Submission #872554

#	Time	Username	Problem	Language	Result	Execution time	Memory
872554		vjudge1	Sure Bet (CEOI17_sure)	C++17	0 / 100	0 ms	348 KiB

sure

//author: Ahmet Alp Orakci
#include <bits/stdc++.h>
using namespace std;
using i64 = long long;
#define d64 double

#define ONLINE_JUDGE
void solve() {
    int n;
    scanf("%d", &n);

    pair <d64, d64> arr[n];
    for(auto &[a, b] : arr) {
        scanf("%lf %lf", &a, &b);
    }

    d64 ans = -1E9;
    for(int mask = 0; mask < (1 << n); mask++) {
        for(int mmask = 0; mmask < (1 << n); mmask++) {
            d64 fir = 0, sec = 0;
            for(int i = 0; i < n; i++) {
                if(mask & (1 << i)) {
                    if(mmask & (1 << i))
                        fir += arr[i].first;
                    else
                        sec += arr[i].second;
                }
            }

            ans = max(ans, min(fir, sec) - __builtin_popcount(mask));
        }
    }

    printf("%4lf", double(ans));
    
    return;
}

signed main() {
    #ifndef ONLINE_JUDGE
        freopen(".in", "r", stdin);
        freopen(".out", "w", stdout);
    #endif

    int t = 1; //cin >> t;
    for(int i = 1; i <= t; i++) {
        solve();
    }

    return 0;
}

Compilation message (stderr)

sure.cpp: In function 'void solve()':
sure.cpp:10:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
sure.cpp:14:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |         scanf("%lf %lf", &a, &b);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 40
• Subtask 3: 0 / 40