Submission #361579

#	Time	Username	Problem	Language	Result	Execution time	Memory
361579		shahriarkhan	Bank (IZhO14_bank)	C++14	27 / 100	3 ms	1408 KiB

bank

#include<bits/stdc++.h>
using namespace std ;

int main()
{
    int n , m ;
    scanf("%d%d",&n,&m) ;
    int a[n+1] , b[m+1] , sum[1<<m] , log[1<<m] , dp[n+1][1<<m] ;
    for(int i = 0 ; i < m ; ++i) log[1<<i] = i ;
    for(int i = 1 ; i <= n ; ++i) scanf("%d",&a[i]) ;
    for(int i = 1 ; i <= m ; ++i) scanf("%d",&b[i]) ;
    vector<int> pos[n+1] ;
    for(int i = 1 ; i < (1<<m) ; ++i)
    {
        sum[i] = sum[i - (i & -i)] + b[log[i & -i]+1] ;
        for(int j = 1 ; j <= n ; ++j)
        {
            if(a[j]==sum[i]) pos[j].push_back(i) ;
        }
    }
    for(int i = 0 ; i <= n ; ++i)
    {
        for(int j = 0 ; j < (1<<m) ; ++j)
        {
            dp[i][j] = 0 ;
        }
    }
    dp[0][0] = 1 ;
    for(int i = 1 ; i <= n ; ++i)
    {
        for(int j = 1 ; j < (1<<m) ; ++j)
        {
            for(int k : pos[i])
            {
                if((j&k)!=k) continue ;
                dp[i][j] = dp[i-1][j^k] ;
                if(dp[i][j]) break ;
            }
        }
    }
    for(int i = 1 ; i < (1<<m) ; ++i)
    {
        if(dp[n][i])
        {
            puts("YES") ;
            return 0 ;
        }
    }
    puts("NO") ;
    return 0 ;
}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:7:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    7 |     scanf("%d%d",&n,&m) ;
      |     ~~~~~^~~~~~~~~~~~~~
bank.cpp:10:40: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   10 |     for(int i = 1 ; i <= n ; ++i) scanf("%d",&a[i]) ;
      |                                   ~~~~~^~~~~~~~~~~~
bank.cpp:11:40: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   11 |     for(int i = 1 ; i <= m ; ++i) scanf("%d",&b[i]) ;
      |                                   ~~~~~^~~~~~~~~~~~

• Subtask 1: 0 / 19
• Subtask 2: 0 / 25
• Subtask 3: 27 / 27
• Subtask 4: 0 / 29