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

#include <stdio.h>
  int main(){
    int n,j,i;
    int x[1001][4];
    int p,q,r,c;
    scanf("%d",&n);
    for(j=0;j<n;j++){
      scanf("%d %d %d %d",&i,&x[j+1][1],&x[j+1][2],&x[j+1][3],&x[j+1][0]);
}
printf("%d %d %d %d",&p,&q,&r,&c);
for(j=0;j<n;j++){
int sum;
  if(x[j+1][1]<=p && x[j+1][2]<=q && x[j+1][3]<=r && x[j+1][0]<=c){
printf("%d\n",j+1);
}else{
sum++;
}
if(sum==n){
printf("NA");
printf("\n");
}
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:2: error: expected '}' at end of input
   23 | }
      |  ^
a.cc:2:13: note: to match this '{'
    2 |   int main(){
      |             ^
Language: C++

#include <stdio.h>
  int main(){
    int n,j,i;
    int x[1001][4];
    int p,q,r,c;
    scanf("%d",&n);
    for(j=0;j<n;j++){
      scanf("%d %d %d %d",&i,&x[j+1][1],&x[j+1][2],&x[j+1][3]);
x[j+1][0]=4*x[j+1][1]+9*x[j+1][2]+4*[j+1][3];
}
printf("%d %d %d %d",&p,&q,&r,&c);
for(j=0;j<n;j++){
int sum;
  if(x[j+1][1]<=p && x[j+1][2]<=q && x[j+1][3]<=r && x[j+1][0]<=c){
printf("%d\n",j+1);
}else{
sum++;
}
if(sum==n){
printf("NA");
printf("\n");
}
}
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:39: error: expected ',' before '+' token
    9 | x[j+1][0]=4*x[j+1][1]+9*x[j+1][2]+4*[j+1][3];
      |                                       ^
      |                                       ,
a.cc:9:39: error: expected identifier before '+' token
a.cc: In lambda function:
a.cc:9:42: error: expected '{' before '[' token
    9 | x[j+1][0]=4*x[j+1][1]+9*x[j+1][2]+4*[j+1][3];
      |                                          ^
a.cc: In function 'int main()':
a.cc:9:42: error: no match for 'operator[]' (operand types are 'main()::<lambda()>' and 'int')
Language: C++

#include <stdio.h>
  int main(){
    int n,j,i;
    int x[1001][4];
    int p,q,r,c;
    scanf("%d",&n);
    for(j=0;j<n;j++){
      scanf("%d %d %d %d",&i,&x[j+1][1],&x[j+1][2],&x[j+1][3]);
x[j+1][0]=x[j+1][1]*4+x[j+1][2]*9+[j+1][3]*4;
}
printf("%d %d %d %d",&p,&q,&r,&c);
for(j=0;j<n;j++){
int sum;
  if(x[j+1][1]<=p && x[j+1][2]<=q && x[j+1][3]<=r && x[j+1][0]<=c){
printf("%d\n",j+1);
}else{
sum++;
}
if(sum==n){
printf("NA");
printf("\n");
}
}
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:37: error: expected ',' before '+' token
    9 | x[j+1][0]=x[j+1][1]*4+x[j+1][2]*9+[j+1][3]*4;
      |                                     ^
      |                                     ,
a.cc:9:37: error: expected identifier before '+' token
a.cc: In lambda function:
a.cc:9:40: error: expected '{' before '[' token
    9 | x[j+1][0]=x[j+1][1]*4+x[j+1][2]*9+[j+1][3]*4;
      |                                        ^
a.cc: In function 'int main()':
a.cc:9:40: error: no match for 'operator[]' (operand types are 'main()::<lambda()>' and 'int')
Language: C++

#include <stdio.h>   int main(){       while(1){       int n;        int j,i;       int p,q,r,c;     int x[1001][4];     int sum=0;            scanf("%d",&n);           if(n==0){               goto a;           }     for(j=0;j<n;j++){       scanf("%d %d %d %d",&i,&x[j+1][1],&x[j+1][2],&x[j+1][3]); x[i][0]=x[i][1]*4+x[i][2]*9+x[i][3]*4; } scanf("%d %d %d %d",&p,&q,&r,&c); for(j=0;j<n;j++){     if(x[j+1][1]<=p && x[j+1][2]<=q && x[j+1][3]<=r && x[j+1][0]<=c){ printf("%d\n",j+1); }else{ sum++; } } if(sum==n){ printf("NA\n"); } sum=0;       }       a: return 0; } 

Compiler output:
a.cc:1:22: warning: extra tokens at end of #include directive
    1 | #include <stdio.h>   int main(){       while(1){       int n;        int j,i;       int p,q,r,c;     int x[1001][4];     int sum=0;            scanf("%d",&n);           if(n==0){               goto a;           }     for(j=0;j<n;j++){       scanf("%d %d %d %d",&i,&x[j+1][1],&x[j+1][2],&x[j+1][3]); x[i][0]=x[i][1]*4+x[i][2]*9+x[i][3]*4; } scanf("%d %d %d %d",&p,&q,&r,&c); for(j=0;j<n;j++){     if(x[j+1][1]<=p && x[j+1][2]<=q && x[j+1][3]<=r && x[j+1][0]<=c){ printf("%d\n",j+1); }else{ sum++; } } if(sum==n){ printf("NA\n"); } sum=0;       }       a: return 0; }
      |                      ^~~
/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<stdio.h>
 int main() {
     int n,i,P,Q,R,C,x,y=0;
     int a[1000][5]={0};
     while(scanf("%d",&n) && n!=0){ 
        for(x=0; x<n; x++){ 
            scanf("%d %d %d %d",&i,&p,&q,&r);
a[x][1]=p;
a[x][2]=q;
a[x][3]=r;
                    a[x][4]=a[x][1]*4+a[x][2]*9+a[x][3]*4;
          }
         scanf("%d %d %d %d",&P,&Q,&R,&C);
         for(x=0; x<n; x++){
             if(a[x][1]<=P && a[x][2]<=Q && a[x][3]<=R && a[x][4]<=C){y=1;
                                printf("%d\n",a[x][0]);
             }         }
         if(y==0) 
            printf("NA\n");
         y=0; 
    }
     return 0;
 } 

Compiler output:
a.cc: In function 'int main()':
a.cc:7:37: error: 'p' was not declared in this scope
    7 |             scanf("%d %d %d %d",&i,&p,&q,&r);
      |                                     ^
a.cc:7:40: error: 'q' was not declared in this scope
    7 |             scanf("%d %d %d %d",&i,&p,&q,&r);
      |                                        ^
a.cc:7:43: error: 'r' was not declared in this scope
    7 |             scanf("%d %d %d %d",&i,&p,&q,&r);
      |                                           ^
Language: C++

#include<cstdio>
using namespace std;
int main(){
    int n;
    while(scanf("%d",&n),n){
        int a[1024],b[1024],c[1024],d[1024],cal[1024];
        for(int i = 0;i < n; i++){
            scanf("%d%d%d%d",&a[i],&b[i],&c[i],&d[i]);
            cal[i] = (4*b[i]) + (7*c[i]) + (4*d[i]);
        }
        int P,Q,R,C;
        scanf("%d%d%d%d",&P,&Q,&R,&C);

        bool f = false;

        for(int i = 0;i < n; i++){
            if(b[i] <= P&&c[i] <= Q&&d[i] <= R&&cal[i] <= C){
                printf("%d\n",a[i]);
                f = true;
            }
        }
        if(f == false)printf("NA\n");
    }
    return 0;
}
#include<cstdio>
using namespace std;
int main(){
    int n;
    while(scanf("%d",&n),n){
        int a[1024],b[1024],c[1024],d[1024],cal[1024];
        for(int i = 0;i < n; i++){
            scanf("%d%d%d%d",&a[i],&b[i],&c[i],&d[i]);
            cal[i] = (4*b[i]) + (7*c[i]) + (4*d[i]);
        }
        int P,Q,R,C;
        scanf("%d%d%d%d",&P,&Q,&R,&C);

        bool f = false;

        for(int i = 0;i < n; i++){
            if(b[i] <= P&&c[i] <= Q&&d[i] <= R&&cal[i] <= C){
                printf("%d\n",a[i]);
                f = true;
            }
        }
        if(f == false)printf("NA\n");
    }
    return 0;
}
#include<cstdio>
using namespace std;
int main(){
    int n;
    while(scanf("%d",&n),n){
        int a[1024],b[1024],c[1024],d[1024],cal[1024];
        for(int i = 0;i < n; i++){
            scanf("%d%d%d%d",&a[i],&b[i],&c[i],&d[i]);
            cal[i] = (4*b[i]) + (7*c[i]) + (4*d[i]);
        }
        int P,Q,R,C;
        scanf("%d%d%d%d",&P,&Q,&R,&C);

        bool f = false;

        for(int i = 0;i < n; i++){
            if(b[i] <= P&&c[i] <= Q&&d[i] <= R&&cal[i] <= C){
                printf("%d\n",a[i]);
                f = true;
            }
        }
        if(f == false)printf("NA\n");
    }
    return 0;
}
#include<cstdio>
using namespace std;
int main(){
    int n;
    while(scanf("%d",&n),n){
        int a[1024],b[1024],c[1024],d[1024],cal[1024];
        for(int i = 0;i < n; i++){
            scanf("%d%d%d%d",&a[i],&b[i],&c[i],&d[i]);
            cal[i] = (4*b[i]) + (7*c[i]) + (4*d[i]);
        }
        int P,Q,R,C;
        scanf("%d%d%d%d",&P,&Q,&R,&C);

        bool f = false;

        for(int i = 0;i < n; i++){
            if(b[i] <= P&&c[i] <= Q&&d[i] <= R&&cal[i] <= C){
                printf("%d\n",a[i]);
                f = true;
            }
        }
        if(f == false)printf("NA\n");
    }
    return 0;
}

Compiler output:
a.cc:28:5: error: redefinition of 'int main()'
   28 | int main(){
      |     ^~~~
a.cc:3:5: note: 'int main()' previously defined here
    3 | int main(){
      |     ^~~~
a.cc:53:5: error: redefinition of 'int main()'
   53 | int main(){
      |     ^~~~
a.cc:3:5: note: 'int main()' previously defined here
    3 | int main(){
      |     ^~~~
a.cc:78:5: error: redefinition of 'int main()'
   78 | int main(){
      |     ^~~~
a.cc:3:5: note: 'int main()' previously defined here
    3 | int main(){
      |     ^~~~
Language: C++

#include<iostream>
#include<vector>
#include<set>
using namespace std;

int main(){
	int n;
	while(cin>>n&&n){
		int P,Q,R,C;
		set<vector<int> > s;
		set<vector<int> >::iterator it;
		while(n--){
			vector<int> v(4);
			cin>>v[0]>>v[1]>>v[2]>>v[3];
			s.insert(v);
		}
		bool f=false;
		cin>>P>>Q>>R>>C;
		for(it=s.begin();it!=s.end();++it){
			vector<int> &v=*it;
			if(v[1]<=P&&v[2]<=Q&&v[3]<=R&&v[1]*4+v[2]*9+v[3]*4<=C){
				cout<<v[0]<<endl;
				f=true;
			}
		}
		if(!f)cout<<"NA\n";
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:40: error: binding reference of type 'std::vector<int>&' to 'const std::vector<int>' discards qualifiers
   20 |                         vector<int> &v=*it;
      |                                        ^~~
Language: C

#include <vector>
#include <algorithm>
#include <cstdio>
using namespace std;
int main(){
	int n,y,b,r,t,j;
	for(;scanf("%d%d",&n,&y),n;){
		vector<pair<double,int> >v;
		for(;n--;){
			scanf("%d%d%d",&b,&r,&t);
			if(t==1)v.push_back(make_pair(1+y*r/100.0,b));
			else{
				double d=1;
				for(j=0;j<y;j++)d*=1+r/100.0;
				v.push_back(make_pair(d,b));
			}
		}
		sort(v.begin(),v.end());
		printf("%d\n",v[v.size()-1].second);
	}
}

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

#include<iostream>
#include<vector>

using namespace std;

class Bank{
public:
	int id, r, t;
	Bank(int id, int r, int t) :id(id), r(r), t(t){}
};

int main(){
	while (true){
		int n;
		cin >> n;
		int y;
		cin >> y;

		vector<Bank> vb;
		for (int i = 0; i < n; ++i) {
			int b, r, t;
			cin >> b >> r >> t;

			vb.push_back(Bank(b, r, t));
		}

		// ganpon * (1 + y * r/100)
		// ganpon * (1 + r/100)^y

		double maxi = 0;
		int ans = -1;

		for (int i = 0; i < vb.size(); ++i){
			double g = 100000;
			double r1 = g * (1. + y * vb[i].r / 100.);
			double r2 = g * pow(1 + vb[i].r / 100., y);
			if (vb[i].t == 1){
				if (maxi < r1){
					maxi = r1;
					ans = vb[i].id;
				}
			}
			else{
				if (maxi < r2){
					maxi = r2;
					ans = vb[i].id;
				}
			}
		}

		cout << ans << endl;
	}
}

// 1

Compiler output:
a.cc: In function 'int main()':
a.cc:36:41: error: 'pow' was not declared in this scope
   36 |                         double r2 = g * pow(1 + vb[i].r / 100., y);
      |                                         ^~~
Language: C++

#include <iostream>
#include <cstdio>
#include <cmath>
using namespace std;
typedef pair<double, int> P;

int main(void) {
    int kosu, year;
    while(cin >> kosu, kosu != 0){
        cin >> year;
        P max = P((double)INT_MIN, 0);
        for(int r = 0; r < kosu; r++) {
            int number, kind, nennri; cin >> number >> kind >> nennri;
            double motoriMultiple;
            if(kind == 1) {motoriMultiple = (1 + year * nennri / 100.0);}
            else {motoriMultiple = pow((1 + nennri / 100.0), year);}
            if(motoriMultiple > max.first) {
                max = P(motoriMultiple, number);
            }
        }
        cout << max.second << endl;
    }
    return(0);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:27: error: 'INT_MIN' was not declared in this scope
   11 |         P max = P((double)INT_MIN, 0);
      |                           ^~~~~~~
a.cc:4:1: note: 'INT_MIN' is defined in header '<climits>'; this is probably fixable by adding '#include <climits>'
    3 | #include <cmath>
  +++ |+#include <climits>
    4 | using namespace std;
Language: C++

#include<iostream>
#include<string>
#include<algorithm>
#include<sstream>
#include <functional>
using namespace std;


int main(){
	int n;
	while(cin>>n&&n){
		double now=10000,y,r,t,ans,iti=0;
		int b;
			cin>>y;
			for(int i=0;i<n;i++){
				cin>>b>>r>>t;
				now=10000;
				if(t==1){
					now=now*(1+y*(r/100));
				}
				else if(t==2){
					now=now*pow((1+r/100),y);
				}
				if(now>iti){
					iti=now;
					ans=b;
				}
				//cout<<b<<" "<<now<<endl;
			}
		cout<<ans<<endl;
	}
	
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:49: error: 'pow' was not declared in this scope; did you mean 'now'?
   22 |                                         now=now*pow((1+r/100),y);
      |                                                 ^~~
      |                                                 now
Language: C++

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

int main() {
    int n, y;
    while (cin >> n, n) {
        cin >> y;
        int b, r, t, res;
        double mx = 0;
        for (int i=0; i<n; ++i) {
            cin >> b >> r >> t;
            if (t == 1) {
                double interest = 10000.0 * (1 + y * r / 100.0);
                if (mx < interest) {
                    mx = interest;
                    res = b;
                }
            } else {
                double interest = 10000.0 * pow(1 + r / 100.0, y);
                if (mx < interest) {
                    mx = interest;
                    res = b;
                }
            }
        }
        cout << res << endl;
    }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:21:45: error: 'pow' was not declared in this scope
   21 |                 double interest = 10000.0 * pow(1 + r / 100.0, y);
      |                                             ^~~
Language: C++

#include<stdio.h>
#include<iostream>
using namespace std;

int main(){

int n;
while(1){

scanf("%d",&n);if(n==0)break;
int y,t,b,r;

double s=0;
int max=0,MM=0;
scanf("%d",&y);
for(int i=0;i<n;i++){
scanf("%d %d %d",&b,&r,&t)

if(t==1){
s=1+y*r/100;
}
else{
double s1=1+r/100???s=s1;
for(int j=0;j<y;j++)
s*=s1;
}

if(s>max){max=s;MM=b}
}
printf("%d\n",MM);
}
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:27: error: expected ';' before 'if'
   17 | scanf("%d %d %d",&b,&r,&t)
      |                           ^
      |                           ;
   18 | 
   19 | if(t==1){
      | ~~                         
a.cc:22:1: error: 'else' without a previous 'if'
   22 | else{
      | ^~~~
a.cc:23:19: error: expected primary-expression before '?' token
   23 | double s1=1+r/100???s=s1;
      |                   ^
a.cc:23:20: error: expected primary-expression before '?' token
   23 | double s1=1+r/100???s=s1;
      |                    ^
a.cc:23:25: error: expected ':' before ';' token
   23 | double s1=1+r/100???s=s1;
      |                         ^
      |                         :
a.cc:23:25: error: expected primary-expression before ';' token
a.cc:23:25: error: expected ':' before ';' token
   23 | double s1=1+r/100???s=s1;
      |                         ^
      |                         :
a.cc:23:25: error: expected primary-expression before ';' token
a.cc:23:25: error: expected ':' before ';' token
   23 | double s1=1+r/100???s=s1;
      |                         ^
      |                         :
a.cc:23:25: error: expected primary-expression before ';' token
a.cc:28:21: error: expected ';' before '}' token
   28 | if(s>max){max=s;MM=b}
      |                     ^
      |                     ;
Language: C++

#include<stdio.h>
int main(void){
	int n,y,b[50],x,r,t,sum[50],max,i;
	while(1){
		max=-1;
		scanf("%d",&n);
		scanf("%d",&y);
		for(i=0;i<n;i++){
			scanf("%d %d %d",&b[i],&r.&t);
			if(t==1){
				sum[j]=100*(1+y*(r/100));
			}
			if(t==2){
				sum[j]=100*((1+r/100)^y);
			}
		}
		for(i=0;i<n;i++){
			if(max<sum[j]){
				max=sum[j];
				x=b[j];
			}
		}
		printf("%d\n",x);
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:51: error: expected unqualified-id before '&' token
    9 |                         scanf("%d %d %d",&b[i],&r.&t);
      |                                                   ^
a.cc:11:37: error: 'j' was not declared in this scope
   11 |                                 sum[j]=100*(1+y*(r/100));
      |                                     ^
a.cc:14:37: error: 'j' was not declared in this scope
   14 |                                 sum[j]=100*((1+r/100)^y);
      |                                     ^
a.cc:18:36: error: 'j' was not declared in this scope
   18 |                         if(max<sum[j]){
      |                                    ^
Language: C++

#include<iostream>
using namespace std;
int main(){
	int n,y,b,r,t,ma=0,c,ni;
	while(1){
	cin>>n;
	if(n=0)
	break;
	cin>>y;
	for(i=1;i<=n;i++){
		cin>>b>>r>>t;
		if(t==1){
			if(ma<10000*(1+y*r/100)){
				ma=10000*(1+y*r/100);
				c=b;
			}
		}
		if(t==2){
			ni=10000;
			for(i=1;i<=y;i++){
				ni=ni*(1+r/100);
			}
			if(ma<ni){
				ma=ni;
				c=b;
			}
		}
	}
	cout<<c;
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:13: error: 'i' was not declared in this scope; did you mean 'ni'?
   10 |         for(i=1;i<=n;i++){
      |             ^
      |             ni
Language: C++

#include<iostream>
using namespace std;
int main(){
	int n,y,b,r,t,ma=0,c,ni;
	while(1){
	cin>>n;
	if(n=0)
	break;
	cin>>y;
	for(i=1;i<=n;i++){
		cin>>b>>r>>t;
		if(t==1){
			ni=10000*(1+y*r/100);
			if(ma<ni){
				ma=ni
				c=b;
			}
		}
		if(t==2){
			ni=10000;
			for(i=1;i<=y;i++){
				ni=ni*(1+r/100);
			}
			if(ma<ni){
				ma=ni;
				c=b;
			}
		}
	}
	cout<<c<<endl;
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:13: error: 'i' was not declared in this scope; did you mean 'ni'?
   10 |         for(i=1;i<=n;i++){
      |             ^
      |             ni
a.cc:15:38: error: expected ';' before 'c'
   15 |                                 ma=ni
      |                                      ^
      |                                      ;
   16 |                                 c=b;
      |                                 ~
Language: C++

#include<stdio.h>
int main()
{
	int n, y, b, r, t;
	float many1[100] = { 0 }, many2[100] = { 0 };
	int i, j, k, l, cnt = 0, max = 0;
	while (1) {
		many1[100] = { 0 };
		many2[100] = { 0 };
		scanf("%d", &n);
		if (n == 0) {
			break;
		}
		scanf("%d", &y);
		for (i = 0; i < n; i++) {
			scanf("%d %d %d", &b, &r, &t);
			if (t == 1) {
				many1[b] = 100 * (1 + y*(r / 100));
			}
			if (t == 2) {
				many1[b] = 100 * (1 + (y / 100));

				for (j = 0; j < y; j++) {
					many1[b] = many1[b] * many1[b];
				}
		for (i = 0; i < 100; i++) {
			if (many1[i] > max) {
				max = many1[i];
				cnt = i;
			}
		}
		printf("%d\n",cnt);

	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:35:2: error: expected '}' at end of input
   35 | }
      |  ^
a.cc:7:19: note: to match this '{'
    7 |         while (1) {
      |                   ^
a.cc:35:2: error: expected '}' at end of input
   35 | }
      |  ^
a.cc:3:1: note: to match this '{'
    3 | {
      | ^
Language: C++

#include<iostream>
using namespace std;
int main(){
	int n,y,b,r,t,ma=0,c,ni;
	while(1){
	cin>>n;
	if(n==0)
	break;
	cin>>y;
	for(i=1;i<=n;i++){
		cin>>b>>r>>t;
		if(t==1){
			ni=10000*(1+y*r/100);
			if(ma<ni){
				ma=ni
				c=b;
			}
		}
		if(t==2){
			ni=10000;
			for(i=1;i<=y;i++){
				ni=ni*(1+r/100);
			}
			if(ma<ni){
				ma=ni;
				c=b;
			}
		}
	}
	cout<<c<<endl;
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:13: error: 'i' was not declared in this scope; did you mean 'ni'?
   10 |         for(i=1;i<=n;i++){
      |             ^
      |             ni
a.cc:15:38: error: expected ';' before 'c'
   15 |                                 ma=ni
      |                                      ^
      |                                      ;
   16 |                                 c=b;
      |                                 ~
Language: C++

#include<stdio.h>
int man()
{
	int i, j, n, b, t, y, cnt = 0;
	float many[52] = { 0 }, r, suu, max=0;
	while (1) {
		scanf("%d", &n);
		if (n == 0) {
			break;
		}
		scanf("%d", &y);
		scanf("%d %f %d", &b, &r, &t);
		if (t == 1) {
			many[b] = 100.0*(1 + y*(float)r / 100);
		}
		else {
			many[b] = 100.0*(1 + (float)y / 100);
			suu = many[b];
			for (j = 0; j < y; j++) {
				many[b] = suu*many[b];
			}
		}
		for (i = 0; i < 50; i++) {
			if (many[i] > max) {
				max = many[i];
				cnt = i;
			}
		}
		printf("%d\n", cnt);
	}
}

Compiler output:
a.cc: In function 'int man()':
a.cc:31:1: warning: no return statement in function returning non-void [-Wreturn-type]
   31 | }
      | ^
/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 n,y,b,r,t,c;
	float ni,ma=0;
	while(1){
	cin>>n;
	if(n==0)
	break;
	cin>>y;
	for(i=1;i<=n;i++){
		cin>>b>>r>>t;
		if(t==1){
			ni=10000*(1+y*r*0.01);
			if(ma<ni){
				ma=ni
				c=b;
			}
		}
		if(t==2){
			ni=10000;
			for(i=1;i<=y;i++){
				ni=ni*(1+r*0.01);
			}
			if(ma<ni){
				ma=ni;
				c=b;
			}
		}
	}
	cout<<c<<endl;
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:13: error: 'i' was not declared in this scope; did you mean 'ni'?
   11 |         for(i=1;i<=n;i++){
      |             ^
      |             ni
a.cc:16:38: error: expected ';' before 'c'
   16 |                                 ma=ni
      |                                      ^
      |                                      ;
   17 |                                 c=b;
      |                                 ~
Language: C++

#include<cstdio>
#include<iostream>
#include<math.h>
using namespace std;
int main(void){
	int n,gin,kinri,i,m,maxgin,cpy;
	double y,nenri,ganri,max,d;
	while(1){
		m=10000;
		cin>>n;
		if(n==0) break;
		cin>>y;
		max=-1;
		for(i=0;i<n;i++){
			cin>>gin>>nenri>>kinri;
			if(kinri==1) ganri=m*(1+y*(nenri/100));
			if(kinri==2){
				d=(1+nenri/100);
				cpy=d;
				for(i=0;i<y;i+) d=d*cpy;
				ganri=m*d;
			}
			if(max<ganri){
				max=ganri;
				maxgin=gin;
			}
		}
		cout<<maxgin<<endl;
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:47: error: expected primary-expression before ')' token
   20 |                                 for(i=0;i<y;i+) d=d*cpy;
      |                                               ^
Language: C++

#include <iostream>
#include <cstdio>
#include <vector>
#include <cmath>
using namespace std;

int main(){
	int n;
	while(cin >> n && n){
		int y;
		cin >> y;
		vector< pair<double,int> > S;
		for(int i = 0 ; i < n ; i++){
			double b,r,t;
			cin >> b >> r >> t;
			
			if( t == 1 ){
				S.push_back(make_pair(1+y*r/100.0,(int)b));
			}else{
				S.push_back(make_pair(pow(1+r/100.0,y),(int)b));
			}
		}
		sort(S.rbegin(),S.rend());
		cout << S[0].second << endl;
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:17: error: 'sort' was not declared in this scope; did you mean 'sqrt'?
   23 |                 sort(S.rbegin(),S.rend());
      |                 ^~~~
      |                 sqrt
Language: C++

int main()
{
	while(true){
		int n;
		cin >> n;
		if(n==0)
			break;

		int y;
		double sum;
		int num=0;
		double max=0.0;

		cin >> y;

		for(int i=0 ;i<n ;i++){
			int b,r,t;
			cin >> b >> r >> t;

			if(t==1){
				sum = 1.0+(double)y*(double)r/100.0;
				sum *= 10.0;
			}
			else{
				sum = 1.0;
				for(int j=0 ;j<y ;j++){
					sum *= 1.0+(double)r/100.0;
				}
				sum *= 10.0;
			}

			if(max < sum){
				max = sum;
				num = b;
			}
		}
		cout << num << endl;
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:17: error: 'cin' was not declared in this scope
    5 |                 cin >> n;
      |                 ^~~
a.cc:37:17: error: 'cout' was not declared in this scope
   37 |                 cout << num << endl;
      |                 ^~~~
a.cc:37:32: error: 'endl' was not declared in this scope
   37 |                 cout << num << endl;
      |                                ^~~~
Language: C++

#include<algorithm>
#include<cstdio>
using namespace std;
int main(){
	int i;
	int n;
	while(scanf("%d",&n),n){
		int y;
		scanf("%d",&y);
		double mx=0;
		int my;
		for(i=0;i<n;++i){
			int p,q,r;
			scanf("%d%d%d",&p,&q,&r);
			if((r==1?y*q/100.+1:pow(q/100.+1,y))>mx){
				mx=r==1?y*q/100.+1:pow(q/100.+1,y);
				my=p;
			}
		}
		printf("%d\n",my);
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:45: error: 'pow' was not declared in this scope
   15 |                         if((r==1?y*q/100.+1:pow(q/100.+1,y))>mx){
      |                                             ^~~
Language: C++

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

int main(){
  int n
  while( cin >> n,n){
    double money = 10000;
    double b,r,t,ansi,year;
    double moto = 0;
    cin >> year;
    for(int i = 1 ; i <= n ; i++ ){
      cin >> b >> r >> t;
      if(t == 1){
	if(moto < money*(1+year*(r/100))){
	  moto = money*(1+year*(r/100));
	  ansi = i;
	}
      }else if(t == 2){
	if(moto < money*pow((1+(r/100)),year)){
	  moto = money*pow((1+(r/100)),year);
	  ansi = i;
	}
      }
    }
    cout << ansi << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: expected initializer before 'while'
    8 |   while( cin >> n,n){
      |   ^~~~~
Language: Java

import java.util.*;

class Main{
	public static void main(String args[]){
		Solve s = new Solve();
		s.solve();
	}
}

class Solve{
	Scanner in = new Scanner(System.in);

	void solve(){
		int[][] s = {{1,2,3,4},{2,-1,4,-3},{3,-4,-1,2},{4,3,-2,-1}};
		int n = in.nextInt();
		for(int k = 0; k < n; k++){
			int[] a = new int[4];
			int[] b = new int[4];
			long[] ans = new int[4];
			for(int i = 0; i < 4; i++) a[i] = in.nextInt();
			for(int i = 0; i < 4; i++) b[i] = in.nextInt();

			for(int i = 0; i < 4; i++){
				for(int j = 0; j < 4; j++){
					int t = s[i][j], d = 1;
					if(t < 0){
						t = -t;
						d = -1;
					}
					--t;
					ans[t] += (long)d * a[i] * b[j];
				}
			}

			for(int i = 0; i < 4; i++){
				if(i != 0) System.out.print(" ");
				System.out.print(ans[i]);
			}
			System.out.println();
		}
	}
	
}

Compiler output:
Main.java:19: error: incompatible types: int[] cannot be converted to long[]
			long[] ans = new int[4];
			             ^
1 error
Language: C++

int main(){
	int n;
	cin>>n;
	for(int i=0;i<n;i++){
	int a,b,c,d,e,f,g,h;
	cin>>a>>b>>c>>d>>e>>f>>g>>h;
	int w=0,x=0,y=0,z=0;
	w=(a*e)-(b*f)-(c*g)-(d*h);
	x=b*e+a*f+c*h-d*g;
	y=a*g+c*e+d*f-b*h;
	z=a*h+d*e+b*g-c*f;
	cout<<w<<" "<<x<<" "<<y<<" "<<z<<endl;
	if(i==n-1){
		int tmp;
		cin>>tmp;
		if(tmp==0)break;
	}
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:9: error: 'cin' was not declared in this scope
    3 |         cin>>n;
      |         ^~~
a.cc:12:9: error: 'cout' was not declared in this scope
   12 |         cout<<w<<" "<<x<<" "<<y<<" "<<z<<endl;
      |         ^~~~
a.cc:12:42: error: 'endl' was not declared in this scope
   12 |         cout<<w<<" "<<x<<" "<<y<<" "<<z<<endl;
      |                                          ^~~~
Language: C++

// AOJ 0241
#include <iostream>
#include <cmath>

using namespace std;

int data[4][4] = {{1, 2, 3, 4},
				  {2, -1, 4, -3},
				  {3, -4, -1, 2},
				  {4, 3, -2, -1}};

int main()
{
	int n;
	while (cin >> n, n){
		while (n--){
			int num1[4][2], num2[4][2];
			for (int i = 0; i < 4; i++){
				cin >> num1[i][0];
				num1[i][1] = i;
			}
			for (int i = 0; i < 4; i++){
				cin >> num2[i][0];
				num2[i][1] = i;
			}
			int ret[4] = {};
			for (int i = 0; i < 4; i++){
				for (int j = 0; j < 4; j++){
					int t = data[num1[i][1]][num2[j][1]];
					int tmp = num1[i][0] * num2[j][0];
					// cout << t << endl;
					if (t < 0){
						ret[abs(t) - 1] -= tmp;
					}
					else {
						ret[abs(t) - 1] += tmp;
					}
				}
			}
			for (int i = 0; i < 4; i++){
				cout << ret[i] << (i + 1 == 4 ? '\n' : ' ');
			}
		}
	}

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:29:49: error: reference to 'data' is ambiguous
   29 |                                         int t = data[num1[i][1]][num2[j][1]];
      |                                                 ^~~~
In file included from /usr/include/c++/14/string:53,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:2:
/usr/include/c++/14/bits/range_access.h:344:5: note: candidates are: 'template<class _Tp> constexpr const _Tp* std::data(initializer_list<_Tp>)'
  344 |     data(initializer_list<_Tp> __il) noexcept
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:334:5: note:                 'template<class _Tp, long unsigned int _Nm> constexpr _Tp* std::data(_Tp (&)[_Nm])'
  334 |     data(_Tp (&__array)[_Nm]) noexcept
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:323:5: note:                 'template<class _Container> constexpr decltype (__cont.data()) std::data(const _Container&)'
  323 |     data(const _Container& __cont) noexcept(noexcept(__cont.data()))
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:312:5: note:                 'template<class _Container> constexpr decltype (__cont.data()) std::data(_Container&)'
  312 |     data(_Container& __cont) noexcept(noexcept(__cont.data()))
      |     ^~~~
a.cc:7:5: note:                 'int data [4][4]'
    7 | int data[4][4] = {{1, 2, 3, 4},
      |     ^~~~
Language: C++

#include<iostream>
#include<algorithm>
#include<string>
#include<cmath>
#include<iostream>
#include<vector>

using namespace std ;

  template <typename T>
T Out(vector < T > v,int n)
{
  if(n == 1)
  {
    for(int i = 0; i < v.size(); i++)
    {
      cout << v[i] << endl ;
    }
  }
  else if(n == 2)
  {
    for(int i = 0; i < v.size(); i++)
    {
      cout << v[i] ;
    }
    cout << endl ;
  }
  else
  {
    for(int i = 0; i < v.size(); i++)
    {
      cout << v[i] << " " ;
    }
    cout << endl ;
  }
}

int main()
{
  int N ;
  vector<int> a, b, ans ;
  while(1)
  {
    cin >> N ;
    if(N == 0)
    {
      break ;
    }
    for(int h = 0; h < N ;++h)
    {
      a.resize(4) ;
      b.resize(4) ;
      ans.clear() ;
      ans.resize(4) ;
      for(int i = 0; i < 4; ++i)
      {
        cin >> a[i] ;
      }
      for(int i = 0; i < 4; ++i)
      {
        cin >> b[i] ;
      }
      for(int i = 0; i < 4;++i)
      {
        for(int j = 0; j < 4; ++j)
        {
          if(i == j && i != 0)
          {
            ans[0] -= a[i] * b[j] ;
          }
          else if(i == j && i == 0)
          {
            ans[0] += a[i] * b[j] ;
          }
          else if(i == 0)
          {
            ans[j] += a[i] * b[j] ;
          }
          else if(j == 0)
          {
            ans[i] += a[i] * b[j] ;
          }//
          else if(i == 1 && j == 2)
          {
            ans[3] += a[i] * b[j] ;
          }
          else if(i == 1 && j == 3)
          {
            ans[2] -= a[i] * b[j] ;
          }
          else if(i == 2 && j == 1)
          {
            ans[3] -= a[i] * b[j] ;
          }
          else if(i == 2 && j == 3)
          {
            ans[1] += a[i] * b[j] ;
          }
          else if(i == 3 && j == 1)
          {
            ans[2] += a[i] * b[j] ;
          }
          else if(i == 3 && j == 2)
          {
            ans[1] -= a[i] * b[j] ;
          }
        }
      }
      for(int i = 0; i < 4;++i){
        if(i){
          cout << " ";
        }
        cout << v[i];
      }
      cout << endl;
    }
  }
  return 0 ;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:113:17: error: 'v' was not declared in this scope
  113 |         cout << v[i];
      |                 ^
Language: C++

#include<stdio.h>
int main(void)
{
	int n,a,b,c,d,e,f,g,h,X[1000],Z[1000],W[1000],P[1000];
	while(1){
	scnaf("%d",&n);
	if(n==0)break;
	for(i=0;i<n;i++){
	scanf("%d %d %d %d %d %d %d %d",&a,&b,&c,&d,&e,&f,&g,&h);
		X[i]=(a*e)+(-1*f*b)+(-1*g*c)+(-1*h*d);
		Z[i]=(a*f)+(e*b)+(h*c)+(-1*g*d);
		W[i]=(a*g)+(-1*h*b)+(e*c)+(f*d);
		P[i]=(a*h)+(g*b)+(-1*f*c)+(d*e);
	 }
	for(i=0;i<n;i++){	
	printf("%d %d %d %d\n",X[i],Z[i],W[i],P[i]);
  }
  return 0;
} 

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'scnaf' was not declared in this scope; did you mean 'scanf'?
    6 |         scnaf("%d",&n);
      |         ^~~~~
      |         scanf
a.cc:8:13: error: 'i' was not declared in this scope
    8 |         for(i=0;i<n;i++){
      |             ^
a.cc:15:13: error: 'i' was not declared in this scope
   15 |         for(i=0;i<n;i++){
      |             ^
a.cc:19:2: error: expected '}' at end of input
   19 | }
      |  ^
a.cc:3:1: note: to match this '{'
    3 | {
      | ^
Language: C++

#include<stdio.h>
int main(void)
{
	int n,a,b,c,d,e,f,g,h,X[1000],Z[1000],W[1000],P[1000];
	while(1){
	scanf("%d",&n);
	if(n==0)break;
	for(i=0;i<n;i++){
	scanf("%d %d %d %d %d %d %d %d",&a,&b,&c,&d,&e,&f,&g,&h);
		X[i]=(a*e)+(-1*f*b)+(-1*g*c)+(-1*h*d);
		Z[i]=(a*f)+(e*b)+(h*c)+(-1*g*d);
		W[i]=(a*g)+(-1*h*b)+(e*c)+(f*d);
		P[i]=(a*h)+(g*b)+(-1*f*c)+(d*e);
	 }
	for(i=0;i<n;i++){	
	printf("%d %d %d %d\n",X[i],Z[i],W[i],P[i]);
  }
  }
  return 0;
} 

Compiler output:
a.cc: In function 'int main()':
a.cc:8:13: error: 'i' was not declared in this scope
    8 |         for(i=0;i<n;i++){
      |             ^
a.cc:15:13: error: 'i' was not declared in this scope
   15 |         for(i=0;i<n;i++){
      |             ^
Language: C++

#include <iostream>
using namespace std;
int main(){
  int n;
  while(cin>>n,n){
    int a,b,c,d,e,f,g,h;
    while(n--){
      cin>>a>>b>>c>>d;
      cin>>e>>f>>g>>h;????
      cout<<a*e-b*f-c*g-d*h<< " " << 
      a*f+b*e+c*h-d*g<< " " <<
      a*g-b*h+c*e+d*f<< " " << 
      a*h+b*g-c*f+d*e<< endl;
    }
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:23: error: expected primary-expression before '?' token
    9 |       cin>>e>>f>>g>>h;????
      |                       ^
a.cc:9:24: error: expected primary-expression before '?' token
    9 |       cin>>e>>f>>g>>h;????
      |                        ^
a.cc:9:25: error: expected primary-expression before '?' token
    9 |       cin>>e>>f>>g>>h;????
      |                         ^
a.cc:9:26: error: expected primary-expression before '?' token
    9 |       cin>>e>>f>>g>>h;????
      |                          ^
a.cc:13:29: error: expected ':' before ';' token
   13 |       a*h+b*g-c*f+d*e<< endl;
      |                             ^
      |                             :
a.cc:13:29: error: expected primary-expression before ';' token
a.cc:13:29: error: expected ':' before ';' token
   13 |       a*h+b*g-c*f+d*e<< endl;
      |                             ^
      |                             :
a.cc:13:29: error: expected primary-expression before ';' token
a.cc:13:29: error: expected ':' before ';' token
   13 |       a*h+b*g-c*f+d*e<< endl;
      |                             ^
      |                             :
a.cc:13:29: error: expected primary-expression before ';' token
a.cc:13:29: error: expected ':' before ';' token
   13 |       a*h+b*g-c*f+d*e<< endl;
      |                             ^
      |                             :
a.cc:13:29: error: expected primary-expression before ';' token
Language: Java

package nofill_nosubmit;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Scanner;
public class AOJ2_42 
{
	public static void main(String arg[])
	{
		Scanner in=new Scanner(System.in);
		for(;;)
		{
			int n=in.nextInt();
			String t=in.nextLine();
			ArrayList<String> AL=new ArrayList<String>();
			if(n==0)
				return;
			for(int i=0;i<n;i++)
			{
				String s[]=in.nextLine().split(" ");
				for(int j=0;j<s.length;j++)
					AL.add(s[j]);
			}
			String se=in.next();
			for(int i=0;i<AL.size();i++)
				if(se.charAt(0)!=AL.get(i).charAt(0))
				{
					AL.remove(i);
					i--;
				}
			if(AL.isEmpty())
			{
				System.out.println("NA");
				continue;
			}
			Collections.sort(AL);
			int count[]=new int[AL.size()];
			for(int i=0;i<AL.size()-1;i++)
			{
				while(i+1<AL.size()&&AL.get(i).equals(AL.get(i+1)))
				{
					count[i]++;
					AL.remove(i);
				}
			}
			ArrayList<Integer> cou=new ArrayList<Integer>();
			for(int i=0;i<count.length;i++)
				cou.add(count[i]);

			ArrayList<String> ANS=new ArrayList<String>();
			while(!AL.isEmpty())
			{
				int m=0;
				for(int j=0;j<cou.size();j++)
				{
					if(cou.get(m)<cou.get(j))
						m=j;
				}
				ANS.add(AL.get(m));
				AL.remove(m);
				cou.remove(m);
			}
			int p=0;
			for(int i=0;i<ANS.size();i++)
			{
				if(p==0)
					System.out.print(ANS.get(i));
				else
					System.out.print(" "+ANS.get(i));
				if(i>3)
					break;
				p=1;
			}
			System.out.println();
		}
	}
}

Compiler output:
Main.java:5: error: class AOJ2_42 is public, should be declared in a file named AOJ2_42.java
public class AOJ2_42 
       ^
1 error
Language: C

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<sstream>
using namespace std;
#define Min(x,y) ((x<y)?x:y)
typedef struct word{
	int n;
	char s[25];
}WORD;
WORD x[30][1000];
int comp(const void *p,const void *q){
	WORD *a=(WORD*)p,*b=(WORD*)q;
	if(a->n==b->n)return strcmp(a->s,b->s);
	else return b->n - a->n;
}

int main(){
	int i,j,n,wn[30],a;
	char sen[1030],str[25],k;
	
	while(1){
		scanf("%d\n",&n);
		if(n==0)break;
		memset(wn,0,sizeof(wn));
		while(n--){
			memset(sen,0,sizeof(sen));
			memset(str,0,sizeof(str));
			fgets(sen,1025,stdin);
			//printf("A:%s",sen);
			istringstream ss(sen);
			while(ss>>str){
				//printf("%s\n",str);
				a=str[0]-'a';
				for(i=0;i<wn[a];i++){
					if(strcmp(str,x[a][i].s)==0){
						x[a][i].n++;
						break;
					}
				}
				if(i==wn[a]){
					x[a][wn[a]].n=1;
					strcpy(x[a][wn[a]++].s,str);
					memset(str,0,sizeof(str));
				}
			}
			/*while(sscanf(sen,"%s",str)!='\0'){
				printf("%s\n",str);
				a=str[0]-'a';
				strcpy(x[a][wn[a]++].s,str);
				memset(str,0,sizeof(str));
			}*/
		}
		scanf("%c\n",&k);
		a=k-'a';
		if(wn[a]==0){
			printf("NA\n");
			continue;
		}
		qsort(x[a],wn[a],sizeof(WORD),comp);
		n=Min(5,wn[a]);
		for(i=0;i<n;i++){
			printf("%s%s",x[a][i].s,(i==n-1)?"\n":" ");
		}
	}
	
	return 0;
}

Compiler output:
main.c:1:9: fatal error: cstdio: No such file or directory
    1 | #include<cstdio>
      |         ^~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
#include<sstream>
#include<vector>
#include<map>
using namespace std;
typedef pair<int,string> P;
vector<string> t;
vector<P> u;
int n,c;
string str,tmp;

int main(){
  while(cin>>n&&n){
    t.clear();
    u.clear();
    cin.ignore();
    for(int i=0;i<n;i++){
      getline(cin,str);
      stringstream ss(str);
      while(ss>>tmp){
	t.push_back(tmp);
      }
    }
    sort(t.begin(),t.end());
    c=1;
    for(int i=1;i<(int)t.size();i++){
      if(t[i-1]==t[i])c++;
      else{
	c=1;
	u.push_back(P(c,t[i-1]));
      }
    }
    u.push_back(P(c,t[t.size()-1]));
    sort(u.begin(),u.end());
    cin>>str;
    int len=str.size();
    c=0;
    for(int i=0;i<(int)u.size();i++){
      if(len>(int)u[i].second.size())continue;
      if(str==u[i].second.substr(0,len)){
	if(c)cout<<' ';
	cout<<u[i].second;
	c++;
      }
      if(c==5)break;
    }
    if(c==0)cout<<"NA"<<endl;
    else cout<<endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:5: error: 'sort' was not declared in this scope; did you mean 'short'?
   24 |     sort(t.begin(),t.end());
      |     ^~~~
      |     short
Language: C++

#include <iostream>
#include <vector>
#include <string>
#include <cstdio>
#include <map>
using namespace std;

int main(){
  
  int n;
  while(cin >> n, n){
    char c;
    vector <string> v;
    map<string, int> d;
    for(int i = 0; i < n; i++){
      bool first = false;
      while(true){
	string s;
	if(first && getchar() == '\n') break;
	first = true;
	cin >> s;
	if(!d[s]) v.push_back(s);
	d[s]--;
      }
    }

    cin >> c;
    vector <pair<int, string> > ans;
    for(int i = 0; i < v.size(); i++){
      if(v[i][0] == c)
	ans.push_back(make_pair(d[v[i]], v[i]));
    }
    sort(ans.begin(), ans.end());
    
    if(!ans.size()) cout << "NA" << endl;
    for(int i = 0; i < ans.size() && i < 5; i++)
      printf("%s%c", ans[i].second.c_str(), (i == ans.size()-1 || i == 4 ? '\n' : ' '));
  }

}

Compiler output:
a.cc: In function 'int main()':
a.cc:33:5: error: 'sort' was not declared in this scope; did you mean 'short'?
   33 |     sort(ans.begin(), ans.end());
      |     ^~~~
      |     short
Language: C++

#include<iostream>
#include<string>
#include<sstream>
#include<map>
#include<vector>
using namespace std;
typedef pair<int,string> P;


int main(){
	int n;
	while(1){
		cin >> n;
		if(n == 0) break;
		string word[1025];
		int cou = 0;

		for(int i=0;i<n;i++){
			string str;
			cin.ignore();
			getline(cin,str);
			stringstream ss(str);
			while(!ss.eof()){
				ss >> word[cou];
				cou++;
			}
		}
		char key; cin >> key;
		map<string,int> count;
		for(int i=0;i<cou;i++){
			if(word[i][0] == key){
				count[word[i]]--;
			}
		}
		P ans[1024];
		int num = 0;
		for(int i=0;i<cou;i++){
			if(word[i][0] == key && count[word[i]] != 0){
				P p;
				p.first = count[word[i]];
				p.second = word[i];
				ans[num] = p;
				num++;
				count[word[i]] = 0;
			}
		}
		sort(ans,ans+num);
		bool flg = false;
		for(int i=0;i<5;i++){
			if(num == 0) cout << "NA" << endl;
			if(i == num) break;
			if(flg) cout << " ";
			cout << ans[i].second;
			flg = true;
		}
		cout << endl;
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:47:17: error: 'sort' was not declared in this scope; did you mean 'short'?
   47 |                 sort(ans,ans+num);
      |                 ^~~~
      |                 short
Language: C++

#include <iostream>
#include <cstdio>
#include <vector>
#include <string>
#include <map>
#include <algorithm>

using namespace std;
typedef pair<int, string> P;


void solve()
{
	int n;
	while (scanf_s("%d\n", &n), n)
	{
		string str;
		map<string, int> Map;
		while (n--)
		{
			getline(cin, str);
			str += " ";
			string s;
			for (int i = 0; i < str.size(); ++i)
			{
				if (str[i] == ' ')
				{
					Map[s]++;
					s.clear();
				}
				else
				{
					s += str[i];
				}
			}
		}
		char c;
		cin >> c;
		vector<P> word;
		map<string, int>::iterator it = Map.begin();
		while (it != Map.end())
		{
			if (it->first[0] == c)
			{
				word.push_back(P(it->second, it->first));
			}
			++it;
		}
		if (word.empty())
		{
			cout << "NA" << endl;
			continue;
		}
		int displaySize = min((int)word.size(), 5);
		bool isFirst = true;
		for (int i = 0; i < displaySize; ++i)
		{
			if (!isFirst)
			{
				cout << " ";
			}
			isFirst = false;
			cout << word[i].second;
		}
		cout << endl;
	}
}

int main()
{
	solve();
	return(0);
}

Compiler output:
a.cc: In function 'void solve()':
a.cc:15:16: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
   15 |         while (scanf_s("%d\n", &n), n)
      |                ^~~~~~~
      |                scanf
Language: C++

#include <iostream>
#include <cstdio>
#include <vector>
#include <string>
#include <map>
#include <algorithm>
#include <functional>

using namespace std;
typedef pair<int, string> P;


void solve()
{
	int n;
	while (scanf_s("%d\n", &n), n)
	{
		string str;
		map<string, int> Map;
		while (n--)
		{
			getline(cin, str);
			str += " ";
			string s;
			for (int i = 0; i < str.size(); ++i)
			{
				if (str[i] == ' ')
				{
					Map[s]++;
					s.clear();
				}
				else
				{
					s += str[i];
				}
			}
		}
		char c;
		cin >> c;
		vector<P> word;
		map<string, int>::iterator it = Map.begin();
		while (it != Map.end())
		{
			if (it->first[0] == c)
			{
				word.push_back(P(-it->second, it->first));
			}
			++it;
		}
		if (word.empty())
		{
			cout << "NA" << endl;
			continue;
		}
		sort(word.begin(), word.end());
		int displaySize = min((int)word.size(), 5);
		bool isFirst = true;
		for (int i = 0; i < displaySize; ++i)
		{
			if (!isFirst)
			{
				cout << " ";
			}
			isFirst = false;
			cout << word[i].second;
		}
		cout << endl;
	}
}

int main()
{
	solve();
	return(0);
}

Compiler output:
a.cc: In function 'void solve()':
a.cc:16:16: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
   16 |         while (scanf_s("%d\n", &n), n)
      |                ^~~~~~~
      |                scanf
Language: C++

#include <string>
#include <vector>
#include <iostream>
using namespace std;
int n; string s; char c;
vector<string> parse(string str) {
	vector<string> ret = 0; string t;
	for(int i = 0; i < str.size(); i++) {
		if(str[i] == ' ') ret.push_back(t), t = "";
		else t += str[i];
	}
	return ret;
}
int main() {
	while(cin >> n, n) {
		vector<string> r;
		for(int i = 0; i < n; i++) {
			s = ""; getline(cin, s));
			vector<string> v = parse(s);
			r.insert(r.end(), v.begin(), v.end());
		}
		sort(r.begin(), r.end());
		for(int i = 0; i < r.size() && i < 5; i++) {
			if(i) cout << ' ';
			cout << r[i];
		}
		cout << endl;
	}
}

Compiler output:
a.cc: In function 'std::vector<std::__cxx11::basic_string<char> > parse(std::string)':
a.cc:7:30: error: conversion from 'int' to non-scalar type 'std::vector<std::__cxx11::basic_string<char> >' requested
    7 |         vector<string> ret = 0; string t;
      |                              ^
a.cc: In function 'int main()':
a.cc:18:48: error: expected ';' before ')' token
   18 |                         s = ""; getline(cin, s));
      |                                                ^
      |                                                ;
a.cc:22:17: error: 'sort' was not declared in this scope; did you mean 'short'?
   22 |                 sort(r.begin(), r.end());
      |                 ^~~~
      |                 short
Language: C++

#include<bits/stdc++.h>
using namespace std;
string S;
int main(){
	int n;
	while(true){
		cin>>n;vector<string>vec,w;
		for(int i=0;i<n;i++){
			S="";
			while(S=""){
				getline(cin,S);
			}
			S+=" ";string T;
			for(int i=0;i<S.size();i++){
				if(S[i]==' '){vec.push_back(T);T="";}
				else{T+=S[i];}
			}
		}
		char c;cin>>c;
		sort(vec.begin(),vec.end());
		if(vec[0][0]==c){w.push_back(vec[0]);}
		for(int i=1;i<vec.size();i++){
			if(vec[i][0]==c && vec[i-1]!=vec[i]){
				w.push_back(vec[i]);
			}
		}
		for(int i=0;i<w.size();i++){
			if(i)cout<<' ';
			cout<<w[i];
		}
		if(w.size()==0){cout<<"NA";}
		cout<<endl;
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:32: error: could not convert 'S.std::__cxx11::basic_string<char>::operator=(((const char*)""))' from 'std::__cxx11::basic_string<char>' to 'bool'
   10 |                         while(S=""){
      |                               ~^~~
      |                                |
      |                                std::__cxx11::basic_string<char>
Language: C++

#include <iostream>
#include <sstream>
#include <string>
#include <map>
using namespace std;

typedef struct { string s; int n; } S;

int main(void)
{
	int n, m, f;
	string s;
	char d;

	while (cin >> n && n)
	{
		map<string, int> w;
		getline(cin, s);
		for (int i = m = 0; i < n; ++i)	
		{
			getline(cin, s);
			istringstream iss(s);
			string k;
			while (iss >> k)
			{
				if (w.find(k) == w.end())	w[k] = 1, ++m;
				else	++w[k];
			}
		}
		cin >> d;
		S* v = new S[m];
		int i = f = 0;
		for (map<string, int>::iterator itr = w.begin(); itr != w.end(); ++itr, ++i)
		{
			const char *c = itr->first.c_str();
			if (c[0] == d)	v[i].s = itr->first, v[i].n = itr->second, f = 1;
		}
		if (f)
		{
			for (int i = 0; i < m; ++i)
			{
				for (int j = i+1; j < m; j++)
				{
					if (v[i].n < v[j].n)	swap(v[i], v[j]);
				}
			}
			for (int i = 0; i < 5; ++i)
			{
				if (i > 0)	cout << " ";
				cout << v[i].s;
			}
		}
		delete v;
		else	cout << "NA";
		cout << endl;
	}

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:54:17: error: 'else' without a previous 'if'
   54 |                 else    cout << "NA";
      |                 ^~~~