Submission #1274259

#	Time	Username	Problem	Language	Result	Execution time	Memory
1274259		sakka	Mađioničar (COI22_madionicar)	C++20	100 / 100	493 ms	444 KiB

Main

#include<bits/stdc++.h>
#define ll long long
#define fi first
#define sec second
#define pb push_back
#define pll pair<long long, long long>
using namespace std;
void freop(){
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
}
const ll INF = 1e18, mod = 1e9+7;
ll n, x;

void solve(){
    cin >> n;

    ll ev = 0, od = 1;
    for(int i=2; i<=n; i++){
        int ans;
        if(i-ev-1 >= 1){
            cout << "? " << i-ev-1 << " " << i << endl; cin >> ans;
            if(ans) ev += 2;
        }
        
        if(i-od-1 >= 1){
            cout << "? " << i-od-1 << " " << i << endl; cin >> ans;
            if(ans) od += 2;
        }
    }
    cout << "! " << max(ev, od) << endl;
}

int main(){
    ios_base :: sync_with_stdio(0); cin.tie(0); cout.tie(0);
    // freop();
    solve();
}   

Compilation message (stderr)

Main.cpp: In function 'void freop()':
Main.cpp:9:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |     freopen("input.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:10:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |     freopen("output.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 13 / 13
• Subtask 2: 25 / 25
• Subtask 3: 25 / 25
• Subtask 4: 37 / 37