HDOJ 5100 Chessboard 構造
來源：程序員人生 發布時間：2014-12-23 09:01:47 閱讀次數：3613次
MATRIX67大神: http://www.matrix67.com/blog/archives/5900
Chessboard
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 538 Accepted Submission(s): 241
Problem Description
Consider the problem of tiling an n×n chessboard by polyomino pieces that are k×1 in size; Every one of the k pieces of each polyomino tile must align exactly with one of the chessboard squares. Your task is to figure out the maximum number of chessboard squares
tiled.
Input
There are multiple test cases in the input file.
First line contain the number of cases T (T≤10000).
In the next T lines contain T cases , Each case has two integers n and k. (1≤n,k≤100)
Output
Print the maximum number of chessboard squares tiled.
Sample Input
Sample Output
Source
BestCoder Round #17
#include <iostream>
#include <cstring>
#include <cstdio>
#include <algorithm>
using namespace std;
int main()
{
int T_T;
int n,k;
scanf("%d",&T_T);
while(T_T--)
{
scanf("%d%d",&n,&k);
if(k>n)
{
puts("0");
continue;
}
int r=n%k;
if(r>k/2) r=k-r;
printf("%d
",n*n-r*r);
}
return 0;
}
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