平方差

题目描述

https://www.dotcpp.com/oj/problem3142.html

代码

#include<cstdio>
using namespace std;
int count=0;
int main()
{
    int n1,n2;
    scanf("%d%d",&n1,&n2);
    for(int i=n1;i<=n2;i++)
        if(i%4==0||i%2!=0)
            count++;
    printf("%d",count);
    return 0;
}