제출 #1139667

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1139667		tkm_algorithms	Permutation Recovery (info1cup17_permutation)	C++20	0 / 100	1095 ms	324 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define sz size()
#define ff first
#define ss second
#define pb push_back
#define pii pair <int, int>
#define dur exit(0)
#define dur1 return(0)
const int N = 2e5 + 5;
int dp[N], a[N], b[N];

int main () {
//	freopen ("input.txt", "r", stdin);
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	int n;
	cin >> n;
	for (int i = 1; i <= n; ++i) {
		cin >> a[i];
	}
	
//	for (int i = 1; i <= n; ++i) {
//		cout << i << " " << a[i] << "\n";
//	}
//	return 0;
	for (int j = 1; j <= n; ++j) {
		b[j] = j;
	}
	do {
		dp[0] = 1;
		for (int i = 1; i <= n; ++i) {
			dp[i] = 0;
			for (int j = i - 1; j >= 0; j--) {
				if (b[i] > b[j]) {
					dp[i] += dp[j];
				}
			}
		}
//		cout << a[1];
//		return 0;
		int jj = 0;
		for (int i = 1; i <= n; ++i) {
			if (i > 1)
				dp[i] += dp[i - 1];
			if (dp[i] != a[i]) {
				jj = 1;
//				cout << i << " " << dp[i] << " " << a[i] << "\n";
//				return 0;
				
			}
		}
		if (!jj) {
			for (int i = 1; i <= n; ++i) {
				cout << b[i] << " ";
			}
			return 0;
		}
	}while (next_permutation(b + 1, b + n + 1));
}

• Subtask 1: 0 / 100