Time Limit: 3000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 767 Accepted Submission(s): 403
#include <cstdio>
#include <algorithm>
#define ll long long
using namespace std;
ll a[10000];
void get(int n)
{
a[0] = 1;
int n2 = 0;
int n3 = 0;
int n5 = 0;
int n7 = 0;
int cnt = 1;
while(cnt < n){
ll t1 = min(a[n2]*2, a[n3]*3);
ll t2 = min(a[n5]*5, a[n7]*7);
ll t = min(t1, t2);
if(t == a[n2]*2)
++n2;
if(t == a[n3]*3)
++n3;
if(t == a[n5]*5)
++n5;
if(t == a[n7]*7)
++n7;
a[cnt++] = t;
}
}
int main()
{
get(5200);
int t, n;
scanf("%d", &t);
while(t--){
scanf("%d", &n);
printf("%I64d\n", *lower_bound(a, a+5219, n));
}
return 0;
}
原文:http://www.cnblogs.com/inmoonlight/p/5893885.html