Submission #68556

#	Time	Username	Problem	Language	Result	Execution time	Memory
68556		hamzqq9	은행 (IZhO14_bank)	C++14	100 / 100	194 ms	18940 KiB

bank

#include<bits/stdc++.h>
#define st first
#define nd second
#define pb push_back
#define ppb pop_back
#define umax(x,y) x=max(x,y)
#define umin(x,y) x=min(x,y)
#define ll long long
#define ii pair<int,int>
#define iii pair<int,ii>
#define sz(x) ((int) x.size())
#define orta ((bas+son)>>1)
#define all(x) x.begin(),x.end()
#define dbgs(x) cerr<<(#x)<<" --> "<<(x)<<" "
#define dbg(x) cerr<<(#x)<<" --> "<<(x)<<endl;getchar()
#define pw(x) (1<<(x))
#define inf 100000000
#define MOD 1000000007
#define N 400005
#define MAX 10000006
#define LOG 30
#define KOK 200
using namespace std;

int n,m;
int a[21],b[21],sum[pw(21)];
bool vis[21][pw(20)];
vector<int> okey[21];

void dfs(int now,int mask) {

	if(now==n) {

		printf("YES");

		exit(0);

	}

	if(vis[now][mask]) return ;

	vis[now][mask]=1;

	for(int i:okey[now]) {

		if(mask&i) continue ;

		dfs(now+1,mask|i);

	}

}

int main() {

//	freopen("input.txt","r",stdin);

	scanf("%d %d",&n,&m);

	for(int i=0;i<n;i++) {

		scanf("%d",&a[i]);

	}

	for(int i=0;i<m;i++) {

		scanf("%d",&b[i]);

	}

	for(int i=1;i<pw(m);i++) {

		for(int j=0;j<m;j++) {

			if(i&pw(j)) {

				sum[i]=sum[i-pw(j)]+b[j];

				break ;

			}

		}

	}

	for(int i=0;i<n;i++) {

		for(int j=0;j<pw(m);j++) {

			if(sum[j]==a[i]) {

				okey[i].pb(j);

			}

		}
	
	}

	dfs(0,0);

	printf("NO");

}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:58:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&n,&m);
  ~~~~~^~~~~~~~~~~~~~~
bank.cpp:62:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&a[i]);
   ~~~~~^~~~~~~~~~~~
bank.cpp:68:8: 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