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Cod sursa(job #505934)
#include <stdio.h>
int fact(int n)
{
int i, s = 1;
for (i = 1; i <= n; i++)
s = s * i;
printf("%d", s);
return 0;
}
int nr_cifre(int n)
{
int nr = 0;
while(n){
n /= 10;
nr++;
}
printf("%d", nr);
return 0;
}
int main()
{
int p,b;
freopen("fact.in", "r", stdin);
freopen("fact.out", "w", stdout);
scanf("%d",&p);
for (i = 1; i < 32000; ++i){
if((nr_cifre(fact(i)) == p)
printf("%d", i);
}
return 0;
}