#include<stdio.h>
#define max 10000
int arr[max];
int main()
{
int tc,i,s;
while(tc--)
{
int sum=0,j=0,k=0;
for(i=1;i<=s;i++)
{
if(arr[i]!=0)
{j++;k=arr[i];}
sum+=(arr[i]*i);
}
if(j==1 && k==1)
else if(sum%2==0)
else
}
return 0;
}
I2luY2x1ZGU8c3RkaW8uaD4KI2RlZmluZSBtYXggMTAwMDAgCmludCBhcnJbbWF4XTsKaW50IG1haW4oKQp7CglpbnQgdGMsaSxzOwoJc2NhbmYoIiVkIiwmdGMpOwoJd2hpbGUodGMtLSkKCXsKCglpbnQgc3VtPTAsaj0wLGs9MDsKCQlzY2FuZigiJWQiLCZzKTsKCQlmb3IoaT0xO2k8PXM7aSsrKQoJCXsKCQkJc2NhbmYoIiVkIiwmYXJyW2ldKTsKCQkJaWYoYXJyW2ldIT0wKQoJCQl7aisrO2s9YXJyW2ldO30KCQkJc3VtKz0oYXJyW2ldKmkpOwoJCX0KCQlpZihqPT0xICYmIGs9PTEpCgkJcHJpbnRmKCJUb20gV2luc1xuIik7CgkJZWxzZSBpZihzdW0lMj09MCkKCQkJcHJpbnRmKCJIYW5rcyBXaW5zXG4iKTsKCQllbHNlIAoJCQlwcmludGYoIlRvbSBXaW5zXG4iKTsKCX0KCQoJCQkKCSByZXR1cm4gMDsKfQoK