oj.uz

Submission #1090967

# Submission time Handle Problem Language Result Execution time Memory
1090967 2024-09-19T09:07:46 Z owoovo Sorting (IOI15_sorting) C++17
74 / 100
 205 ms 15952 KB 
#include "sorting.h"
#include<bits/stdc++.h>
using namespace std;
int tar[1000010],tarp[1000010],n,x[1000010],y[1000010],s[1000010];

int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
	n=N;
	for(int i=0;i<M;i++){
		x[i+1]=X[i];
		y[i+1]=Y[i];
	}
	int l=0,r=M;
	while(l!=r){
		int m=(l+r)>>1,ok=1;
		//cout<<l<<" "<<r<<" "<<m<<"\n";
		for(int i=0;i<N;i++){
			tar[i]=i;
			s[i]=S[i];
		}
		for(int i=m;i>0;i--){
			swap(tar[x[i]],tar[y[i]]);
		}
		for(int i=0;i<N;i++){
			tarp[tar[i]]=i;
		}
		int ans=0;
		for(int i=0;i<N;i++){
			if(s[i]==tar[i])continue;
			int ori=i;
			while(tarp[s[ori]]!=ori){
				P[ans]=tarp[s[ori]];
				Q[ans]=ori;
				swap(s[tarp[s[ori]]],s[ori]);
				ans++;
			}
		}
		if(ans>m){
			l=m+1;
		}else{
			r=m;
		}
	}

	int m=l;
	for(int i=0;i<N;i++){
		tar[i]=i;
		s[i]=S[i];
	}
	for(int i=m;i>0;i--){
		swap(tar[x[i]],tar[y[i]]);
	}
	for(int i=0;i<N;i++){	
		tarp[tar[i]]=i;
	}
	if(m!=0){
		swap(tar[x[1]],tar[y[1]]);
		swap(s[x[1]],s[y[1]]);
		tarp[tar[x[1]]]=x[1];
		tarp[tar[y[1]]]=y[1];
	}
	int ans=0;
	for(int i=0;i<N;i++){
		//cout<<s[i]<<" "<<tar[i]<<"\n";
		if(s[i]==tar[i])continue;
		int ori=i;
		while(ori!=tarp[s[ori]]){
			//cout<<now<<" "<<ori<<"\n";
			P[ans]=tarp[s[ori]];
			Q[ans]=ori;
			swap(s[tarp[s[ori]]],s[ori]);
			ans++;
			if(ans>=m)break;
			swap(tar[x[ans+1]],tar[y[ans+1]]);
			swap(s[x[ans+1]],s[y[ans+1]]);
			tarp[tar[x[ans+1]]]=x[ans+1];
			tarp[tar[y[ans+1]]]=y[ans+1];
		}
		if(ans>=m)break;
	}
	for(int i=0;i<N;i++){
		if(!(s[i]>=0&&s[i]<N)){
			cout<<"!\n";
		}
		if(s[i]!=tar[i]){
			cout<<"?\n";
		}
	}
	for(int i=ans;i<m;i++)Q[i]=0,P[i]=0;
	return l;
}

Compilation message

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:14:18: warning: unused variable 'ok' [-Wunused-variable]
   14 |   int m=(l+r)>>1,ok=1;
      |                  ^~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 600 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 1 ms 604 KB Output is correct
23 Correct 1 ms 604 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 1 ms 600 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 1 ms 604 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 2 ms 600 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 348 KB Output is correct

Subtask #6
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 2 ms 600 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 173 ms 14424 KB Output is correct
16 Correct 183 ms 14624 KB Output is correct
17 Correct 205 ms 15444 KB Output is correct
18 Correct 62 ms 13140 KB Output is correct
19 Correct 132 ms 15184 KB Output is correct
20 Correct 128 ms 15444 KB Output is correct
21 Correct 125 ms 15452 KB Output is correct
22 Correct 171 ms 15592 KB Output is correct
23 Correct 190 ms 15952 KB Output is correct
24 Correct 196 ms 15820 KB Output is correct
25 Correct 189 ms 15520 KB Output is correct
26 Incorrect 126 ms 14928 KB Expected integer, but "?" found
27 Halted 0 ms 0 KB -