Code Forces 833 A The Meaningless Game(思维,数学)
Code Forces 833 A The Meaningless Game
题目大意
有两个人玩游戏,每轮给出一个自然数k,赢得人乘k^2,输得人乘k,给出最后两个人的分数,问两个人能否达到这个分数
不得不吐槽一下那么长的英文题面翻译完只有一句话……
solution
也很好想叭
乘积开立方判断是否为两个数的因数
如果是的话,显然不成立
否则输出Yes即可
#include <iostream>
#include <cstring>
#include <cstdio>
#include <algorithm>
#include <cmath>
#define int long long
using namespace std;
inline int read(){
int x = 0, w = 1;
char ch = getchar();
for(; ch > ‘9‘ || ch < ‘0‘; ch = getchar()) if(ch == ‘-‘) w = -1;
for(; ch >= ‘0‘ && ch <= ‘9‘; ch = getchar()) x = x * 10 + ch - ‘0‘;
return x * w;
}
signed main(){
int n = read();
while(n--){
int a = read(), b = read();
int tmp = a * b;
// int awsl = pow(tmp, (1.0 / 3)) + 0.5;
int awsl = cbrt((double)a*(double)b);//在网上找到了这个开三次方的函数,啧啧
if(awsl * awsl * awsl != tmp || a % awsl || b % awsl) cout << "No" << endl;
else cout << "Yes" << endl;
}
return 0;
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