#include <bits//stdc++.h>
using namespace std;
const int mod=1e9+7;
int n;
long long m,a[50];
vector <long long> v1,v2;
void bt (int pos,int x,long long sum)
{
if (pos==x)
{
if (x==n)
v2.push_back(sum);
else
v1.push_back(sum);
return;
}
bt(pos+1,x,sum);
bt(pos+1,x,sum+a[pos]);
}
int main()
{
cin >>n>>m;
for (int i=0;i<n;i++)
cin >>a[i];
v2.push_back(m+1);
bt(0,n/2,0);
bt(n/2,n,0);
sort(v2.begin(),v2.end());
long long ans=0;
for (int i=0;i<v1.size();i++)
{
long long x=(m-v1[i]);
ans+= ((upper_bound(v2.begin(),v2.end(),x)-v2.begin()));
}
cout <<ans;
return 0;
}
Compilation message
bobek.cpp: In function 'int main()':
bobek.cpp:30:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i=0;i<v1.size();i++)
^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
252 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
352 KB |
Output is correct |
2 |
Correct |
1 ms |
492 KB |
Output is correct |
3 |
Correct |
1 ms |
528 KB |
Output is correct |
4 |
Correct |
1 ms |
604 KB |
Output is correct |
5 |
Correct |
1 ms |
604 KB |
Output is correct |
6 |
Correct |
1 ms |
604 KB |
Output is correct |
7 |
Correct |
1 ms |
604 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
604 KB |
Output is correct |
2 |
Correct |
1 ms |
604 KB |
Output is correct |
3 |
Correct |
1 ms |
620 KB |
Output is correct |
4 |
Correct |
1 ms |
620 KB |
Output is correct |
5 |
Correct |
2 ms |
624 KB |
Output is correct |
6 |
Correct |
2 ms |
624 KB |
Output is correct |
7 |
Correct |
1 ms |
624 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
624 KB |
Output is correct |
2 |
Correct |
2 ms |
624 KB |
Output is correct |
3 |
Correct |
1 ms |
624 KB |
Output is correct |
4 |
Correct |
1 ms |
624 KB |
Output is correct |
5 |
Correct |
2 ms |
624 KB |
Output is correct |
6 |
Correct |
1 ms |
624 KB |
Output is correct |
7 |
Correct |
2 ms |
624 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
25 ms |
3296 KB |
Output is correct |
2 |
Correct |
94 ms |
6868 KB |
Output is correct |
3 |
Correct |
422 ms |
25268 KB |
Output is correct |
4 |
Correct |
90 ms |
25268 KB |
Output is correct |
5 |
Correct |
11 ms |
25268 KB |
Output is correct |
6 |
Correct |
6 ms |
25268 KB |
Output is correct |
7 |
Correct |
10 ms |
25268 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
39 ms |
25268 KB |
Output is correct |
2 |
Correct |
28 ms |
25268 KB |
Output is correct |
3 |
Correct |
184 ms |
25268 KB |
Output is correct |
4 |
Correct |
2 ms |
25268 KB |
Output is correct |
5 |
Correct |
5 ms |
25268 KB |
Output is correct |
6 |
Correct |
11 ms |
25268 KB |
Output is correct |
7 |
Correct |
10 ms |
25268 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
66 ms |
25268 KB |
Output is correct |
2 |
Correct |
131 ms |
25268 KB |
Output is correct |
3 |
Correct |
129 ms |
25268 KB |
Output is correct |
4 |
Correct |
2 ms |
25268 KB |
Output is correct |
5 |
Correct |
49 ms |
25268 KB |
Output is correct |
6 |
Correct |
184 ms |
25268 KB |
Output is correct |
7 |
Correct |
73 ms |
25268 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
285 ms |
25268 KB |
Output is correct |
2 |
Correct |
26 ms |
25268 KB |
Output is correct |
3 |
Correct |
9 ms |
25268 KB |
Output is correct |
4 |
Correct |
1 ms |
25268 KB |
Output is correct |
5 |
Correct |
7 ms |
25268 KB |
Output is correct |
6 |
Correct |
164 ms |
25268 KB |
Output is correct |
7 |
Correct |
10 ms |
25268 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
26 ms |
25268 KB |
Output is correct |
2 |
Correct |
92 ms |
25268 KB |
Output is correct |
3 |
Correct |
8 ms |
25268 KB |
Output is correct |
4 |
Correct |
8 ms |
25268 KB |
Output is correct |
5 |
Correct |
70 ms |
25268 KB |
Output is correct |
6 |
Correct |
19 ms |
25268 KB |
Output is correct |
7 |
Correct |
180 ms |
25268 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
335 ms |
25268 KB |
Output is correct |
2 |
Correct |
30 ms |
25268 KB |
Output is correct |
3 |
Correct |
9 ms |
25268 KB |
Output is correct |
4 |
Correct |
440 ms |
25376 KB |
Output is correct |
5 |
Correct |
74 ms |
25376 KB |
Output is correct |
6 |
Correct |
11 ms |
25376 KB |
Output is correct |
7 |
Correct |
23 ms |
25376 KB |
Output is correct |