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Submission #1090968

# Submission time Handle Problem Language Result Execution time Memory
1090968 2024-09-19T09:08:50 Z owoovo Sorting (IOI15_sorting) C++17
74 / 100
 214 ms 15956 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++;
			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];
		}
	}
	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 344 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 344 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 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 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 0 ms 348 KB Output is correct
3 Correct 1 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

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 344 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 604 KB Output is correct
26 Correct 1 ms 856 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 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 604 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 604 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 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 604 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 604 KB Output is correct
15 Correct 171 ms 14340 KB Output is correct
16 Correct 183 ms 14676 KB Output is correct
17 Correct 192 ms 15436 KB Output is correct
18 Correct 56 ms 13356 KB Output is correct
19 Correct 125 ms 15200 KB Output is correct
20 Correct 134 ms 15444 KB Output is correct
21 Correct 136 ms 15444 KB Output is correct
22 Correct 186 ms 15704 KB Output is correct
23 Correct 201 ms 15956 KB Output is correct
24 Correct 214 ms 15696 KB Output is correct
25 Correct 201 ms 15400 KB Output is correct
26 Incorrect 132 ms 14928 KB Expected integer, but "?" found
27 Halted 0 ms 0 KB -