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;
}