poj2924

简单题

#include <iostream>
#include <cstdlib>
#include <cstring>
#include <cstdio>
using namespace std;

int main()
{
    //freopen("D:\\t.txt", "r", stdin);
    int t;
    scanf("%d", &t);
    long long n,m;
    for (int i = 0; i < t; i++)
    {
        scanf("%I64d%I64d", &n, &m);
        long long ans1 = (n + m), ans2 = (m - n + 1);
        if (ans1 % 2 == 0)
            ans1 /=2;
        else
            ans2 /=2;
        printf("Scenario #%d:\n", i + 1);
        printf("%I64d\n\n", ans1 * ans2);
    }
    return 0;
}