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Submission #287337

# Submission time Handle Problem Language Result Execution time Memory
287337 2020-08-31T15:53:10 Z eohomegrownapps Secret Permutation (RMI19_permutation) C++14
60 / 100
 21 ms 384 KB 
#include "permutation.h"
#include <bits/stdc++.h>
using namespace std;

//int query(std::vector<int> v);
//void answer(std::vector<int> v);

vector<int> getDifferences(vector<int> perm){
	deque<int> dq(perm.begin(),perm.end());
	int n = perm.size();

	vector<int> vals(n);
	int tot = 0;
	for (int i = 0; i<n; i++){
		vector<int> q(dq.begin(),dq.end());
		/*for (int x : q){
			cout<<x<<' ';
		}cout<<endl;*/
		vals[i]=query(q);
		tot+=vals[i];
		dq.push_back(dq.front());
		dq.pop_front();
	}
	vector<int> ans(n);
	ans[n-1]=tot/(n-1) - vals[0];
	//cout<<ans[n-1]<<'\n';
	int prev = ans[n-1];
	vals.push_back(vals[0]);
	for (int i = 0; i<n; i++){
		ans[i] = prev - (vals[i+1]-vals[i]);
		prev = ans[i];
	}
	return ans;
}

void solve(int n){
	vector<int> q1(n);
	for (int i = 0; i<n; i++){
		q1[i]=i+1;
	}
	vector<int> v1 = getDifferences(q1);
	/*for (int i : v){
		cout<<i<<' ';
	}cout<<endl;*/
	vector<int> q2;
	for (int i = 1; i<=n; i+=2){
		q2.push_back(i);
	}
	for (int i = 2; i<=n; i+=2){
		q2.push_back(i);
	}
	vector<int> v2 = getDifferences(q2);
	for (int i = 0; i<n-1; i++){
		int tot;
		if (i%2==0){
			//cout<<"query "<<i/2<<'\n';
			tot = v2[i/2];
		} else {
			//cout<<"query "<<(n+1)/2+i/2<<'\n';
			tot = v2[(n+1)/2+i/2];
		}
		//cout<<tot<<'\n';
		//cout<<v1[i]<<' '<<v1[i+1]<<'\n';
		if (abs(v1[i]+v1[i+1])!=tot){
			v1[i+1]=-v1[i+1];
		}
	}
	/*for (int i : v1){
		cout<<i<<' ';
	}cout<<endl;*/
	int cur = 0;
	int mn = 0;
	for (int i = 0; i<n-1; i++){
		cur+=v1[i];
		mn=min(cur,mn);
	}
	vector<int> ans(n);
	ans[0]=1-mn;
	for (int i = 1; i<n; i++){
		ans[i]=ans[i-1]+v1[i-1];
	}
	/*for (int i : ans){
		cout<<i<<' ';
	}cout<<'\n';*/
	answer(ans);
}

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
9.0 / 15.0

# Verdict Execution time Memory Grader output
1 Partially correct 1 ms 256 KB Partially correct
2 Partially correct 1 ms 256 KB Partially correct
3 Partially correct 0 ms 256 KB Partially correct
4 Partially correct 1 ms 256 KB Partially correct
5 Partially correct 0 ms 256 KB Partially correct
6 Partially correct 1 ms 256 KB Partially correct

Subtask #2
21.0 / 35.0

# Verdict Execution time Memory Grader output
1 Partially correct 1 ms 256 KB Partially correct
2 Partially correct 1 ms 256 KB Partially correct
3 Partially correct 0 ms 256 KB Partially correct
4 Partially correct 1 ms 256 KB Partially correct
5 Partially correct 0 ms 256 KB Partially correct
6 Partially correct 1 ms 256 KB Partially correct
7 Partially correct 2 ms 256 KB Partially correct
8 Partially correct 2 ms 256 KB Partially correct
9 Partially correct 2 ms 256 KB Partially correct
10 Partially correct 2 ms 256 KB Partially correct
11 Partially correct 2 ms 256 KB Partially correct
12 Partially correct 2 ms 256 KB Partially correct
13 Partially correct 3 ms 288 KB Partially correct
14 Partially correct 2 ms 256 KB Partially correct
15 Partially correct 2 ms 256 KB Partially correct
16 Partially correct 2 ms 256 KB Partially correct

Subtask #3
30.0 / 50.0

# Verdict Execution time Memory Grader output
1 Partially correct 1 ms 256 KB Partially correct
2 Partially correct 1 ms 256 KB Partially correct
3 Partially correct 0 ms 256 KB Partially correct
4 Partially correct 1 ms 256 KB Partially correct
5 Partially correct 0 ms 256 KB Partially correct
6 Partially correct 1 ms 256 KB Partially correct
7 Partially correct 2 ms 256 KB Partially correct
8 Partially correct 2 ms 256 KB Partially correct
9 Partially correct 2 ms 256 KB Partially correct
10 Partially correct 2 ms 256 KB Partially correct
11 Partially correct 2 ms 256 KB Partially correct
12 Partially correct 2 ms 256 KB Partially correct
13 Partially correct 3 ms 288 KB Partially correct
14 Partially correct 2 ms 256 KB Partially correct
15 Partially correct 2 ms 256 KB Partially correct
16 Partially correct 2 ms 256 KB Partially correct
17 Partially correct 19 ms 256 KB Partially correct
18 Partially correct 18 ms 256 KB Partially correct
19 Partially correct 21 ms 384 KB Partially correct
20 Partially correct 20 ms 376 KB Partially correct
21 Partially correct 18 ms 256 KB Partially correct
22 Partially correct 17 ms 376 KB Partially correct
23 Partially correct 18 ms 376 KB Partially correct
24 Partially correct 19 ms 384 KB Partially correct
25 Partially correct 20 ms 384 KB Partially correct
26 Partially correct 19 ms 256 KB Partially correct