제출 #89913

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
89913	2018-12-19 04:32:10	psmao	Preokret (COCI18_preokret)	C++14	50 / 50	23 ms	604 KiB

preokret

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#include <bits/stdc++.h>
using namespace std;
#define fo(i,s,t) for(int i = s; i <= t; ++ i)
#define fd(i,s,t) for(int i = s; i >= t; -- i)
#define bf(i,s) for(int i = head[s]; i; i = e[i].next)
#define mp make_pair
#define fi first
#define se second
#define pii pair<int,int>
#define pb push_back
#define VI vector<int>
#define sf scanf
#define pf printf
#define fp freopen
#define SZ(x) ((int)(x).size())
#ifdef MPS
#define D(x...) printf(x)
#else
#define D(x...)
#endif
typedef long long ll;
typedef double db;
typedef unsigned long long ull;
const int inf = 1<<30;
const ll INF = 1ll<<60;
const db Inf = 1e20;
const db eps = 1e-9;
void gmax(int &a,int b){a = (a > b ? a : b);}
 
 
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컴파일 시 표준 에러 (stderr) 메시지

preokret.cpp: In function 'int main()':
preokret.cpp:43:4: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  sf("%d",&n);
    ^
preokret.cpp:44:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  fo(i,1,n) {int x; sf("%d",&x); a[x] ++; b[x] ++;}
                      ^
preokret.cpp:45:4: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  sf("%d",&n);
    ^
preokret.cpp:46:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  fo(i,1,n) {int x; sf("%d",&x); a[x] -- ; b[x] ++;}
                      ^

• Subtask 1: 50 / 50