제출 #933424

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
933424		thunopro	Memory (IOI10_memory)	C++14	0 / 100	0 ms	448 KiB

memory

#include<bits/stdc++.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 ; 
}

#include "grader.h"
#include "memory.h"

int a [maxn] ;
int pos [maxn] ; 
bool used [maxn] ; 
void play ()
{
 
	vii can_get ; 
	while ( true ) 
	{
		bool ok = false ; 
		int x = -1 , y = -1 ; 
		for ( int i = 1 ; i <= 50 ; i ++ ) 
		{
			if ( used [i] ) continue ; 
			used [i] = true ; 
			x = i ; 
			break ; 
		}
		a [x] = faceup (x) - 'A' ; 
		if ( pos [a[x]] != 0 ) 
		{
			faceup (pos[a[x]]) ;
			break ; 
		}
		pos[a[x]] = x ;
		for ( int i = 1 ; i <= 50 ; i ++ ) 
		{
			if ( used [i] ) continue ; 
			used [i] = true ; 
			y = i ; 
			break ; 
		}
		a [y] = faceup (y) - 'A' ; 
		if ( a [x] == a [y] ) 
		{
		}
		else if ( pos[a[y]] ) 
		{
			can_get.pb({pos[a[y]],y}) ; 
		}
		else pos[a[y]] = y ; 
		if ( x == -1 ) break ; 
	}
	for ( auto x : can_get ) faceup (x.fi) , faceup (x.se) ; 
	return ; 
}

컴파일 시 표준 에러 (stderr) 메시지

memory.cpp: In function 'void play()':
memory.cpp:54:8: warning: unused variable 'ok' [-Wunused-variable]
   54 |   bool ok = false ;
      |        ^~
memory.cpp: In function 'void rf()':
memory.cpp:31:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |  freopen ("bai1.inp","r",stdin) ;
      |  ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

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