oj.uz

답안 #1054175

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1054175 2024-08-12T07:16:28 Z socpite Secret Permutation (RMI19_permutation) C++17
45 / 100
 5000 ms 596 KB 
#include "permutation.h"
#include<bits/stdc++.h>
using namespace std;

const int maxn = 300;

namespace {
	long long D[maxn];
	bool vis[maxn];
	vector<int> crr;
	vector<vector<int>> allans;
	mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
}

void bt(int pos, int n){
	if(pos > n){
		if(abs(crr.back() - crr[0]) != D[1])return;
		allans.push_back(crr);
		return;
	}
	int tmp = crr.back() + D[pos]; 
	if(tmp <= n && !vis[tmp]){
		crr.push_back(tmp);
		vis[tmp] = 1;
		bt(pos+1, n);
		vis[tmp] = 0;
		crr.pop_back();
	}
	
	tmp = crr.back() - D[pos]; 
	if(tmp > 0 && !vis[tmp]){
		crr.push_back(tmp);
		vis[tmp] = 1;
		bt(pos+1, n);
		vis[tmp] = 0;
		crr.pop_back();
	}
}

void solve(int N) {
	long long sum = 0;
	vector<int> P(N);
	iota(P.begin(), P.end(), 1);
	for(int i = 1; i <= N; i++){
		D[i] = query(P);
		sum += D[i];
		P.push_back(P[0]);
		P.erase(P.begin());
	}
	sum /= N-1;
	for(int i = 1; i <= N; i++){
		D[i] = sum - D[i];
		// cout << D[i] << endl;
	}
	allans.clear();

	for(int i = 1; i <= N; i++){
		crr.push_back(i);
		vis[i] = 1;
		bt(2, N);
		vis[i] = 0;
		crr.pop_back();
	}
	while(allans.size() > 2){
		shuffle(P.begin(), P.end(), rng);
		vector<vector<int>> nw;
		int chksum = query(P);
		for(auto vec: allans){
			int csum = 0;
			for(int i = 1; i < N; i++)csum += abs(vec[P[i]-1] - vec[P[i-1]-1]);
			if(csum == chksum)nw.push_back(vec);
		}
		allans = nw;
	}
	answer(allans.back());

}

Compilation message

stub.cpp: In function 'int query(int*)':
stub.cpp:15:9: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |   fscanf(stdin, "%d", &x);
      |   ~~~~~~^~~~~~~~~~~~~~~~~
stub.cpp: In function 'int main(int, char**)':
stub.cpp:48:9: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |   fscanf(stdin, "%d", &N);
      |   ~~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
13.5 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Partially correct 0 ms 344 KB Partially correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 596 KB Output is correct
6 Correct 0 ms 344 KB Output is correct

Subtask #2
31.5 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Partially correct 0 ms 344 KB Partially correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 596 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 344 KB Output is correct

Subtask #3
0.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Partially correct 0 ms 344 KB Partially correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 596 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 7 ms 344 KB Output is correct
18 Correct 22 ms 448 KB Output is correct
19 Correct 22 ms 344 KB Output is correct
20 Correct 5 ms 344 KB Output is correct
21 Correct 232 ms 344 KB Output is correct
22 Correct 177 ms 344 KB Output is correct
23 Correct 27 ms 344 KB Output is correct
24 Execution timed out 5064 ms 428 KB Time limit exceeded
25 Halted 0 ms 0 KB -