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2 years ago
#include<bits/stdc++.h>
using namespace std;
/*
֪ʶ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֺ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
<EFBFBD>ĵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݲο<EFBFBD><EFBFBD><EFBFBD>
https://www.cnblogs.com/aiguona/p/9218754.html
*/
int n, k, a[22], b[22];
bool dfs(int x, int sum) //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ұ<EFBFBD><D2B1><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ɵý<C9B5>
{
if (sum > k)
return false;
if (x == n)
return sum == k; //<2F><><EFBFBD><EFBFBD>ǰn<C7B0><6E><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ˣ<EFBFBD><CBA3><EFBFBD><EFBFBD><EFBFBD>sum=k<>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD><EFBFBD>
if (dfs(x + 1, sum)) {
b[x] = 0; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>a[x]<5D><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ0<CEAA><30>
return true;
}
if (dfs(x + 1, sum + a[x])) {
b[x] = 1; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>a[x]<5D><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ1<CEAA><31>
return true;
}
return false;
}
int main() {
while (scanf("%d%d", &n, &k) != EOF) {
for (int i = 0; i < n; i++)
scanf("%d", &a[i]);
if (dfs(0, 0)) {
printf("YES\n");
for (int i = 0; i < n; i++)
if (b[i])
printf("%d ", a[i]);
printf("\n");
} else
printf("NO\n");
}
return 0;
}