제출 #931659

#제출 시각아이디문제언어결과실행 시간메모리
931659thunoproUnscrambling a Messy Bug (IOI16_messy)C++14
20 / 100
1 ms600 KiB
#include<bits/stdc++.h> #include "messy.h" using namespace std ; #define maxn 200009 #define ll long long #define pb push_back #define fi first #define se second #define left id<<1 #define right id<<1|1 #define re exit(0); #define _lower(x) lower_bound(v.begin(),v.end(),x)-v.begin()+1 const int mod = 1e9+7 ; const int INF = 1e9 ; typedef vector<int> vi ; typedef pair<int,int> pii ; typedef vector<pii> vii ; template < typename T > void chkmin ( T &a , T b ) { if ( a > b ) a = b ; } template < typename T > void chkmax ( T &a , T b ) { if ( a < b ) a = b ; } void add ( int &a , int b ) { a += b ; if ( a >= mod ) a -= mod ; if ( a < 0 ) a += mod ; } void rf () { freopen ("bai1.inp","r",stdin) ; } int _pow ( int a , int n ) { if ( n == 0 ) return 1 ; int res = _pow (a,n/2) ; if ( n % 2 ) return 1ll*res*res%mod*a%mod ; else return 1ll*res*res%mod ; } vi restore_permutation ( int n , int w , int r ) { vi result(n) ; for ( int i = 1 ; i <= n ; i ++ ) { string string_add = "" ; for ( int j = 1 ; j <= n ; j ++ ) { if ( j <= i ) string_add += char ('0') ; else string_add += char ('1') ; } add_element (string_add) ; } compile_set () ; string res (n,'1') ; for ( int i = 0 ; i < n ; i ++ ) { for ( int j = 0 ; j < n ; j ++ ) { if ( res [j] == '0' ) continue ; res [j] = '0' ; if (check_element(res)) { result [i] = j ; break ; } res [j] = '1' ; } } return result ; }

컴파일 시 표준 에러 (stderr) 메시지

messy.cpp: In function 'void rf()':
messy.cpp:32:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |  freopen ("bai1.inp","r",stdin) ;
      |  ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
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