
    6 |   cin >> a >> b >> H >> M ;
      |                         ^
a.cc:8:10: error: conflicting declaration 'double h'
    8 |   double h,m;
      |          ^
a.cc:5:11: note: previous declaration as 'int h'
    5 |   int a,b,h,m;
      |           ^
a.cc:8:12: error: conflicting declaration 'double m'
    8 |   double h,m;
      |            ^
a.cc:5:13: note: previous declaration as 'int m'
    5 |   int a,b,h,m;
      |             ^
a.cc:19:4: error: lvalue required as left operand of assignment
   19 |   x*x=a*a+b*b-2*a*b*cos(c);
      |   ~^~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define puts(i) cout<<i<<endl
#define pi 3.14159265358979323846264338
using ll = long long;
using P = pair<int,int>;

ll divisor=998244353;
int main(){
	double a,b,h,m;
	cin>>a>>b>>h>>m;
	double ans=sqrt(a*a+b*b-2*a*b*cos(pi*(h/6+*m/360-m/30)));
	cout<<setprecison(20)<<ans<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:51: error: invalid type argument of unary '*' (have 'double')
   13 |         double ans=sqrt(a*a+b*b-2*a*b*cos(pi*(h/6+*m/360-m/30)));
      |                                                   ^~
a.cc:14:15: error: 'setprecison' was not declared in this scope
   14 |         cout<<setprecison(20)<<ans<<endl;
      |               ^~~~~~~~~~~
Language: C++

import math
a,b,h,m=map(int,input().split())
k=360*(h*60+m)/720
n=360*m/60
rad=m-n
ans=(a**2+b**2-2*a*b*math.cos(2*math.pi*abs(k-n)/360))**0.5
print(str(ans)+"\n")

Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import math
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
Language: C++

#include <iostream>
#include <string>
#include <cmath>
using namespace std;

int main() {
    static const double pi = 3.141592653589793;
    int A, B;
    int H, M;
    cin >> A >> B >> H >> M;
    double thetah = pi * H / 6.0;
    double thetam = pi * M / 30.0;
    double theta = thetam - thetah;
  	double dist = A * A + B * B - 2.0 * A * B * cos(theta);
  	dist = math.sqrt(dist);
    cout << dist;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:16: error: 'math' was not declared in this scope
   15 |         dist = math.sqrt(dist);
      |                ^~~~
Language: C++

#include <iostream>
#include <algorithm>
#include <iomanip>

using namespace std;


double pi = 3.141592653532384626;

int main()
{
    int a, b, h, m;
    double kakudo;
    cin >> a >> b >> h >> m;

    kakudo = min(abs(double(6 * m) - (double((h % 12) * 30) + (double)m * 0.5)), 360 - abs(double(6 * m) - (double((h % 12) * 30) + (double)m * 0.5)));


    double answer = double(a * a) + double(b * b) - 2 * double(a) * double(b) * cos(kakudo * pi / 180);

    cout << setprecision(11) << sqrt(answer) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:81: error: 'cos' was not declared in this scope
   19 |     double answer = double(a * a) + double(b * b) - 2 * double(a) * double(b) * cos(kakudo * pi / 180);
      |                                                                                 ^~~
a.cc:21:33: error: 'sqrt' was not declared in this scope
   21 |     cout << setprecision(11) << sqrt(answer) << endl;
      |                                 ^~~~
Language: C++

#include"bits/stdc++.h"
using namespace std;
#define Rep(i, n) for (int i = 0; i < (int)(n); i++)
#define BitRep(i, n) for (int i = 0; i < (int)(1 << n); i++)
#define Sum(vec) accumulate(vec.begin(), vec.end(), 0)
#define Sort(vec) sort(vec.begin(), vec.end())
#define Reverse(vec) reverse(vec.begin(), vec.end())

int main() {
	int A, B, H, M;
	cin >> A >> B >> H >> M;
	int minuit = 60 * H + M;
	double theta = min(abs(minuit * 0.5 - M * 6), 360 - abs(minuit * 0.5 - M * 6)) / 180 * _Pi;
	printf("%.9lf\n", sqrt(A * A + B * B - 2 * A * B * cos(theta)));
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:96: error: '_Pi' was not declared in this scope
   13 |         double theta = min(abs(minuit * 0.5 - M * 6), 360 - abs(minuit * 0.5 - M * 6)) / 180 * _Pi;
      |                                                                                                ^~~
Language: Java

import java.util.*;
class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int b = sc.nextInt();//1辺目
    int c = sc.nextInt();//2辺目
    int x = sc.nextInt();
    int y = sc.nextInt();
	double xr = 360*(x*60 + y) / 720;
    double yr = 360*y / 60
    
    double e = Math.max(xr-yr, yr-xr);

    double r=Math.sqrt(Math.pow(b,2)+Math.pow(c,2)-2*b*c*Math.cos(Math.toRadians(e)));

System.out.println(r);
  }

}

Compiler output:
Main.java:10: error: ';' expected
    double yr = 360*y / 60
                          ^
1 error
Language: C++

/*dismint|jjc*/
#include <bits/stdc++.h>
using namespace std;
#define forl(V, S, E) for(int V = S; V < E; V++)
#define ford(V, S, E) for(int V = S; V >= E; V--)
#define fore(E, X) for(auto &E:X)
#define println(X) cout << X << endl
#define printe(X) for(auto &E:X) cout << E << " "; cout << endl
typedef unordered_map<int, unordered_set<int>> graph;
typedef long long ll;

int main() {
	ios_base::sync_with_stdio(false); cin.tie(NULL);
	double a, b, h, m; cin >> a >> b >> h >> m;
	m += 60*h;
	double a1 = (m/720.0)*360.0, a2 = (m/60.0)*360.0;
	double diff = fmod(a2-a1, 360);
	println(diff);
	const double M_PI = 3.141592653589793;
	double ans = sqrt((a*a+b*b)-2*a*b*cos(diff*M_PI/180.0));
	cout << setprecision(100) << ans << endl;
}


Compiler output:
In file included from /usr/include/c++/14/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:114,
                 from a.cc:2:
a.cc: In function 'int main()':
a.cc:19:22: error: expected unqualified-id before numeric constant
   19 |         const double M_PI = 3.141592653589793;
      |                      ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;

int main()
{
	double a, b, h, m;
  	cin >> a >> b >> h >> m;
  	cout << sqrt(a * a + b * b - 2 * a * b * cos((pi/180)*abs(6*m - (30*h+0.5*m)))) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:55: error: 'pi' was not declared in this scope
    8 |         cout << sqrt(a * a + b * b - 2 * a * b * cos((pi/180)*abs(6*m - (30*h+0.5*m)))) << endl;
      |                                                       ^~
Language: C++

#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <stack>
#include <queue>
#include <set>
#include <map>
#include <iomanip>
using namespace std;
//typedef __int64 LL;
//typedef long long int LL;
typedef vector<int> ivec;
typedef vector<string> svec;
typedef pair<int,int> P;
//typedef pair<LL,LL> PL;

const int MOD=1000000007;

void ans(bool flag)
{
	if(flag)cout<<"Yes"<<"\n";
	else cout<<"No"<<"\n";
}

int main(){
	double pi=atan(1)*4;

	double a,b,h,m;
	cin>>a>>b>>h>>m;
	double po=((h+m/60)*30-m*6)/180*pi;
	//cout<<cos(po)<<"\n";
	cout<<setprecision(15)<<sqrt(a*a+b*b-2*a*b*cos(po))<<"\n";
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:30:19: error: 'atan' was not declared in this scope
   30 |         double pi=atan(1)*4;
      |                   ^~~~
a.cc:36:52: error: 'cos' was not declared in this scope
   36 |         cout<<setprecision(15)<<sqrt(a*a+b*b-2*a*b*cos(po))<<"\n";
      |                                                    ^~~
a.cc:36:33: error: 'sqrt' was not declared in this scope
   36 |         cout<<setprecision(15)<<sqrt(a*a+b*b-2*a*b*cos(po))<<"\n";
      |                                 ^~~~
Language: C++

#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <stack>
#include <queue>
#include <set>
#include <map>
#include <iomanip>
using namespace std;
//typedef __int64 LL;
//typedef long long int LL;
typedef vector<int> ivec;
typedef vector<string> svec;
typedef pair<int,int> P;
//typedef pair<LL,LL> PL;

const int MOD=1000000007;
double pi=atan(1)*4;

void ans(bool flag)
{
	if(flag)cout<<"Yes"<<"\n";
	else cout<<"No"<<"\n";
}

int main(){
	double a,b,h,m;
	cin>>a>>b>>h>>m;
	double po=((h+m/60)*30-m*6)/180*pi;
	//cout<<cos(po)<<"\n";
	cout<<setprecision(15)<<sqrt(a*a+b*b-2*a*b*cos(po))<<"\n";
	return 0;
}

Compiler output:
a.cc:22:11: error: 'atan' was not declared in this scope
   22 | double pi=atan(1)*4;
      |           ^~~~
a.cc: In function 'int main()':
a.cc:35:52: error: 'cos' was not declared in this scope
   35 |         cout<<setprecision(15)<<sqrt(a*a+b*b-2*a*b*cos(po))<<"\n";
      |                                                    ^~~
a.cc:35:33: error: 'sqrt' was not declared in this scope
   35 |         cout<<setprecision(15)<<sqrt(a*a+b*b-2*a*b*cos(po))<<"\n";
      |                                 ^~~~