[SWEA] 1926. 간단한 369게임

문제

swexpertacademy.com/main/code/problem/problemDetail.do?contestProbId=AV5PTeo6AHUDFAUq

SW Expert Academy

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코드

#include<iostream>

using namespace std;

int solve(int n) {
	int count = 0;
	while (true) {
		int digit = n % 10;
		if (digit == 3 || digit == 6 || digit == 9) count++;
		n /= 10;
		if (n == 0) break;
	}
	return count;

}

int main() {
	int n;
	cin >> n;

	for (int i = 1; i <= n; i++) {
		int count = solve(i);
		if (count == 0) {
			cout << i;
			if (i != n) cout << " ";
			continue;
		}
		for (int j = 0; j < count; j++) {
			cout << "-";
		}
		cout << " ";
	}

}