oj.uz

Submission #401095

# Submission time Handle Problem Language Result Execution time Memory
401095 2021-05-09T10:58:34 Z kshitij_sodani Sorting (IOI15_sorting) C++14
36 / 100
 1000 ms 884 KB 
//#pragma GCC optimize("Ofast,unroll-loops")
#include <bits/stdc++.h>
using namespace std;
typedef long long llo;
#define mp make_pair
#define pb push_back
#define a first 
#define b second
//#define endl '\n'

#include "sorting.h"
//int cur[200001];
int it[200001];
int n;
int xx[3*200001];
int yy[3*200001];
int pp[3*200001];
int qq[3*200001];
int cur[200001];//position in which it  has to end up
int cur2[200001];//position in which number is currently ends in
//int cur3[2000001];//position which indes up in 

bool check(int mid){
	for(int i=0;i<n;i++){
		cur[i]=it[i];
	}
	/*for(int i=0;i<n;i++){
		cout<<cur[i]<<"<";
	}
	cout<<endl;
	cout<<mid<<",,"<<endl;*/
	for(int i=0;i<mid;i++){
		swap(cur[xx[i]],cur[yy[i]]);
		/*for(int ii=0;ii<n;ii++){
			cout<<cur[ii]<<"/";
		}*/
		//cout<<endl;
		//cout<<xx[i]<<"<<"<<yy[i]<<endl;
		for(int ii=0;ii<n;ii++){
			cur2[ii]=ii;
		}
		for(int j=i+1;j<mid;j++){
			swap(cur2[xx[j]],cur2[yy[j]]);
		}
		int ind=-1;
		for(int j=0;j<n;j++){
			if(cur2[j]!=cur[j]){
				ind=j;
				break;
			}
		}
		//cout<<ind<<":"<<endl;
		if(ind==-1){
			pp[i]=0;
			qq[i]=0;
		}
		else{
			int ind2=-1;
			for(int j=0;j<n;j++){
				if(cur2[j]==cur[ind]){
					ind2=j;
					break;
				}
			}	
			//cout<<ind<<",,,"<<ind2<<endl;
			swap(cur[ind2],cur[ind]);
			pp[i]=ind;
			qq[i]=ind2;		

		}

		/*for(int j=0;j<mid;j++){

		}*/

	}
	for(int i=0;i<n;i++){
		if(cur[i]!=i){
			return false;
		}
	}
/*	for(int i=0;i<n;i++){
		cout<<cur[i]<<"<";
	}
	cout<<endl;*/
	return true;
}
int findSwapPairs(int nn, int aa[], int m, int x[], int y[], int p[], int q[]){
	n=nn;
	for(int i=0;i<n;i++){
		it[i]=aa[i];
		//cout<<it[i]<<",";
	}
	//cout<<endl;

	for(int i=0;i<m;i++){
		xx[i]=x[i];
		yy[i]=y[i];
	}
	int low=-1;
	for(int j=19;j>=0;j--){
		if(low+(1<<j)<=m){
			if(check(low+(1<<j))==false){
				low+=(1<<j);
			}
		}

	}
	low+=1;
	//cout<<low<<":"<<endl;
	check(low);
	for(int i=0;i<low;i++){
		p[i]=pp[i];
		q[i]=qq[i];
	}
	return low;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 304 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 11 ms 424 KB Output is correct
11 Correct 11 ms 412 KB Output is correct
12 Correct 12 ms 320 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 11 ms 332 KB Output is correct
4 Correct 12 ms 332 KB Output is correct
5 Correct 12 ms 428 KB Output is correct
6 Correct 1 ms 332 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 304 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 11 ms 424 KB Output is correct
11 Correct 11 ms 412 KB Output is correct
12 Correct 12 ms 320 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 11 ms 332 KB Output is correct
16 Correct 12 ms 332 KB Output is correct
17 Correct 12 ms 428 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 300 KB Output is correct
21 Execution timed out 1064 ms 884 KB Time limit exceeded
22 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 150 ms 460 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 26.0

# Verdict Execution time Memory Grader output
1 Incorrect 150 ms 460 KB Output isn't correct
2 Halted 0 ms 0 KB -