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Submission #298521

# Submission time Handle Problem Language Result Execution time Memory
298521 2020-09-13T04:14:40 Z TMJN Sorting (IOI15_sorting) C++17
100 / 100
 172 ms 20548 KB 
#include "sorting.h"
#include <bits/stdc++.h>
using namespace std;

int s[200000];
int k[200000];

int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
	bool f=true;
	for(int i=0;i<N;i++){
		if(S[i]!=i)f=false;
	}
	if(f)return 0;
	int l,r;
	l=-1;
	r=M;
	while(l+1!=r){
		int m=(l+r)/2;
		for(int i=0;i<N;i++){
			s[i]=S[i];
		}
		for(int i=0;i<=m;i++){
			swap(s[X[i]],s[Y[i]]);
		}
		for(int i=0;i<N;i++){
			k[s[i]]=i;
		}
		int c=0;
		for(int i=0;i<N;i++){
			if(s[i]!=i){
				c++;
				swap(s[i],s[k[i]]);
				swap(k[i],k[s[k[i]]]);
			}
		}
		if(c<=m+1){
			r=m;
		}
		else{
			l=m;
		}
	}
	for(int i=0;i<N;i++){
		s[i]=S[i];
	}
	for(int i=0;i<=r;i++){
		swap(s[X[i]],s[Y[i]]);
	}
	for(int i=0;i<N;i++){
		k[s[i]]=i;
	}
	vector<pair<int,int>>vp;
	for(int i=0;i<N;i++){
		if(s[i]!=i){
			vp.push_back({s[i],s[k[i]]});
			swap(s[i],s[k[i]]);
			swap(k[s[i]],k[s[k[i]]]);
		}
	}
	if(vp.size()!=r+1){
		vp.push_back({0,0});
	}
	for(int i=0;i<N;i++){
		s[i]=S[i];
	}
	for(int i=0;i<N;i++){
		k[s[i]]=i;
	}
	for(int i=0;i<=r;i++){
		swap(s[X[i]],s[Y[i]]);
		swap(k[s[X[i]]],k[s[Y[i]]]);
		P[i]=k[vp[i].first];
		Q[i]=k[vp[i].second];
		swap(s[P[i]],s[Q[i]]);
		swap(k[s[P[i]]],k[s[Q[i]]]);
	}
	return r+1;
}

Compilation message

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:60:14: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   60 |  if(vp.size()!=r+1){
      |     ~~~~~~~~~^~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 2 ms 512 KB Output is correct
22 Correct 1 ms 512 KB Output is correct
23 Correct 1 ms 640 KB Output is correct
24 Correct 1 ms 512 KB Output is correct
25 Correct 1 ms 512 KB Output is correct
26 Correct 1 ms 512 KB Output is correct
27 Correct 1 ms 512 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 512 KB Output is correct
2 Correct 2 ms 512 KB Output is correct
3 Correct 2 ms 512 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 2 ms 512 KB Output is correct
7 Correct 2 ms 512 KB Output is correct
8 Correct 2 ms 512 KB Output is correct
9 Correct 2 ms 512 KB Output is correct
10 Correct 2 ms 512 KB Output is correct
11 Correct 2 ms 512 KB Output is correct
12 Correct 2 ms 512 KB Output is correct
13 Correct 2 ms 544 KB Output is correct
14 Correct 1 ms 512 KB Output is correct

Subtask #6
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 512 KB Output is correct
2 Correct 2 ms 512 KB Output is correct
3 Correct 2 ms 512 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 2 ms 512 KB Output is correct
7 Correct 2 ms 512 KB Output is correct
8 Correct 2 ms 512 KB Output is correct
9 Correct 2 ms 512 KB Output is correct
10 Correct 2 ms 512 KB Output is correct
11 Correct 2 ms 512 KB Output is correct
12 Correct 2 ms 512 KB Output is correct
13 Correct 2 ms 544 KB Output is correct
14 Correct 1 ms 512 KB Output is correct
15 Correct 136 ms 18040 KB Output is correct
16 Correct 152 ms 18524 KB Output is correct
17 Correct 168 ms 19472 KB Output is correct
18 Correct 45 ms 13432 KB Output is correct
19 Correct 135 ms 17836 KB Output is correct
20 Correct 145 ms 18388 KB Output is correct
21 Correct 141 ms 18496 KB Output is correct
22 Correct 127 ms 14840 KB Output is correct
23 Correct 150 ms 20316 KB Output is correct
24 Correct 167 ms 19956 KB Output is correct
25 Correct 172 ms 19716 KB Output is correct
26 Correct 139 ms 18392 KB Output is correct
27 Correct 132 ms 17752 KB Output is correct
28 Correct 162 ms 19792 KB Output is correct
29 Correct 157 ms 19152 KB Output is correct
30 Correct 104 ms 17160 KB Output is correct
31 Correct 162 ms 19768 KB Output is correct
32 Correct 151 ms 19552 KB Output is correct
33 Correct 172 ms 19972 KB Output is correct
34 Correct 158 ms 19832 KB Output is correct
35 Correct 134 ms 17672 KB Output is correct
36 Correct 68 ms 15992 KB Output is correct
37 Correct 172 ms 20548 KB Output is correct
38 Correct 170 ms 19716 KB Output is correct
39 Correct 164 ms 19832 KB Output is correct