結果
| 問題 | No.2074 Product is Square ? |
| コンテスト | |
| ユーザー |
Forested
|
| 提出日時 | 2022-09-16 22:05:35 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 230 ms / 2,000 ms |
| コード長 | 2,668 bytes |
| コンパイル時間 | 1,281 ms |
| コンパイル使用メモリ | 125,436 KB |
| 最終ジャッジ日時 | 2025-02-07 09:34:50 |
|
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 33 |
ソースコード
#ifndef LOCAL
#define FAST_IO
#endif
// ============
#include <algorithm>
#include <array>
#include <bitset>
#include <cassert>
#include <cmath>
#include <iomanip>
#include <iostream>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <stack>
#include <string>
#include <tuple>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
#define OVERRIDE(a, b, c, d, ...) d
#define REP2(i, n) for (i32 i = 0; i < (i32) (n); ++i)
#define REP3(i, m, n) for (i32 i = (i32) (m); i < (i32) (n); ++i)
#define REP(...) OVERRIDE(__VA_ARGS__, REP3, REP2)(__VA_ARGS__)
#define PER(i, n) for (i32 i = (i32) (n) - 1; i >= 0; --i)
#define ALL(x) begin(x), end(x)
using namespace std;
using u32 = unsigned int;
using u64 = unsigned long long;
using u128 = __uint128_t;
using i32 = signed int;
using i64 = signed long long;
using i128 = __int128_t;
using f64 = double;
using f80 = long double;
template <typename T>
using Vec = vector<T>;
template <typename T>
bool chmin(T &x, const T &y) {
if (x > y) {
x = y;
return true;
}
return false;
}
template <typename T>
bool chmax(T &x, const T &y) {
if (x < y) {
x = y;
return true;
}
return false;
}
istream &operator>>(istream &is, i128 &x) {
i64 v;
is >> v;
x = v;
return is;
}
ostream &operator<<(ostream &os, i128 x) {
os << (i64) x;
return os;
}
istream &operator>>(istream &is, u128 &x) {
u64 v;
is >> v;
x = v;
return is;
}
ostream &operator<<(ostream &os, u128 x) {
os << (u64) x;
return os;
}
[[maybe_unused]] constexpr i32 INF = 1000000100;
[[maybe_unused]] constexpr i64 INF64 = 3000000000000000100;
struct SetUpIO {
SetUpIO() {
#ifdef FAST_IO
ios::sync_with_stdio(false);
cin.tie(nullptr);
#endif
cout << fixed << setprecision(15);
}
} set_up_io;
// ============
#ifdef DEBUGF
#else
#define DBG(x) (void) 0
#endif
bool is_square(i64 x) {
i64 sq = (i64) round(sqrt(x));
for (i64 i = sq - 10; i <= sq + 10; ++i) {
if (i * i == x) {
return true;
}
}
return false;
}
void solve() {
i32 n;
cin >> n;
Vec<i64> a(n);
REP(i, n) {
cin >> a[i];
}
REP(i, n) REP(j, i + 1, n) {
i64 g = gcd(a[i], a[j]);
a[i] /= g;
a[j] /= g;
}
bool sq = true;
REP(i, n) {
if (!is_square(a[i])) {
sq = false;
}
}
if (sq) {
cout << "Yes\n";
} else {
cout << "No\n";
}
}
int main() {
i32 t;
cin >> t;
REP(ti, t) {
solve();
}
}
Forested