Submission #1413818
Source Code Expand
#include <cstdio> #include <algorithm> #include <cstring> #include <cmath> #include <iostream> #include <vector> #include <cstdlib> #include <climits> #include <ctime> using namespace std; const int len = 1e6; int n, p, a; long long ans, f[2]; int get_c(int n, int m) { if (n == m) return 1; else if (n == m + 1) return n; int ret = (m + 1) * (m + 2) / 2; for (int i = m + 3; i <= n; ++i) { ret = ret * i / (i - m); } return ret; } int main() { //freopen("print.in","r",stdin); //freopen("print.out","w",stdout); cin >> n >> p; for (int i=1;i<=n;i++) { cin >> a; ++f[a & 1]; } for (int i=p;i<=f[1];i+=2) { ans += get_c(f[1], i); } ans *= ((long long) 1 << f[0]); cout << ans << endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | A - Biscuits |
User | yyy01 |
Language | C++14 (GCC 5.4.1) |
Score | 200 |
Code Size | 803 Byte |
Status | AC |
Exec Time | 1 ms |
Memory | 256 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 200 / 200 | ||||
Status |
|
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Set Name | Test Cases |
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Sample | sample1.txt, sample2.txt, sample3.txt, sample4.txt |
All | sample1.txt, sample2.txt, sample3.txt, sample4.txt, in1.txt, in2.txt, in3.txt, in4.txt, in5.txt, in6.txt, in7.txt, in8.txt, sample1.txt, sample2.txt, sample3.txt, sample4.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
in1.txt | AC | 1 ms | 256 KB |
in2.txt | AC | 1 ms | 256 KB |
in3.txt | AC | 1 ms | 256 KB |
in4.txt | AC | 1 ms | 256 KB |
in5.txt | AC | 1 ms | 256 KB |
in6.txt | AC | 1 ms | 256 KB |
in7.txt | AC | 1 ms | 256 KB |
in8.txt | AC | 1 ms | 256 KB |
sample1.txt | AC | 1 ms | 256 KB |
sample2.txt | AC | 1 ms | 256 KB |
sample3.txt | AC | 1 ms | 256 KB |
sample4.txt | AC | 1 ms | 256 KB |