Submission #66382363

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
const long long  INF = 1e12;
typedef long long ll;
const ll MOD=(ll) 998244353;
#define P pair
#define S second
#define F first
#define pb push_back
#define V vector
#define all(v) v.begin(),v.end()
void file() {
    freopen("input.txt.txt", "r", stdin);
    freopen("output.txt.txt", "w", stdout);
}
void solve(){
    int n;
    cin>>n;
    string s;
    cin>>s;
    int cnt1=0,c1=0,c0=0;
    for(int i=0;i<n;i++){
        if(s[i]=='1')cnt1++;
    }
    int mind=0;
    int ans=cnt1;
    for(int i=0;i<n;i++){
        if(s[i]=='0')c0++;else c1++;
        mind=min(mind,-c0+c1);
        ans=min(ans,cnt1+c0-c1+mind);
    }
    cout<<ans<<endl;
}
int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    //file();
    int t;
    cin>>t;
    while(t--) {
        solve();
    }
    return 0;
}

Submission Info

Compile Error

Main.cpp: In function ‘void file()’:
Main.cpp:13:12: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   13 |     freopen("input.txt.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:14:12: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   14 |     freopen("output.txt.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Judge Result