Submission #80907

#	Time	Username	Problem	Language	Result	Execution time	Memory
80907		farukkastamonuda	Bank (IZhO14_bank)	C++14	100 / 100	196 ms	18812 KiB

bank

#include <bits/stdc++.h>
#define fi first
#define se second
#define lo long long 
#define inf 1000000000
#define md 1000000007
#define li 2005
#define mpt make_pair
#define pb push_back
using namespace std;
int n, m, A[22], B[22], sum[(1 << 20) + 5];
vector<int> v[22];
bool dp[22][(1 << 20) + 5];
void solve(int node, int msk){
	if(node == n + 1){
		printf("YES\n");
		exit(0);
	}
	if(dp[node][msk] == true) return ;
	dp[node][msk]=true; 
	for(int i = 0; i < (int)v[node].size(); i ++){
		if(! (msk & v[node][i]) ) solve(node + 1, msk | v[node][i]); 
	}
}
int main(){
	scanf("%d %d", &n, &m);
	for(int i = 1; i <= n; i ++){
		scanf("%d", &A[i]);
	}
	for(int i = 1; i <= m; i ++){
		scanf("%d", &B[i]);
	}
	for(int i = 1; i < (1 << m) ; i ++){
		for(int j = 0; j < m; j ++){
			if(i&(1 << j)){
				sum[i] = sum[i - (1 << j)] + B[j + 1];
				break;
			}
		}
	}
	for(int i = 1; i <= n; i ++){
		for(int j = 0; j < (1 << m) ; j ++){
			if(A[i] == sum[j]){
				v[i].pb(j);
			}
		}
	}
	solve(1, 0);
	printf("NO\n");
	return 0;
}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:26:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~~
bank.cpp:28:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &A[i]);
   ~~~~~^~~~~~~~~~~~~
bank.cpp:31:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &B[i]);
   ~~~~~^~~~~~~~~~~~~

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