제출 #300075

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
300075		theshadow_04	Utrka (COCI14_utrka)	C++14	80 / 80	240 ms	14712 KiB

utrka

// VU TRUONG AN
#include <bits/stdc++.h>
#define F first
#define S second
#define MOD 1000000007
#define pb push_back
#define bit(x,p) ((x>>p) & 1)
#define ll long long
#define Task "UTRKA"
using namespace std;

const int base = 100003;
const int maxn = 100005;

string s[maxn];
int n;
map<string,int> M;

int main(){
    ios_base::sync_with_stdio(0);
    cout.tie(0); cin.tie(0);
	if(fopen(Task".inp","r")){
		freopen(Task".inp","r",stdin);
		freopen(Task".out","w",stdout);
	}
    cin >> n;
    for(int i = 1;i <= n;++i) cin >> s[i];
    for(int i = 1;i < n;++i){
        string a;
        cin >> a;
        M[a] ++;
    }
    for(int i = 1;i <= n;++i){
        if(!M[s[i]]){
            cout << s[i];
            return 0;
        }
        M[s[i]]--;
    }
}

컴파일 시 표준 에러 (stderr) 메시지

utrka.cpp: In function 'int main()':
utrka.cpp:23:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   23 |   freopen(Task".inp","r",stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
utrka.cpp:24:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   24 |   freopen(Task".out","w",stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 80 / 80