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N!(杭电1042)
N!
Time Limit: 10000/5000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 55971 Accepted Submission(s): 15886
Problem Description
Given an integer N(0 ≤ N ≤ 10000), your task is to calculate N!
Input
One N in one line, process to the end of file.
Output
For each N, output N! in one line.
Sample Input
1 2 3
Sample Output
1 2 6#include<stdio.h> int main() { int i,j,n,m; while(scanf("%d",&n)!=EOF) { if(n<0) { continue; } int str[10000]={0}; str[0]=1; m=0; for(i=1;i<=n;i++)//m用来控制进位。 for(j=0;j<=m;j++) { str[j]=str[j]*i; if(j>0&&str[j-1]>=10000) { str[j]=str[j]+str[j-1]/10000; str[j-1]=str[j-1]%10000; } if(str[m]>=10000) m++; } printf("%d",str[m]); for(i=m-1;i>=0;i--) printf("%04d",str[i]); printf("\n"); } return 0; }
N!(杭电1042)
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