Submission #1102503

#	Time	Username	Problem	Language	Result	Execution time	Memory
1102503		BuzzyBeez	Weird Numeral System (CCO21_day1problem2)	C++17	0 / 25	1 ms	592 KiB

Main

#include <bits/stdc++.h>
using namespace std;

map<long long, pair<int, int>> dp[1008];
int a[5008];

int d, K;
int attempt(int n, long long R) {
	if (n > 1000) return 1;
	if (dp[n].count(R)) return dp[n][R].first;
	if (R == 0) {
		dp[n][R] = make_pair(2, 0);
		return 2;
	}
	for (int i = 1; i <= d; ++i) if ((R - a[i]) % K == 0) {
		if (attempt(n + 1, (R - a[i]) / K) == 2) {
			dp[n][R] = make_pair(2, a[i]);
			return 2;
		}
	}
	dp[n][R] = make_pair(1, 0);
	return 1;
}

signed main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	int q, m; cin >> K >> q >> d >> m;
	for (int i = 1; i <= d; ++i) cin >> a[i];
	long long N; bool pass;
	while (q--) {
		cin >> N; pass = 0;
		for (int i = 1; i <= d; ++i) if (attempt(0, N) == 2) {pass = 1; break;}
		if (!pass) cout << "IMPOSSIBLE\n";
		else {
			vector<int> ans;
			// for (int i = 0; N; ++i) {
				// ans.push_back(dp[i][N].second);
				// N = (N - dp[i][N].second) / K;
			// }
			// reverse(ans.begin(), ans.end());
			// for (int i : ans) cout << i << ' ';
			// cout << '\n';
		}
	}
}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 17