2577번: 숫자의 개수

#include <iostream>

#include <cmath>

using namespace std;

int main()

{

int a, b, c, d, sum, num[9] = { 0 }, out[10] = { 0 };

cin >> a >> b >> c;

sum = a*b*c;

d = sum;

for (a = 8; a > -1; --a)

{

c = pow(10, a);

b = sum / c;

sum = sum % c;

if (sum == d) continue;

++out[b];

}

for (a = 0; a < 10; ++a)

cout << out[a] << endl;

}