#include<stdio.h>
int main(){
	int num[100];
	int m;
	int n=0;
	while(scanf("%d",&m)!=EOF){
		num[n]=m;
		n++;
	}
	int count=0;
	for(int i=0;i<10;i++){
		if(num[i]%2!=0){
			count++;
		}
	}
	printf("%d",count);
	return 0;
}