POJ 1319 -- Pipe Fitters

版权声明： https://blog.csdn.net/moon_sky1999/article/details/81673503

题目来源：http://poj.org/problem?id=1319

结果为0的时候输出“grid”。

实现详见代码：

#include <cstdio>
#include <cstring>
#include <iomanip>
#include <iostream>
#include <algorithm>
#include <string>
#include <math.h>

using namespace std;

const double eps=1e-10;
double a,b;

int grid(double x, double y) {
    return (int) x * (int) y;
}

int skew(double x, double y) {
    int a1 = (int) x, a2;
    if ((int) (x - 0.5) == (int) x)
        a2 = a1;
    else a2 = a1 - 1.0;
    y -= 1.0;
    if (y < 0.0)return 0;
    int ans = a1;
    double d = sqrt(3.0) / 2.0;
    for (int i = 2;; ++i) {
        y -= d;
        if (y < eps)break;
        if (i & 1) {
            ans += a1;
        } else ans += a2;
    }
    return ans;
}

int main() {
    while (cin >> a >> b) {
        int ans1 = max(grid(a, b), grid(b, a)), ans2 = max(skew(a, b), skew(b, a));
        if (ans1 >= ans2)
            cout << ans1 << ' ' << "grid" << endl;
        else
            cout << ans2 << ' ' << "skew" << endl;
    }
    return 0;
}