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

#include<stdio.h>
#include<math.h>
int main (void){
int A,B,H,M,t;
double cos(double x);
double C,CC;
scanf("%d,%d,%d,%d\n",&A,&B,&H,&M);
t = H * 60 + M
CC = A ** 2 + B **2 - 2*A*B*cos(11 * M_PI * t /360)
printf("%f\n",CC**(1/2))
return 0;
}

Compiler output:
main.c: In function 'main':
main.c:8:15: error: expected ';' before 'CC'
    8 | t = H * 60 + M
      |               ^
      |               ;
    9 | CC = A ** 2 + B **2 - 2*A*B*cos(11 * M_PI * t /360)
      | ~~
Language: C

#include<stdio.h>
#include<math.h>
int A,B,H,M,t;
double cos(double x);
double C,CC;
scanf("%d,%d,%d,%d",&A,&B,&H,&M);
t = H * 60 + M
CC = A ** 2 + B **2 - 2*A*B*cos(11 * M_PI * t /360)
printf("%f",CC**(1/2))

Compiler output:
main.c:6:7: error: expected declaration specifiers or '...' before string constant
    6 | scanf("%d,%d,%d,%d",&A,&B,&H,&M);
      |       ^~~~~~~~~~~~~
main.c:6:21: error: expected declaration specifiers or '...' before '&' token
    6 | scanf("%d,%d,%d,%d",&A,&B,&H,&M);
      |                     ^
main.c:6:24: error: expected declaration specifiers or '...' before '&' token
    6 | scanf("%d,%d,%d,%d",&A,&B,&H,&M);
      |                        ^
main.c:6:27: error: expected declaration specifiers or '...' before '&' token
    6 | scanf("%d,%d,%d,%d",&A,&B,&H,&M);
      |                           ^
main.c:6:30: error: expected declaration specifiers or '...' before '&' token
    6 | scanf("%d,%d,%d,%d",&A,&B,&H,&M);
      |                              ^
main.c:7:1: warning: data definition has no type or storage class
    7 | t = H * 60 + M
      | ^
main.c:7:1: error: type defaults to 'int' in declaration of 't' [-Wimplicit-int]
main.c:7:5: error: initializer element is not constant
    7 | t = H * 60 + M
      |     ^
main.c:8:1: error: expected ',' or ';' before 'CC'
    8 | CC = A ** 2 + B **2 - 2*A*B*cos(11 * M_PI * t /360)
      | ^~
Language: Java

import java.util.*;
public class colon {
    public static void main(String agrs[])
    {
        Scanner in = new Scanner(System.in);
        double a = in.nextDouble();
        double b = in.nextDouble();
        double h = in.nextDouble();
        double m = in.nextDouble();
        h *= 30;
        m *= 6;
        h += m / 12;
        if(m == 0)
        {
            m = 360.0;
        }
        if(h == 0)
        {
            h = 360.0;
        }
        double angle = Math.min(Math.abs(h - m), Math.abs(m - h));
        angle /= 180;
        angle *= Math.PI;
        double hyp = Math.pow(a, 2) + Math.pow(b, 2) - (2 * a * b * Math.cos(angle));
        hyp = Math.sqrt(hyp);
        System.out.println(hyp);
    }
}


Compiler output:
Main.java:2: error: class colon is public, should be declared in a file named colon.java
public class colon {
       ^
1 error
Language: C++

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

const int INF = 1001001001;
vector<int> to[100005];

int main() {
    int n, m;
    cin >> n, m;
    rep(i, m) {
        int a, b;
        cin >> a >> b;
        --a, --b;
        to[a].push_back(b);
        to[b].push_bakc(a);
    }

    queue<int> q;
    vector<int> dist(n, INF);
    vector<int> pre(n, -1);
    dist[0] = 0;
    q.push(0);
    while(!q.empty()) {
        int v = q.front(); q.pop();
        for (int u : to[v]) {
            if (dist[u] != INF) continue;
            dist[u] = dist[v] + 1;
            pre[u] = v;
            q.push(u);
        }
    }
    
    cout << "Yes" << endl;
    rep(i, n) {
        if(i == 0) continue;
        int ans = pre[i];
        ++ans;
        cout << ans << endl;
    }
    return 0;
}

Compiler output:
a.cc:4:12: error: 'Long' does not name a type; did you mean 'long'?
    4 | using ll = Long Ling;
      |            ^~~~
      |            long
a.cc: In function 'int main()':
a.cc:18:15: error: 'class std::vector<int>' has no member named 'push_bakc'; did you mean 'push_back'?
   18 |         to[b].push_bakc(a);
      |               ^~~~~~~~~
      |               push_back
Language: C++

double sgn(double x){
  if(x < 0){
    return -x;
  }
  else{
    return x;
  }
}

int main() {
  double A, B, H, M;
  cin >> A >> B >> H >> M;
  
  double angle_h, angle_m;
  angle_h = (30 + M / 20) * H ;
  angle_m = 6 * M;
  
  //cout << angle_h << endl;
  
  double s, angle;
  s = sgn(angle_h - angle_m);
  angle = min(s, 360 - s);
  
  //cout << angle << endl;
  
  double c;
  double c_2;
  c_2 = A * A + B * B - 2 * A * B * cos(angle * M_PI / 180);
  c = sqrt(c_2);
  
  cout << c << endl;
  
  
  

 
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:3: error: 'cin' was not declared in this scope
   12 |   cin >> A >> B >> H >> M;
      |   ^~~
a.cc:22:11: error: 'min' was not declared in this scope; did you mean 'main'?
   22 |   angle = min(s, 360 - s);
      |           ^~~
      |           main
a.cc:28:49: error: 'M_PI' was not declared in this scope
   28 |   c_2 = A * A + B * B - 2 * A * B * cos(angle * M_PI / 180);
      |                                                 ^~~~
a.cc:28:37: error: 'cos' was not declared in this scope
   28 |   c_2 = A * A + B * B - 2 * A * B * cos(angle * M_PI / 180);
      |                                     ^~~
a.cc:29:7: error: 'sqrt' was not declared in this scope
   29 |   c = sqrt(c_2);
      |       ^~~~
a.cc:31:3: error: 'cout' was not declared in this scope
   31 |   cout << c << endl;
      |   ^~~~
a.cc:31:16: error: 'endl' was not declared in this scope
   31 |   cout << c << endl;
      |                ^~~~
Language: C++


double sgn(double x){
  if(x < 0){
    return -x;
  }
  else{
    return x;
  }
}

int main() {
  double A, B, H, M;
  cin >> A >> B >> H >> M;
  
  double angle_h, angle_m;
  angle_h = (30 + M / 20) * H ;
  angle_m = 6 * M;
  
  cout << angle_h << endl;
  
  double s, angle;
  s = sgn(angle_h - angle_m);
  angle = min(s, 360 - s);
  
  cout << angle << endl;
  
  double c;
  double c_2;
  c_2 = A * A + B * B - 2 * A * B * cos(angle * M_PI / 180);
  c = sqrt(c_2);
  
  cout << c << endl;
  
  
  

 
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:3: error: 'cin' was not declared in this scope
   13 |   cin >> A >> B >> H >> M;
      |   ^~~
a.cc:19:3: error: 'cout' was not declared in this scope
   19 |   cout << angle_h << endl;
      |   ^~~~
a.cc:19:22: error: 'endl' was not declared in this scope
   19 |   cout << angle_h << endl;
      |                      ^~~~
a.cc:23:11: error: 'min' was not declared in this scope; did you mean 'main'?
   23 |   angle = min(s, 360 - s);
      |           ^~~
      |           main
a.cc:29:49: error: 'M_PI' was not declared in this scope
   29 |   c_2 = A * A + B * B - 2 * A * B * cos(angle * M_PI / 180);
      |                                                 ^~~~
a.cc:29:37: error: 'cos' was not declared in this scope
   29 |   c_2 = A * A + B * B - 2 * A * B * cos(angle * M_PI / 180);
      |                                     ^~~
a.cc:30:7: error: 'sqrt' was not declared in this scope
   30 |   c = sqrt(c_2);
      |       ^~~~
Language: C

import math

a,b,h,m = map(int,input().split())

c = (h*30)+(m*(1/2))
d = m*6

e = abs(c - d)

theta = min(360-e,e)

ans = math.sqrt(a*a + b*b - 2*a*b*math.cos(math.radians(theta)))

print(ans)

Compiler output:
main.c:1:1: error: unknown type name 'import'
    1 | import math
      | ^~~~~~
main.c:3:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'a'
    3 | a,b,h,m = map(int,input().split())
      | ^
Language: C

#include <stdio.h>
#include <math.h>
#include <stdlib.h>
 
int main(int argc, char** argv)
{
  double a = 0.0;
  double b = 0.0;
  double h = 0.0;
  double m = 0.0;
  double radh = PI / 6.0;
  double radm = PI / 30.0;
  double radhm = radh / 60.0;
  
  scanf("%lg %lg %lg %lg", &a, &b, &h, &m);
  
  double rada = h * radh + m * radhm;
  double radb = m * radm;
  double angle = rada - radb;
 
  double posA[2] = { a * cos(rada), a * sin(rada) };
  double posB[2] = { b * cos(radb), b * sin(radb) };
  
  double dx = posA[0] - posB[0];
  double dy = posA[1] - posB[1];
  double dist = sqrt(dx * dx + dy * dy);
  
  printf("f20.10", dist);
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:11:17: error: 'PI' undeclared (first use in this function)
   11 |   double radh = PI / 6.0;
      |                 ^~
main.c:11:17: note: each undeclared identifier is reported only once for each function it appears in
Language: C

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

int main(int argc, char** argv)
{
  double a = 0.0;
  double b = 0.0;
  double h = 0.0;
  double m = 0.0;
  double radh = PI / 6.0;
  double radm = PI / 30.0;
  double radhm = radh / 60.0;
  
  scanf("%g %g %g %g", &a, &b, &h, &m);
  
  double rada = h * radh + m * radhm;
  double radb = m * radm;
  double angle = rada - radb;

  double posA[2] = { a * cos(rada), a * sin(rada) };
  double posB[2] = { b * cos(radb), b * sin(radb) };
  
  double dx = posA[0] - posB[0];
  double dy = posA[1] - posB[1];
  double dist = sqrt(dx * dx + dy * dy);
  
  printf("f20.10", dist);
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:11:17: error: 'PI' undeclared (first use in this function)
   11 |   double radh = PI / 6.0;
      |                 ^~
main.c:11:17: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include<iostream>
#include<cmath>
#include<iomanip>
using namespace std;
#define PI acos(-1)
double a,b,h,m;
double alpha,beta,theta,length;
signed main(){
	cin>>a>>b>>h>>m;
	alpha=(60*h+m)/720*(2*PI);
	beta=m/60*(2*PI);
	theta=alpha-beta;
	length=sqrt(a*a+b*b-2.0*a*b*cos(theta));
	cout<<setprecision(10)<<length;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:9: error: reference to 'beta' is ambiguous
   11 |         beta=m/60*(2*PI);
      |         ^~~~
In file included from /usr/include/c++/14/cmath:3906,
                 from a.cc:2:
/usr/include/c++/14/bits/specfun.h:341:5: note: candidates are: 'template<class _Tpa, class _Tpb> typename __gnu_cxx::__promote_2<_Tp, _Up>::__type std::beta(_Tpa, _Tpb)'
  341 |     beta(_Tpa __a, _Tpb __b)
      |     ^~~~
a.cc:7:14: note:                 'double beta'
    7 | double alpha,beta,theta,length;
      |              ^~~~
a.cc:12:21: error: reference to 'beta' is ambiguous
   12 |         theta=alpha-beta;
      |                     ^~~~
/usr/include/c++/14/bits/specfun.h:341:5: note: candidates are: 'template<class _Tpa, class _Tpb> typename __gnu_cxx::__promote_2<_Tp, _Up>::__type std::beta(_Tpa, _Tpb)'
  341 |     beta(_Tpa __a, _Tpb __b)
      |     ^~~~
a.cc:7:14: note:                 'double beta'
    7 | double alpha,beta,theta,length;
      |              ^~~~
Language: C++

#include<cmath>
#include<cstdio>
using namespace std;
int a,b,h,m,j;
double ans,sz,fz;
int main()
{
	cin>>a>>b>>h>>m;
	sz=(60*h+m)*0.5;
	fz=6*m;
	j=abs(sz-fz);
	if(j>180)j=360-j;
	ans=cos(j*M_PI/180);
	printf("%.20f",sqrt(a*a+b*b-2*a*b*ans));
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: 'cin' was not declared in this scope
    8 |         cin>>a>>b>>h>>m;
      |         ^~~
a.cc:3:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    2 | #include<cstdio>
  +++ |+#include <iostream>
    3 | using namespace std;
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define REP(i,n) for(ll i=0; i<(ll)(n); i++)
#define FOR(i,n,m) for (ll i=n; i<(ll)(m); i++)
#define pb push_back
#define INF 1000000007LL
#define all(a) (a).begin(),(a).end()
#define chmin(a,b) a=min(a,b)
#define chmax(a,b) a=max(a,b)

typedef long long ll;
typedef pair<int,int> p;


class CColon {
public:
    int dy[4]={-1,1,0,0};
    int dx[4]={0,0,1,-1};

	void solve(std::istream& in, std::ostream& out) {
        long double A, B, H, M;
        in >> A >> B >> H >> M;
        long double degree = (M / 30.0L * M_PIl) - (H * M_PIl / 6.0L + M * M_PIl / 360.0L);
        while (degree > M_PIl) degree -= M_PIl;
        out << setprecision(64)  << sqrt(A * A + B * B - 2L * A * B * cosl(degree)) << endl;
	}
};


Compiler output:
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define REP(i,n) for(ll i=0; i<(ll)(n); i++)
#define FOR(i,n,m) for (ll i=n; i<(ll)(m); i++)
#define pb push_back
#define INF 1000000007LL
#define all(a) (a).begin(),(a).end()
#define chmin(a,b) a=min(a,b)
#define chmax(a,b) a=max(a,b)

typedef long long ll;
typedef pair<int,int> p;



class CColon {
public:
    int dy[4]={-1,1,0,0};
    int dx[4]={0,0,1,-1};

	void solve(std::istream& in, std::ostream& out) {
	    double A, B, H, M;
	    in >> A >> B >> H >> M;
        double degree = abs((H * M_PIf64 / 6.0L + M * M_PIf64 / 360.0L)  - (M / 30.0L * M_PIf64));
        while (degree > M_PIf64) degree -= M_PIf64;
        out << setprecision(64)  << sqrt(A * A + B * B - 2L * A * B * cos(degree)) << endl;
	}
};


Compiler output:
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C++

#include <iostream>
using namespace std;
    
int main() {
	int A, B, H, M;
    cin >> A >> B >> H >> M;
    int i = abs(M*6 - (H*60 + M)*2 );
    if(i > 180){
        abs(i -= 360);
    }
    int C = A*A + B*B + 2*A*B*cos(double(i)/180);
    cout << pow(C, 0.5);
} 

Compiler output:
a.cc: In function 'int main()':
a.cc:11:31: error: 'cos' was not declared in this scope
   11 |     int C = A*A + B*B + 2*A*B*cos(double(i)/180);
      |                               ^~~
a.cc:12:13: error: 'pow' was not declared in this scope
   12 |     cout << pow(C, 0.5);
      |             ^~~
Language: C++

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

int main() {
  int a, b, h, m;
  cin >> a >> b >> h >> m;
  double v1 = h*30+m*0.5;
  double v2 = m*6
  double deg = abs(v1-v2);
  double PI = acos(-1);
  double rad = deg*2*PI/360;
  double ans = a*a + b*b - 2*a*b*cos(rad);
  ans = pow(ans, 0.5);
  printf("%.10f\n", ans);
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:3: error: expected ',' or ';' before 'double'
   12 |   double deg = abs(v1-v2);
      |   ^~~~~~
a.cc:14:16: error: 'deg' was not declared in this scope
   14 |   double rad = deg*2*PI/360;
      |                ^~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
const double pi=acos(-1.0);
int main(){
   double a,b,h,m;
   cin>>a>>b>>h>>m;
   double ans=a*a+b*b-2*a*b*cos(2*M_PI*((h+m/60)/12-m/60));
   printf("%.12lf\n",sqrt(ans));
   return 0;

Compiler output:
a.cc: In function 'int main()':
a.cc:9:13: error: expected '}' at end of input
    9 |    return 0;
      |             ^
a.cc:4:11: note: to match this '{'
    4 | int main(){
      |           ^
Language: C++

#include <algorithm>
#include <cmath>
#include <iomanip>
#include <iostream>
#include <map>
#include <queue>
#include <set>
#include <string>
#include <vector>

int main(void){
    long double a, b, h, m;
    std::cin >> a >> b >> h >> m;
    long double theta = (30 * h - 5.5 * m) / 180 * 3.141592653589793238462643383279;
    std::cout << std::fixrd << std::setprecision(15) << std::sqrt((a - b) * (a - b) + 2 * a * b * (1 - std::abs(std::cos(theta)))) << std::endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:23: error: 'fixrd' is not a member of 'std'; did you mean 'fixed'?
   15 |     std::cout << std::fixrd << std::setprecision(15) << std::sqrt((a - b) * (a - b) + 2 * a * b * (1 - std::abs(std::cos(theta)))) << std::endl;
      |                       ^~~~~
      |                       fixed
Language: C++

v#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl '\n'
#define pb push_back
#define mp make_pair
#define SPEED ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define MOD 1000000007
#define INF 1e18
#define pi 3.14159265358979323846264338327950
typedef pair<int,int> pr;
signed main()
{
    SPEED;
    double a,b,h,m;
    cin>>a>>b>>h>>m;
    double ang=((h+m/60)/12-m/60)*2*pi;
    double dist=a*a+b*b-2*a*b*cosl(ang);
    cout<<fixed<<setprecision(9)<<sqrt(dist);
}
    

Compiler output:
a.cc:1:2: error: stray '#' in program
    1 | v#include <bits/stdc++.h>
      |  ^
a.cc:1:1: error: 'v' does not name a type
    1 | v#include <bits/stdc++.h>
      | ^
a.cc:11:9: error: 'pair' does not name a type; did you mean 'pi'?
   11 | typedef pair<int,int> pr;
      |         ^~~~
      |         pi
a.cc: In function 'int main()':
a.cc:7:15: error: 'ios_base' has not been declared
    7 | #define SPEED ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
      |               ^~~~~~~~
a.cc:14:5: note: in expansion of macro 'SPEED'
   14 |     SPEED;
      |     ^~~~~
a.cc:7:48: error: 'cin' was not declared in this scope
    7 | #define SPEED ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
      |                                                ^~~
a.cc:14:5: note: in expansion of macro 'SPEED'
   14 |     SPEED;
      |     ^~~~~
a.cc:7:56: error: 'NULL' was not declared in this scope
    7 | #define SPEED ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
      |                                                        ^~~~
a.cc:14:5: note: in expansion of macro 'SPEED'
   14 |     SPEED;
      |     ^~~~~
a.cc:1:1: note: 'NULL' is defined in header '<cstddef>'; this is probably fixable by adding '#include <cstddef>'
  +++ |+#include <cstddef>
    1 | v#include <bits/stdc++.h>
a.cc:7:62: error: 'cout' was not declared in this scope
    7 | #define SPEED ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
      |                                                              ^~~~
a.cc:14:5: note: in expansion of macro 'SPEED'
   14 |     SPEED;
      |     ^~~~~
a.cc:18:31: error: 'cosl' was not declared in this scope
   18 |     double dist=a*a+b*b-2*a*b*cosl(ang);
      |                               ^~~~
a.cc:19:11: error: 'fixed' was not declared in this scope
   19 |     cout<<fixed<<setprecision(9)<<sqrt(dist);
      |           ^~~~~
a.cc:19:18: error: 'setprecision' was not declared in this scope
   19 |     cout<<fixed<<setprecision(9)<<sqrt(dist);
      |                  ^~~~~~~~~~~~
a.cc:19:35: error: 'sqrt' was not declared in this scope
   19 |     cout<<fixed<<setprecision(9)<<sqrt(dist);
      |                                   ^~~~
Language: C++

#pragma GCC optimize("Ofast")
#include<stdio.h>
#include<algorithm>
using namespace std;
int main(){
	double a,b,h,m;
	scanf("%lf%lf%lf%lf",&a,&b,&h,&m);
	double deg=(h+m/60)*360/12,deg2=m*360/60,deg3=min(abs(deg-deg2),abs(360-deg)+abs(360-deg2));
	//printf("%lf %lf %lf\n",deg,deg2,deg3);
	printf("%.10lf\n",sqrt(a*a+b*b-2*a*b*cos(deg3*acos(-1)/180)));
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:55: error: 'acos' was not declared in this scope
   10 |         printf("%.10lf\n",sqrt(a*a+b*b-2*a*b*cos(deg3*acos(-1)/180)));
      |                                                       ^~~~
a.cc:10:46: error: 'cos' was not declared in this scope
   10 |         printf("%.10lf\n",sqrt(a*a+b*b-2*a*b*cos(deg3*acos(-1)/180)));
      |                                              ^~~
a.cc:10:27: error: 'sqrt' was not declared in this scope
   10 |         printf("%.10lf\n",sqrt(a*a+b*b-2*a*b*cos(deg3*acos(-1)/180)));
      |                           ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define pi 3.14159265358979323846

int main(){
  int A, B, H, M;
  cin >> A >> B >> H >> M;
  double x, r;
  r = (2 * pi * H / 12) + (2 * pi * M / (12*60)) + (2 * pi * M / 60);
  r = r % (2*pi);
  if(r > pi){
    r = 2 * pi - r;
  }
  x = sqrt(pow(A, 2) + pow(B, 2) - 2 * A * B * cos(r));
  cout << x << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:9: error: invalid operands of types 'double' and 'double' to binary 'operator%'
   10 |   r = r % (2*pi);
      |       ~ ^ ~~~~~~
      |       |     |
      |       |     double
      |       double
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define pi 3.14159265358979323846;

int main(){
  int A, B, H, M;
  cin >> A >> B >> H >> M;
  double x, r;
  r = (2 * pi * H / 12) + (2 * pi * M / (12*60)) + (2 * pi * M / 60);
  r /= (2*pi);
  if(r > pi){
    r = 2 * pi - r;
  }
  x = sqrt(pow(A, 2) + pow(B, 2) - 2 * A * B * cos(r));
  cout << x << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:3:34: error: expected ')' before ';' token
    3 | #define pi 3.14159265358979323846;
      |                                  ^
a.cc:9:12: note: in expansion of macro 'pi'
    9 |   r = (2 * pi * H / 12) + (2 * pi * M / (12*60)) + (2 * pi * M / 60);
      |            ^~
a.cc:9:7: note: to match this '('
    9 |   r = (2 * pi * H / 12) + (2 * pi * M / (12*60)) + (2 * pi * M / 60);
      |       ^
a.cc:9:15: error: invalid type argument of unary '*' (have 'int')
    9 |   r = (2 * pi * H / 12) + (2 * pi * M / (12*60)) + (2 * pi * M / 60);
      |               ^~~
a.cc:9:35: error: invalid type argument of unary '*' (have 'int')
    9 |   r = (2 * pi * H / 12) + (2 * pi * M / (12*60)) + (2 * pi * M / 60);
      |                                   ^~~
a.cc:9:60: error: invalid type argument of unary '*' (have 'int')
    9 |   r = (2 * pi * H / 12) + (2 * pi * M / (12*60)) + (2 * pi * M / 60);
      |                                                            ^~~
a.cc:3:34: error: expected ')' before ';' token
    3 | #define pi 3.14159265358979323846;
      |                                  ^
a.cc:10:11: note: in expansion of macro 'pi'
   10 |   r /= (2*pi);
      |           ^~
a.cc:10:8: note: to match this '('
   10 |   r /= (2*pi);
      |        ^
a.cc:10:13: error: expected primary-expression before ')' token
   10 |   r /= (2*pi);
      |             ^
a.cc:11:12: error: expected primary-expression before ')' token
   11 |   if(r > pi){
      |            ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define pi = 3.14159265358979323846;

int main(){
  int A, B, H, M;
  cin >> A >> B >> H >> M;
  double x, r;
  r = (2 * pi * H / 12) + (2 * pi * M / (12*60)) + (2 * pi * M / 60);
  r /= (2*pi);
  if(r > pi){
    r = 2 * pi - r;
  }
  x = sqrt(pow(A, 2) + pow(B, 2) - 2 * A * B * cos(r));
  cout << x << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:3:12: error: expected primary-expression before '=' token
    3 | #define pi = 3.14159265358979323846;
      |            ^
a.cc:9:12: note: in expansion of macro 'pi'
    9 |   r = (2 * pi * H / 12) + (2 * pi * M / (12*60)) + (2 * pi * M / 60);
      |            ^~
a.cc:3:36: error: expected ')' before ';' token
    3 | #define pi = 3.14159265358979323846;
      |                                    ^
a.cc:9:12: note: in expansion of macro 'pi'
    9 |   r = (2 * pi * H / 12) + (2 * pi * M / (12*60)) + (2 * pi * M / 60);
      |            ^~
a.cc:9:7: note: to match this '('
    9 |   r = (2 * pi * H / 12) + (2 * pi * M / (12*60)) + (2 * pi * M / 60);
      |       ^
a.cc:9:15: error: invalid type argument of unary '*' (have 'int')
    9 |   r = (2 * pi * H / 12) + (2 * pi * M / (12*60)) + (2 * pi * M / 60);
      |               ^~~
a.cc:9:35: error: invalid type argument of unary '*' (have 'int')
    9 |   r = (2 * pi * H / 12) + (2 * pi * M / (12*60)) + (2 * pi * M / 60);
      |                                   ^~~
a.cc:9:60: error: invalid type argument of unary '*' (have 'int')
    9 |   r = (2 * pi * H / 12) + (2 * pi * M / (12*60)) + (2 * pi * M / 60);
      |                                                            ^~~
a.cc:3:12: error: expected primary-expression before '=' token
    3 | #define pi = 3.14159265358979323846;
      |            ^
a.cc:10:11: note: in expansion of macro 'pi'
   10 |   r /= (2*pi);
      |           ^~
a.cc:3:36: error: expected ')' before ';' token
    3 | #define pi = 3.14159265358979323846;
      |                                    ^
a.cc:10:11: note: in expansion of macro 'pi'
   10 |   r /= (2*pi);
      |           ^~
a.cc:10:8: note: to match this '('
   10 |   r /= (2*pi);
      |        ^
a.cc:10:13: error: expected primary-expression before ')' token
   10 |   r /= (2*pi);
      |             ^
a.cc:3:12: error: expected primary-expression before '=' token
    3 | #define pi = 3.14159265358979323846;
      |            ^
a.cc:11:10: note: in expansion of macro 'pi'
   11 |   if(r > pi){
      |          ^~
a.cc:11:12: error: expected primary-expression before ')' token
   11 |   if(r > pi){
      |            ^
a.cc:3:12: error: expected primary-expression before '=' token
    3 | #define pi = 3.14159265358979323846;
      |            ^
a.cc:12:13: note: in expansion of macro 'pi'
   12 |     r = 2 * pi - r;
      |             ^~
Language: C++

#include <bits/stdc++.h>
using namespace std;
define pi = 3.14159265358979323846;

int main(){
  int A, B, H, M;
  cin >> A >> B >> H >> M;
  double x, r;
  r = (2 * pi * H / 12) + (2 * pi * M / (12*60)) + (2 * pi * M / 60);
  r /= (2*pi);
  if(r > pi){
    r = 2 * pi - r;
  }
  x = sqrt(pow(A, 2) + pow(B, 2) - 2 * A * B * cos(r));
  cout << x << endl;
  return 0;
}


Compiler output:
a.cc:3:1: error: 'define' does not name a type
    3 | define pi = 3.14159265358979323846;
      | ^~~~~~
a.cc: In function 'int main()':
a.cc:9:12: error: 'pi' was not declared in this scope
    9 |   r = (2 * pi * H / 12) + (2 * pi * M / (12*60)) + (2 * pi * M / 60);
      |            ^~
Language: C++

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

int main(){
  int A, B, H, M;
  cin >> A >> B >> H >> M;
  double x, r;
  r = (2 * pi * H / 12) + (2 * pi * M / (12*60)) + (2 * pi * M / 60);
  r /= (2*pi);
  if(r > pi){
    r = 2 * pi - r;
  }
  x = sqrt(pow(A, 2) + pow(B, 2) - 2 * A * B * cos(r));
  cout << x << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:12: error: 'pi' was not declared in this scope
    8 |   r = (2 * pi * H / 12) + (2 * pi * M / (12*60)) + (2 * pi * M / 60);
      |            ^~
Language: C++

#define pi 3.14159265358979323846

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

int main(){
    
    long double a, b, h, m;
    cin >> a >> b >> h >> m;
    //calculating deg
    long double hdeg = h*30;
    long double mdeg= m*6;
    hdeg+=mdeg/12;
    long double deg = abs(hdeg-mdeg);
    //apply law of cosines
    long double cosdeg = cos(deg* pi/180);
    long double asqr = a*a;
    long double bsqr= b*b;
    long double c = sqrt(asqr+bsqr-2*a*b*cosdeg);
    cout << fixed << showpoint;
    cout << setprecision(20);
    cout << c << endl;
    return 0;
   

Compiler output:
a.cc: In function 'int main()':
a.cc:25:14: error: expected '}' at end of input
   25 |     return 0;
      |              ^
a.cc:8:11: note: to match this '{'
    8 | int main(){
      |           ^
Language: C++

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <bits/stdc++.h>
using namespace std;
const long double pi = acos(-1);
int main()
{
//    cout << cos(0) << endl;
//    cout << cos(pi/4) << endl;
//    cout << cos(pi/2) << endl;
//    cout << cos(pi) << endl;
    double x,y;
    double h,m;
    cin >>x>>y>>h>>m;
    long double tri = min((h*60+m-m*12+720)%360,(m*12-(h*60+m)+720)%360);
    cout << fixed << setprecision(13);
    long double d = x*x+y*y-2*x*y*cos(pi*tri/360.0);
    cout << (long double)sqrt(d) << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:16:44: error: invalid operands of types 'double' and 'int' to binary 'operator%'
   16 |     long double tri = min((h*60+m-m*12+720)%360,(m*12-(h*60+m)+720)%360);
      |                           ~~~~~~~~~~~~~~~~~^~~~
      |                                       |     |
      |                                       |     int
      |                                       double
a.cc:16:68: error: invalid operands of types 'double' and 'int' to binary 'operator%'
   16 |     long double tri = min((h*60+m-m*12+720)%360,(m*12-(h*60+m)+720)%360);
      |                                                 ~~~~~~~~~~~~~~~~~~~^~~~
      |                                                               |     |
      |                                                               |     int
      |                                                               double
Language: C++

#include<cstdio>
#include<cmath>
int a,b,h,m;
double szj,fzj,j;
int main()
{
	scanf("%d%d%d%d",a,b,h,m);
	szj=(h*60+m)*0.5;
	fzj=6*m;
	j=abs(szj-fzj);
	if(j>180)j=360-j;
	printf("%20f",sqrt(a*a+b*b-2*cos(j*M_PIE/180)*a*b));
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:44: error: 'M_PIE' was not declared in this scope; did you mean 'M_PIl'?
   12 |         printf("%20f",sqrt(a*a+b*b-2*cos(j*M_PIE/180)*a*b));
      |                                            ^~~~~
      |                                            M_PIl
Language: C++

#include<cstdio>
#include<cmath>
int a,b,h,m;
double szj,fzj,j;
int main()
{
	scanf("%d%d%d%d",a,b,h,m);
	szj=(h*60+m)*0.5;
	fzj=6*m;
	j=abs(szj-fzj);
	if(j>180)j=360-j;
	printf("%20f",sqrt(a*a-b*b+2*cos(j*M_PIE/180)*a*b));
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:44: error: 'M_PIE' was not declared in this scope; did you mean 'M_PIl'?
   12 |         printf("%20f",sqrt(a*a-b*b+2*cos(j*M_PIE/180)*a*b));
      |                                            ^~~~~
      |                                            M_PIl
Language: C++

#include<iostream>
#include<cstdio>
#include<cmath>
using namespace std;
int a, b, h, m;
double sz, fz, cha;
int main()
{
	scanf("%d%d%d%d", &a, &b, &h, &m);
	sz = (h * 60 + m) * 0.5;
	fz = 6 * m;
	cha = fabs(sz - fz);
	if(cha > 180) cha = 360 - cha;
	cha = cha * M_PI / 180;
	printf("%.20f", sqrt(a*a+b*b+2*a*b*cos*(cha)));
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:43: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator*'
   15 |         printf("%.20f", sqrt(a*a+b*b+2*a*b*cos*(cha)));
      |                                      ~~~~~^~~~
Language: C++

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <iomanip>
using namespace std;
const double pi = 3.1415926535;
int main()
{
//    cout << cos(0) << endl;
//    cout << cos(pi/4) << endl;
//    cout << cos(pi/2) << endl;
//    cout << cos(pi) << endl;
    int x,y;
    int h,m;
    cin >>x>>y>>h>>m;
    int tri = min(((h*60+m-m*12)%360+360)%360,((m*12-(h*60+m))%360+360)%360);
    if(tri==0){
        cout << fabs(x-y) << endl;
    }
    else if(tri==180){
        cout << x+y << endl;
    }
    else{
        //cout << tri << endl;
        cout << fixed << setprecision(9) ;
        cout << sqrt(x*x+y*y-2*x*y*cos(pi*tri/360.0)) << endl;
    }
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:18:17: error: 'fabs' was not declared in this scope; did you mean 'labs'?
   18 |         cout << fabs(x-y) << endl;
      |                 ^~~~
      |                 labs
a.cc:26:36: error: 'cos' was not declared in this scope
   26 |         cout << sqrt(x*x+y*y-2*x*y*cos(pi*tri/360.0)) << endl;
      |                                    ^~~
a.cc:26:17: error: 'sqrt' was not declared in this scope
   26 |         cout << sqrt(x*x+y*y-2*x*y*cos(pi*tri/360.0)) << endl;
      |                 ^~~~
Language: C

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

int main(){
        int a, b, h, m;
        double ang, len, lon, shor;
        scanf("%d %d %d %d", &a, &b, &h, &m);
        if(h>=12)
                h-=12;

        shor=h*30+m*0.5;
        lon=m*6;

        ang=fabs(shor-lon);
        ang=ang*M_PI/180;

        //if(ang>(360-ang))
        //      ang=360-ang;

        len=a*a+b*b-2*a*b*cos(ang);

        len=sqrt(len);

        printf("%lf", len);

        return 0;
}


Compiler output:
/usr/bin/ld: /tmp/cc3Tx1BH.o: in function `main':
main.c:(.text+0x10b): undefined reference to `cos'
/usr/bin/ld: main.c:(.text+0x130): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
Language: C++

#define PI 3.14159265358979323846

int main(){
    long double A,B,H,M;
    cin >> A >> B >> H >> M;
    long double L=A*A+B*B-2*A*B*cos((30.0*H-11.0*M/2.0)*PI/180.0);
    long double r=sqrt(L);
    cout << fixed << setprecision(12) <<r <<endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:5: error: 'cin' was not declared in this scope
    5 |     cin >> A >> B >> H >> M;
      |     ^~~
a.cc:6:33: error: 'cos' was not declared in this scope; did you mean 'const'?
    6 |     long double L=A*A+B*B-2*A*B*cos((30.0*H-11.0*M/2.0)*PI/180.0);
      |                                 ^~~
      |                                 const
a.cc:7:19: error: 'sqrt' was not declared in this scope
    7 |     long double r=sqrt(L);
      |                   ^~~~
a.cc:8:5: error: 'cout' was not declared in this scope
    8 |     cout << fixed << setprecision(12) <<r <<endl;
      |     ^~~~
a.cc:8:13: error: 'fixed' was not declared in this scope
    8 |     cout << fixed << setprecision(12) <<r <<endl;
      |             ^~~~~
a.cc:8:22: error: 'setprecision' was not declared in this scope
    8 |     cout << fixed << setprecision(12) <<r <<endl;
      |                      ^~~~~~~~~~~~
a.cc:8:45: error: 'endl' was not declared in this scope
    8 |     cout << fixed << setprecision(12) <<r <<endl;
      |                                             ^~~~
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); ++i)
using namespace std;
using ll = long long;
using p = pair<int,int>;
 
const double PI = acos(-1);
 
int main() {
    int a,b,h,m;
    cin >> a >> b >> h >. m;
    double th = double(h*60+m)/720 * 2*PI;
    double tm = double(m)/60 * 2*PI;
    double xh = a*cos(th), yh = a*sin(th);
    double xm = b*cos(tm), ym = b*sin(tm);
    double dx = xh - xm, dy = yh - ym;
    double ans = sqrt(dx*dx - dy*dy);
    printf("%.10lf\n", ans);
    return 0;

Compiler output:
a.cc: In function 'int main()':
a.cc:11:25: error: expected primary-expression before '.' token
   11 |     cin >> a >> b >> h >. m;
      |                         ^
a.cc:19:14: error: expected '}' at end of input
   19 |     return 0;
      |              ^
a.cc:9:12: note: to match this '{'
    9 | int main() {
      |            ^
Language: C++

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

const double PI = acos(-1);

int main() {
    int a,b,h,m;
    cin >> a >> b >> h >. m;
    double th = double(h*60+m)/720 * 2*PI;
    double tm = double(m)/60 * 2*PI;
    double xh = a*cos(th), yh = a*sin(th);
    double xm = b*cos(tm), ym = b*sin(tm);
    double dx = xh-xm, ddy = yh - ym;
    double ans = sqrt(dx*dx - dy*dy);
    printf("%.10lf\n", ans);
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:25: error: expected primary-expression before '.' token
   11 |     cin >> a >> b >> h >. m;
      |                         ^
a.cc:17:31: error: 'dy' was not declared in this scope; did you mean 'ddy'?
   17 |     double ans = sqrt(dx*dx - dy*dy);
      |                               ^~
      |                               ddy
Language: Java

import java.util.Scanner;
 
public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        String A = scan.next();
        int a = Integer.parseInt(A);
        String B = scan.next();
        int b = Integer.parseInt(B);
        String H = scan.next();
        int h = Integer.parseInt(H);
        String M = scan.next();
        int m = Integer.parseInt(M);

        double angle = Math.abs((30 * h + 0.5 * m) - 6 * m)
        double cos = Math.cos(Math.toRadians(angle));

        double ans;
        if (angle == 0) {
            ans = Math.abs(a - b);
        } else {
            ans = (a * a) + (b * b) - (2 * a * b * cos);
        }

        System.out.println(ans);
    }
}

Compiler output:
Main.java:15: error: ';' expected
        double angle = Math.abs((30 * h + 0.5 * m) - 6 * m)
                                                           ^
1 error
Language: C++

/*
AUTHOR: Aman Raj
LANG: C++
*/

using namespace std;

typedef   long long ll;
#include <bits/stdc++.h>


//setbase - cout << setbase (16); cout << 100 << endl; Prints 64
//setfill -   cout << setfill ('x') << setw (5); cout << 77 << endl; prints xxx77
//setprecision - cout << setprecision (14) << f << endl; Prints x.xxxx
//cout.precision(x)  cout<<fixed<<val;  // prints x digits after decimal in val
#define fast  ios_base::sync_with_stdio(false); cin.tie(0);  cout.tie(0);
#define all(a) a.begin(),a.end()
//#define mod 998244353
#define mod 100000007
#define inf 1e18
//#define mod 3
#define flush fflush(stdout)

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef cc_hash_table<ll, ll, hash<ll> > ht;

// find_by_order()  // order_of_key
typedef tree<
    int,
    null_type,
    less<long long int>,
    rb_tree_tag,
    tree_order_statistics_node_update>
    ordered_set;






ll power1(ll a, ll b)//a raised to power b
   {  if(b<=0) return 1; if(b==1) return a;
       ll c=power1(a,b/2);
        c*=c;c=c%mod;if(b%2==1) c*=a;c=c%mod;
        return c;
   }
   ll mi(ll a,ll m)
   { ll c= power1(a,m-2);

     return c;
   }



 struct less_then_greater {
    template<typename T, typename U>
    bool operator()(T const& lhs, U const& rhs) const {
        if (lhs.first < rhs.first) return true;
        if (rhs.first < lhs.first) return false;
        return lhs.second > rhs.second;
    }
};
 /*std::priority_queue<std::pair<int, int>,
                    std::vector<std::pair<int, int>>,
                    less_then_greater
                   > pq;*/



  int main()
{    fast;
 cout<<setprecision(10)<<fixed;
  ll a,b;cin>>a>>b;
    ll h,m;cin>>h>>m;
      m+=h*60;
      double angle = abs(6*m - m/2 );
      angle%=360;
       //cout<<angle<<endl;
      angle*=3.14159265358979323846;angle/=180;
     double ans= a*a + b*b -2*a*b* cos(angle);
      ans=sqrt(ans);
  cout<<ans;
        return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:79:12: error: invalid operands of types 'double' and 'int' to binary 'operator%'
   79 |       angle%=360;
      |       ~~~~~^~~~~
a.cc:79:12: note:   in evaluation of 'operator%=(double, int)'
Language: C

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

int A,B,H,M;
double k,C,c;
int main(){
  scanf("%d %d %d %d",&A,&B,&H,&M);
  H=30*H+30*M/60;
  M=6*M;
  k=H-M;  //kは角度
  k=M_PI*k/180.0;  //kはラジアン
  C=A*A+B*B-2*A*B*(cos(k));
  C=sqrt(C);
  printf("%.18lf\n",C);

  return(0);
}

Compiler output:
/usr/bin/ld: /tmp/ccLB7XJD.o: in function `main':
main.c:(.text+0x115): undefined reference to `cos'
/usr/bin/ld: main.c:(.text+0x140): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
Language: Java

import java.util.Scanner;

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author Varun
 */
public class div168 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int h = sc.nextInt();
        int m = sc.nextInt();
        double th =(double)(h*60+m)/720 *2*Math.PI;
        double tm =(double)(m/60)*2*Math.PI;
        double xh = a*Math.cos(th);
        double yh = a*Math.sin(th);
        double xm = b*Math.cos(tm);
        double ym = b*Math.sin(tm);
        double dx = xh-xm;
        double dy = yh-ym;
        double ans = ((dx*dx)+(dy*dy));
        double ans1 = Math.sqrt(ans);
        System.out.printf("%.10f\n",ans1);
        
        
    }
    
}


Compiler output:
Main.java:13: error: class div168 is public, should be declared in a file named div168.java
public class div168 {
       ^
1 error
Language: C++

#include<iostream>
#define _USE_MATH_DEFINES
#include <math.h>
#include<iomanip>
using namespace std;
int A, B, H, M;

float kakudo(float a, float b)
{	
	if (a - b >= -180 && a - b <= 180) return a - b;
	else if (a - b > 180) return b + 360 - a;
	else if (a - b < -180) return a + 360 - b;
}


int main()
{	
	cin >> A >> B >> H >> M;
	float jisin, funsin;
	jisin = (60 * H + M) / 2;
	funsin = 6 * M;
	float c=kakudo(jisin, funsin);		
	long double d = (long double)(A * A + B *B) - (long double)(2*A * B) * cosl(M_PI*c/180);
	
	cout << setprecision(12)<<sqrtl(ans) << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:25:41: error: 'ans' was not declared in this scope; did you mean 'abs'?
   25 |         cout << setprecision(12)<<sqrtl(ans) << endl;
      |                                         ^~~
      |                                         abs
a.cc: In function 'float kakudo(float, float)':
a.cc:13:1: warning: control reaches end of non-void function [-Wreturn-type]
   13 | }
      | ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define ll long long
const ll MOD = 1000000007;
const ll INF = 1061109567;
const double EPS = 1e-10;
const double pi = 3.1415926535;
int main(){
    int A,B,H,M;
    double ang_H,ang_M,rad,deg;
    cin>>A>>B>>H>>M;
    ang_H=30*H+0.5*M;
    ang_M=6*M;
    rad=(ang_H-ang_M)*(pi/180);
    cout<<setprecision(10)<<sqrt((double)(A*A)+(double)(B*B)-2*A*B*abs(cos(rad)));
    ret

Compiler output:
a.cc: In function 'int main()':
a.cc:16:5: error: 'ret' was not declared in this scope
   16 |     ret
      |     ^~~
a.cc:16:8: error: expected '}' at end of input
   16 |     ret
      |        ^
a.cc:8:11: note: to match this '{'
    8 | int main(){
      |           ^
Language: C++

#include<stdio.h>
#include <iomanip>
#include <iostream>
#include<string>
#include<vector>
#include<map>
#include<algorithm>
#include <random>
#include <chrono>

#define rep(n) for(int i=0;i<n;i++)

using namespace std;
int main() {
	double a, b, h, m;
	double ans;
	double rad;
	cin >> a >> b >> h >> m;
	rad = (h * 30.00 + 0.5 * m - m * 6);


	ans = sqrt(a * a + b * b - 2.0 * a * b * cos(rad * pai / 180.0));
	cout << setprecision(30) << ans;


}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:60: error: 'pai' was not declared in this scope
   22 |         ans = sqrt(a * a + b * b - 2.0 * a * b * cos(rad * pai / 180.0));
      |                                                            ^~~
Language: C++

int main() {
	double a, b, h, m;
	double ans;
	double rad;
	cin >> a >> b >> h >> m;
	rad = (h * 30.00 + 0.5 * m - m * 6);


	ans = sqrt(a * a + b * b - 2.0 * a * b * cos(rad * pai / 180.0));
	cout << setprecision(30) << ans;


}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: 'cin' was not declared in this scope
    5 |         cin >> a >> b >> h >> m;
      |         ^~~
a.cc:9:60: error: 'pai' was not declared in this scope
    9 |         ans = sqrt(a * a + b * b - 2.0 * a * b * cos(rad * pai / 180.0));
      |                                                            ^~~
a.cc:9:50: error: 'cos' was not declared in this scope
    9 |         ans = sqrt(a * a + b * b - 2.0 * a * b * cos(rad * pai / 180.0));
      |                                                  ^~~
a.cc:9:15: error: 'sqrt' was not declared in this scope
    9 |         ans = sqrt(a * a + b * b - 2.0 * a * b * cos(rad * pai / 180.0));
      |               ^~~~
a.cc:10:9: error: 'cout' was not declared in this scope
   10 |         cout << setprecision(30) << ans;
      |         ^~~~
a.cc:10:17: error: 'setprecision' was not declared in this scope
   10 |         cout << setprecision(30) << ans;
      |                 ^~~~~~~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define PI 3.14159265
int main(){
int a,b,h,m;
  cin>>a>>b>>h>>m;
  long double ht=h*30;
  long double mt=m*6;
  long double t=abs(ht-mt);
  long double l=pow(a,2)+pow(b,2);
  long double r=long double(b);
  l=l-(long double)2*a*r*cos(j*PI/180);
  cout<<sqrt(l)<<endl;

  }

Compiler output:
a.cc: In function 'int main()':
a.cc:11:17: error: expected primary-expression before 'long'
   11 |   long double r=long double(b);
      |                 ^~~~
a.cc:12:30: error: 'j' was not declared in this scope
   12 |   l=l-(long double)2*a*r*cos(j*PI/180);
      |                              ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define PI 3.14159265
int main(){
int a,b,h,m;
  cin>>a>>b>>h>>m;
  int ht=h*30;
  int mt=m*6;
  int t=abs(ht-mt);
  float j=float(t);
  float l=pow(a,2)+pow(b,2);
  int r=float(b);
  l=l-2*a*r*cos(j*PI/180);
  cout<<l<<endl;

  }
}

Compiler output:
a.cc:17:1: error: expected declaration before '}' token
   17 | }
      | ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define PI 3.14159265;
int main(){
int a,b,h,m;
  cin>>a>>b>>h>>m;
  int ht=h*30;
  int mt=m*6;
  int t=abs(ht-mt);
  float j=float(t);
  float l=pow(a,2)+pow(b,2);
  int r=float(b);
  l=l-2*a*r*cos(j*PI/180);
  cout<<l<<endl;

  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:22: error: expected ')' before ';' token
    3 | #define PI 3.14159265;
      |                      ^
a.cc:13:19: note: in expansion of macro 'PI'
   13 |   l=l-2*a*r*cos(j*PI/180);
      |                   ^~
a.cc:13:16: note: to match this '('
   13 |   l=l-2*a*r*cos(j*PI/180);
      |                ^
a.cc:13:21: error: expected primary-expression before '/' token
   13 |   l=l-2*a*r*cos(j*PI/180);
      |                     ^
a.cc: At global scope:
a.cc:17:1: error: expected declaration before '}' token
   17 | }
      | ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define PI 3.14159265;
int main(){
int a,b,h,m;
  cin>>a>>b>>h>>m;
  int ht=h*30;
  int mt=m*6;
  int t=abs(ht-mt);
  float j=float(t);
  float l=pow(a,2)+pow(b,2);
  int r=float(b);
  l=l-2*a*r*cos(j*PI/180);
  cout<<l<<endl;

  }

Compiler output:
a.cc: In function 'int main()':
a.cc:3:22: error: expected ')' before ';' token
    3 | #define PI 3.14159265;
      |                      ^
a.cc:13:19: note: in expansion of macro 'PI'
   13 |   l=l-2*a*r*cos(j*PI/180);
      |                   ^~
a.cc:13:16: note: to match this '('
   13 |   l=l-2*a*r*cos(j*PI/180);
      |                ^
a.cc:13:21: error: expected primary-expression before '/' token
   13 |   l=l-2*a*r*cos(j*PI/180);
      |                     ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
define PI 3.14159265;
int main(){
int a,b,h,m;
  cin>>a>>b>>h>>m;
  int ht=h*30;
  int mt=m*6;
  int t=abs(ht-mt);
  float j=float(t);
  float l=pow(a,2)+pow(b,2);
  l=l-2*a*b*cos(t*PI/180);
  cout<<l<<endl;

  }
}

Compiler output:
a.cc:3:1: error: 'define' does not name a type
    3 | define PI 3.14159265;
      | ^~~~~~
a.cc: In function 'int main()':
a.cc:12:19: error: 'PI' was not declared in this scope
   12 |   l=l-2*a*b*cos(t*PI/180);
      |                   ^~
a.cc: At global scope:
a.cc:16:1: error: expected declaration before '}' token
   16 | }
      | ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
define PI 3.14159265
int main(){
int a,b,h,m;
  cin>>a>>b>>h>>m;
  int ht=h*30;
  int mt=m*6;
  int t=abs(ht-mt);
  float j=float(t);
  float l=a**2+b**2;
  l=l-2*a*b*cos(t*PI/180);
  cout<<l<<endl;

  }
}

Compiler output:
a.cc:3:1: error: 'define' does not name a type
    3 | define PI 3.14159265
      | ^~~~~~
a.cc:16:1: error: expected declaration before '}' token
   16 | }
      | ^