Submission #1412651

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Source Code Expand

#include <stdio.h>  
#include <string.h>  
#include <stdlib.h>  
#include <iostream>  
#include <algorithm>  
#include <time.h>  
#include<cstdio>
#include<vector>
#include<functional>
#include<math.h>


using namespace std;


long long a[51][51];

int main() {
	for (int i = 0; i<=50; i++) {
		a[i][0] = 1;
		a[i][i] = 1;
	}
	for (int i = 1; i <= 50; i++) {
		for (int j = 0; j <= i; j++) {
			a[i][j] = a[i - 1][j] + a[i - 1][j - 1];
		}
	}
	int n, p;
	scanf("%d%d", &n, &p);
	int x;
	long long ou = 0, ji = 0;
	for (int i = 0; i < n; i++) {
		scanf("%d", &x);
		if (x % 2 == 0)ou++;
		else
			ji++;
	}
	long long res = 0;
	for (int i = p; i <= ji; i += 2) {
		res += a[ji][i] * pow(2ll, ou);
	}
	printf("%lld", res);
	
	return 0;

}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:29:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &p);
                       ^
./Main.cpp:33:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &x);
                  ^

Judge Result