CCPC秦皇岛签到题D
https://vjudge.net/contest/332560#problem/D
D - Decimal Gym - 102361D
Given a positive integer n, determine if 1n is an infinite decimal in decimal base. If the answer is yes, print "Yes" in a single line, or print "No" if the answer is no.
Input
The first line contains one positive integer T (1≤T≤100), denoting the number of test cases.
For each test case:
Input a single line containing a positive integer n (1≤n≤100).
Output
Output T lines each contains a string "Yes" or "No", denoting the answer to corresponding test case.
Example
Input
2
5
3
Output
No
Yes
Note
15=0.2, which is a finite decimal.
13=0.333⋯, which is an infinite decimal.
题解:题目是要判断1/n是不是无限小数,是就输出Yes否则No。
代码:
#include <bits/stdc++.h>
using namespace std;
int main(){
ios::sync_with_stdio(false);
int n, t;
cin >> n;
while(n--){
cin >> t;
if(t%5 == 0){
do{
t/=5;
}while(t%5 == 0);
}
if(t%2 == 0){
do{
t/=2;
}while(t%2 == 0);
}
if(t == 1){
cout << "No" << endl;
}else{
cout << "Yes" << endl;
}
}
//system("pause");
return 0;
}
查看29道真题和解析