C++ 代码

#include<cstdio>
#include<algorithm>
#include<iostream>
int main(){
    int a,b,sum=0;
    scanf("%d%d",&a,&b);
    if(a>b) {
        int t=a;
        a=b;
        b=t;
    }
    //printf("%d%d",a,b);
    for(int i = a+1;i<b;i++){
        if(i%2==1 || i%2==-1){
          sum+=i;  

        }
    }
    printf("%d",sum);
    return 0;
}