Submission #1796309
Source Code Expand
#include <cstdio> #include <algorithm> int n, p; long long int even, odd; long long int ans; long long int c(int n, int k){ long long int res = 1; for(int i=0; i<k; ++i){ res *= (n-i); res /= i+1; } return res; } int main(){ scanf("%d %d", &n, &p); for(int i=0; i<n; ++i){ int a; scanf("%d", &a); if(a % 2 == 0) ++even; else ++odd; } for(int i=0; 2*i+p<=odd; ++i){ ans += c(odd, 2*i+p) * ((long long int)1 << even); } printf("%lld\n", ans); }
Submission Info
Submission Time | |
---|---|
Task | A - Biscuits |
User | Power730 |
Language | C++14 (GCC 5.4.1) |
Score | 200 |
Code Size | 497 Byte |
Status | AC |
Exec Time | 1 ms |
Memory | 128 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:18:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &p); ^ ./Main.cpp:21:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a); ^
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 | 128 KB |
in2.txt | AC | 1 ms | 128 KB |
in3.txt | AC | 0 ms | 128 KB |
in4.txt | AC | 1 ms | 128 KB |
in5.txt | AC | 1 ms | 128 KB |
in6.txt | AC | 1 ms | 128 KB |
in7.txt | AC | 1 ms | 128 KB |
in8.txt | AC | 0 ms | 128 KB |
sample1.txt | AC | 0 ms | 128 KB |
sample2.txt | AC | 0 ms | 128 KB |
sample3.txt | AC | 0 ms | 128 KB |
sample4.txt | AC | 0 ms | 128 KB |