poj3090

简单题

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

#define maxn 1005

int n;
int f[maxn][maxn];

int gcd(int x, int y)
{
    if (!x || !y)
        return x > y ? x : y;
    for (int t; t = x % y; x = y, y = t)
        ;
    return y;
}

int main()
{
    //freopen("t.txt", "r", stdin);
    for (int i = 1; i <= 1000; i++)
        for (int j = 1; j <= 1000; j++)
            if (gcd(i, j) == 1)
                f[i][j] = f[i][j - 1] + f[i - 1][j] - f[i - 1][j - 1] + 1;
            else
                f[i][j] = f[i][j - 1] + f[i - 1][j] - f[i - 1][j - 1];
    int t;
    scanf("%d", &t);
    for (int i = 0; i < t; i++)
    {
        scanf("%d", &n);
        printf("%d %d %d\n", i + 1, n, f[n][n] + 2);
    }
    return 0;
}