제출 #34589

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
34589		5ak0	Utrka (COCI14_utrka)	C++14	0 / 80	0 ms	2020 KiB

utrka

/*
ID: 5ak0
PROG:
LANG: C++11
*/

#include <bits/stdc++.h>
#define fr first
#define sc second
#define pb push_back
#define mpr make_pair

using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
const int INF = 1e9 + 7;

int n;
string s;
map <string, bool> mp;

int main(){
    #ifndef SAKO
    freopen("utrka.in", "r", stdin);
    freopen("utrka.out", "w", stdout);
    #endif // SAKO
    ios_base::sync_with_stdio(0);

    cin >> n;
    for (int i = 1; i <= n; ++i){
        cin >> s;
        mp[s] = 1;
    }
    for (int i = 1; i < n; ++i){
        cin >> s;
        mp[s] = 0;
    }
    for (auto x : mp)
        if (mp[x.first] == 1)
            return !(cout << x.first);

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

utrka.cpp: In function 'int main()':
utrka.cpp:25:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     freopen("utrka.in", "r", stdin);
                                    ^
utrka.cpp:26:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     freopen("utrka.out", "w", stdout);
                                      ^

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