课堂学习——Beautiful number

It is not ugly number

Time Limit:2000MS  Memory Limit:65535K

描述

Ugly numbers are numbers whose only prime factors are 2, 3 or 5. The sequence 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, ...shows the 

first 10 ugly numbers. By convention, 1 is included. Then, here are the first 10 Not ugly numbers:7, 11, 13, 14, 17, 19, 

21, 22, 23, 26. Given the integer n, write a program to find and print the n'th Not ugly number.

输入格式

First line is T（T<=10000）, the number of cases.

The T lines following. Each line of the input contains a positive integer n (n <= 100000000).

输出格式

For each case, output the n'th Not ugly number .

输入样例

3

1

2

9

输出样例

7

11

23

#include <iostream>#include <queue>#include <vector>#include <cstdio>using namespace std;typedef pair<unsigned long ,int> node_type;int main(){    unsigned long result[1700];    priority_queue<node_type,vector<node_type>,greater<node_type> >Q;    Q.push(node_type(1,2));    for(int i=0;i<1700;++i)    {        node_type node=Q.top();        Q.pop();        switch(node.second){            case 2:            Q.push(make_pair(node.first*2,2));            case 3:            Q.push(make_pair(node.first*3,3));            case 5:            Q.push(make_pair(node.first*5,5));        }        result[i]=node.first;    }    int T,n,i;    scanf("%d",&T);    while(T--){        scanf("%d",&n);        for(i=0;i<1700;++i)        {            if(result[i]-i-1>=n)            {                printf("%d\n",n+i);                break;            }        }    }    return 0;}