problem: 310 A Case of Zeroes and Ones sub id: 128701541 code :

include

using namespace std; int main() { int n; int c=0; cin>>n;

char a[n];
for(int i=0;i<n;i++)
{
    cin>>a[i];
}
for(int i=0;i<n;i++)
{
    if(a[i]=='0')
    {
        c++;
    }
}
int val=n-c*2;
int res=abs(val);
cout<<res;

}