Cod sursa(job #1500182)
Utilizator | Data | 11 octombrie 2015 16:34:14 | |
---|---|---|---|
Problema | Cifre | Scor | 50 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.48 kb |
#include <iostream>
#include <fstream>
#include <iomanip>
#define MAX 504
using namespace std;
ifstream f("cifre.in");
ofstream g("cifre.out");
long long int a,b,k,c,i,u,nr,p;
double t,t1,t2;
int main()
{
f>>a>>b>>c>>k;
nr=b-a+1;
for(i=a;i<=b;i++)
{ int x=i;
u=0;
while( x&& u!=k)
{
if(x%10==c) u++;
x/=10;
}
if(u>=k) p++;
}
t1=p;
t2=nr;
t=t1/t2;
g<<setprecision(4)<<t;
}