제출 #310918

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
310918	2020-10-08 13:49:18	mohamedsobhi777	세 명의 친구들 (BOI14_friends)	C++14	100 / 100	26 ms	15096 KiB

friends

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#include<bits/stdc++.h>
#pragma GCC optimize("-Ofast")
//#pragma GCC optimize("trapv")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,sse4.2,popcnt,abm,mmx,avx2,tune=native")
#pragma GCC optimize("-ffast-math")
#pragma GCC optimize("-funroll-loops")
#define I inline void 
#define S struct 
#define vi vector<int> 
#define vii vector<pair<int,int>>
#define pii pair<int,int>
#define pll pair<ll,ll>
using namespace std ; 
using ll = long long ; 
using ld = long double ; 
const int N = 2e6 + 7 , mod = 1e9 + 7 ; 
const ll inf = 2e18 ; 
// How interesting!
int n ; 
string s; 
int answer = 0 ; 
int pref1[N] , pref2[N] ; 
 
 
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컴파일 시 표준 에러 (stderr) 메시지

friends.cpp: In function 'int main()':
friends.cpp:41:13: warning: unused variable 'ans' [-Wunused-variable]
   41 |         int ans = -1 ;
      |             ^~~

• Subtask 1: 35 / 35
• Subtask 2: 65 / 65