cses

cses solutions in pure c
git clone git://git.superpozycja.net/cses
log | files | refs

s.c (290B)

      1 #include <stdio.h>
      2 #include <stdlib.h>
      3 #include <string.h>
      4 #include <stdint.h>
      5 
      6 int solve()
      7 {
      8 	int res = 0;
      9 	int nn = 5;
     10 	int n;
     11 
     12 	scanf("%d", &n);
     13 
     14 	while (nn <= n) {
     15 		res += n / nn;
     16 
     17 		nn *= 5;
     18 	}
     19 
     20 	printf("%d\n", res);
     21 
     22 
     23 	return 0;
     24 }
     25 
     26 int main()
     27 {
     28 	int t = 1;
     29 	while (t--)
     30 		solve();
     31 }