Submission #1444274
Source Code Expand
#include <iostream> using namespace std; int nCr(int n, int r){ if(n-r<r) r = n-r; if(!r) return 1; if(r==1) return n; long long top=n, btm=1; for(int i=1; i<r; i++){ btm *= i+1; top *= n-i; } return top/btm; } int main(){ int N, P; cin >> N >> P; int A[N]; int odd=0, eve=0; for(int i=0; i<N; i++){ cin >> A[i]; if(A[i]%2) odd++; } eve = N-odd; long long ans=0, seleve=0; for(int i=0; i<=eve; i++) seleve += nCr(eve, i); if(P){ //P==1(odd) for(int i=1; i<=odd; i+=2) ans += seleve * nCr(odd, i); }else{ //P==0(even) for(int i=0; i<=odd; i+=2) ans += seleve * nCr(odd, i); } cout << ans << endl; return 0; }
Submission Info
Submission Time | |
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Task | A - Biscuits |
User | u_sho |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 836 Byte |
Status | WA |
Exec Time | 1 ms |
Memory | 256 KB |
Judge Result
Set Name | Sample | All | ||||||
---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 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 | WA | 1 ms | 256 KB |
in4.txt | WA | 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 |