C++ 代码

#include<iostream>
using namespace std;

int main()
{
    int n, x, y, sum = 0;
    cin >> n;

    for ( int i = 0; i < n; i++)
    {
        cin >> x >> y;
        if ( x > y )
        {
            int tmp = x; x = y; y = tmp;
        }
        if ( x % 2 == 0)
        {
            x += 1;
            if ( x < y )
                sum += x;            
        }
        while ( x + 2 < y)
        {
            x += 2;
            sum += x;
        }
        cout << sum << endl;
        sum = 0;
    }
}