41 lines
700 B
Java
41 lines
700 B
Java
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package LanQiaoOJ;
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import java.math.BigInteger;
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import java.util.Scanner;
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/*
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* <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD>N!<EFBFBD><EFBFBD>ĩβǡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>K<EFBFBD><EFBFBD>0<EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><EFBFBD>N<EFBFBD>Ƕ<EFBFBD>
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<EFBFBD>٣<EFBFBD>
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>N<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ1<EFBFBD><EFBFBD>
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ
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һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>K<EFBFBD><EFBFBD>
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ
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һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>𰸡<EFBFBD>*/
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public class <EFBFBD><EFBFBD><EFBFBD>׳<EFBFBD> {
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public static void main(String[] args) {
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Scanner sc=new Scanner(System.in);
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long k=sc.nextInt();//0<>ĸ<EFBFBD><C4B8><EFBFBD>
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for(long i=2;i<1e18;i++) {
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if(Fun(i)==k) {
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System.out.print(i);
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break;
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}else if(Fun(i)>k) {
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System.out.print(-1);
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return;
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}
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}
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}
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public static long Fun(long n) {
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long ans=0;
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while(n>0) {
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>1<EFBFBD><31>5<EFBFBD><35><EFBFBD><EFBFBD>1<EFBFBD><31>0<EFBFBD><30><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>5<EFBFBD>ĸ<EFBFBD><C4B8><EFBFBD>
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ans=ans+n/5;
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n=n/5;
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}
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return ans;
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}
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}
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