program testing

Question

#include <iostream>
#include <string>
#include <math.h>
using namespace std;

int main() {
// your code goes here
int q;
cin>>q;
while(q--){
int n;
cin>>n;
string s1,s2;
cin>>s1>>s2;
int count1=0,count2=0,zero=0;
int both=0;
for(int i=0;i<n;i++){
if(s1[i]=='1' && s2[i]=='1'){
both++;
}
else if(s1[i]=='1'){
count1++;
}
else if(s2[i]=='1'){
count2++;
}
else{
zero++;
}

}
int minu=n;
int count=min(count1,count2);
minu-=count*2;
minu-=both;
int all=min(both,minu);
all+=count;
cout<<all<<"\n";
}
return 0;
}
This program is running correct and according to all test cases I checked it is correct but giving wrong answer when I submit. Please can anyone check for inputs.
This is the question:
https://www.codechef.com/COOK132C/problems/TEAMFOR

for inputs:
4
3
101
001
4
1010
0110
3
000
110
2
10
11
its correct
output:
1
2
0
1

Answer 1

I found multiple wrong test cases:

2
11
11
-> 0 instead of 1

4
1110
1101
-> 1 instead of 2

6
111110
111001
-> 2 instead of 3

6
111100
111100
-> 2 instead of 3

I'd think you are not correctly accounting for the number of pairs formed from students who know both languages. If the number of such students exceeds those who know neither language and the leftover ones knowing one language, they will have to form pairs with one another after all.

Answer 2

Shadow Martin Taylor