题目描述
blablabla
样例
blablabla
算法1
(暴力枚举) $O(n^2)$
blablabla
时间复杂度
参考文献
C++ 代码
blablabla
算法2
(暴力枚举) $O(n^2)$
blablabla
时间复杂度
参考文献
C++ 代码
#include "bits/stdc++.h"
#define int long long
using namespace std;
const int N = 1010;
int a[N][N];
int T, n;
void pre() {
for (int i = 1; i <= 1000; i++) {
for (int j = 1; j <= 1000; j++) {
if (__gcd(i, j) == 1) {
a[i][j] = 1;
}
}
}
for (int i = 1; i <= 1000; i++) {
for (int j = 1; j <= 1000; j++) {
a[i][j] += a[i - 1][j] + a[i][j - 1] - a[i - 1][j - 1];
}
}
}
signed main() {
pre();
cin >> T;
for (int i = 1; i <= T; i++) {
cin >> n;
cout << i << " " << n << " " << a[n][n] + 2 << '\n';
}
return 0;
}