제출 #708982

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
708982		vjudge1	Akcija (COCI15_akcija)	C++17	0 / 80	186 ms	47716 KiB

akcija

#include <bits/stdc++.h>
#define ll long long
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
#define sz size()
using namespace std;
int main() {
    #ifndef ONLINE_JUDGE
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    #endif
    ll n;
    cin>>n;
    ll a[n],s=0,x=0;
    for(int i=0;i<n;i++){cin>>a[i];s+=a[i];}
    sort(a,a+n);
    reverse(a,a+n);
    for(int i=2;i<n;i+=3)x+=a[i];
    cout<<s-x;
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

akcija.cpp: In function 'int main()':
akcija.cpp:11:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |         freopen("input.txt", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
akcija.cpp:12:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |         freopen("output.txt", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

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