#include<stdio.h>
#include<stdlib.h>
int a[21],b[21],n,m;
void dfs(int x,int sum,int state,int k,int num)
{
int i;
if(x>n)
{
cout << "YES";
exit(0);
}
if(sum==0)
{
dfs(x+1,a[x+1],state,0,num);
return;
}
for(i=k;i<m;i++)
{
if(m-num-1<n-x) break;
if((state>>i)&1 || sum<b[i]) continue;
dfs(x,sum-b[i],state|(1<<i),i+1,num+1);
}
}
int main()
{
int i;
cin >> n >> m;
for(i=1;i<=n;i++) cin >> a[i];
for(i=1;i<=m;i++) cin >> b[i];
dfs(1,a[1],0,1,0);
cout << "NO";
return 0;
}
Compilation message
bank.cpp: In function 'void dfs(int, int, int, int, int)':
bank.cpp:9:9: error: 'cout' was not declared in this scope
cout << "YES";
^~~~
bank.cpp: In function 'int main()':
bank.cpp:27:5: error: 'cin' was not declared in this scope
cin >> n >> m;
^~~
bank.cpp:27:5: note: suggested alternative: 'main'
cin >> n >> m;
^~~
main
bank.cpp:31:5: error: 'cout' was not declared in this scope
cout << "NO";
^~~~
