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Submission #986371

# Submission time Handle Problem Language Result Execution time Memory
986371 2024-05-20T11:22:55 Z Pyqe Sorting (IOI15_sorting) C++17
100 / 100
 140 ms 25392 KB 
#include "sorting.h"
#include <bits/stdc++.h>

using namespace std;

long long a[200069],dsu[200069],pst[200069],pr[200069];

long long fd(long long x)
{
	if(dsu[x]!=x)
	{
		dsu[x]=fd(dsu[x]);
	}
	return dsu[x];
}

int findSwapPairs(int n,int aa[],int m,int ka[],int la[],int sq[],int sq2[])
{
	long long i,j,lh,rh,md,zz,c;
	
	for(lh=0,rh=m;lh<=rh;)
	{
		md=(lh+rh)/2;
		for(i=0;i<n;i++)
		{
			a[i]=aa[i];
			dsu[i]=i;
		}
		for(i=0;i<md;i++)
		{
			swap(a[ka[i]],a[la[i]]);
		}
		c=0;
		for(i=0;i<n;i++)
		{
			c+=fd(i)!=fd(a[i]);
			dsu[fd(i)]=fd(a[i]);
		}
		if(c<=md)
		{
			zz=md;
			rh=md-1;
		}
		else
		{
			lh=md+1;
		}
	}
	for(i=0;i<n;i++)
	{
		a[i]=aa[i];
		pst[i]=i;
		pr[i]=i;
	}
	for(i=0;i<zz;i++)
	{
		swap(a[ka[i]],a[la[i]]);
		sq[i]=0;
		sq2[i]=0;
	}
	for(i=zz-1;i+1;i--)
	{
		swap(pst[pr[ka[i]]],pst[pr[la[i]]]);
		swap(pr[ka[i]],pr[la[i]]);
	}
	for(j=0,i=0;i<zz;i++)
	{
		swap(pst[pr[ka[i]]],pst[pr[la[i]]]);
		swap(pr[ka[i]],pr[la[i]]);
		for(;j<n&&a[j]==j;j++);
		if(j==n)
		{
			break;
		}
		sq[i]=pst[j];
		sq2[i]=pst[a[j]];
		swap(a[j],a[a[j]]);
	}
	return zz;
}

Compilation message

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:75:14: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   75 |   sq[i]=pst[j];
      |         ~~~~~^
sorting.cpp:76:18: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   76 |   sq2[i]=pst[a[j]];
      |          ~~~~~~~~^
sorting.cpp:79:9: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   79 |  return zz;
      |         ^~
sorting.cpp:55:11: warning: 'zz' may be used uninitialized in this function [-Wmaybe-uninitialized]
   55 |  for(i=0;i<zz;i++)
      |          ~^~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 2 ms 4444 KB Output is correct
3 Correct 1 ms 4552 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 2 ms 4444 KB Output is correct
3 Correct 1 ms 4552 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4540 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4540 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4452 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 2 ms 4444 KB Output is correct
3 Correct 1 ms 4552 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4540 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4540 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4452 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4444 KB Output is correct
19 Correct 1 ms 4444 KB Output is correct
20 Correct 1 ms 4444 KB Output is correct
21 Correct 2 ms 4700 KB Output is correct
22 Correct 2 ms 4700 KB Output is correct
23 Correct 1 ms 4700 KB Output is correct
24 Correct 2 ms 4700 KB Output is correct
25 Correct 1 ms 4700 KB Output is correct
26 Correct 2 ms 4700 KB Output is correct
27 Correct 2 ms 4700 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4552 KB Output is correct
2 Correct 2 ms 4700 KB Output is correct
3 Correct 2 ms 4700 KB Output is correct
4 Correct 1 ms 4700 KB Output is correct
5 Correct 2 ms 4700 KB Output is correct
6 Correct 1 ms 4700 KB Output is correct
7 Correct 2 ms 4700 KB Output is correct
8 Correct 2 ms 4560 KB Output is correct
9 Correct 2 ms 4700 KB Output is correct
10 Correct 2 ms 4700 KB Output is correct
11 Correct 1 ms 4700 KB Output is correct
12 Correct 2 ms 4700 KB Output is correct
13 Correct 2 ms 4700 KB Output is correct
14 Correct 1 ms 4560 KB Output is correct

Subtask #6
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4552 KB Output is correct
2 Correct 2 ms 4700 KB Output is correct
3 Correct 2 ms 4700 KB Output is correct
4 Correct 1 ms 4700 KB Output is correct
5 Correct 2 ms 4700 KB Output is correct
6 Correct 1 ms 4700 KB Output is correct
7 Correct 2 ms 4700 KB Output is correct
8 Correct 2 ms 4560 KB Output is correct
9 Correct 2 ms 4700 KB Output is correct
10 Correct 2 ms 4700 KB Output is correct
11 Correct 1 ms 4700 KB Output is correct
12 Correct 2 ms 4700 KB Output is correct
13 Correct 2 ms 4700 KB Output is correct
14 Correct 1 ms 4560 KB Output is correct
15 Correct 122 ms 21736 KB Output is correct
16 Correct 125 ms 22028 KB Output is correct
17 Correct 127 ms 23500 KB Output is correct
18 Correct 55 ms 19364 KB Output is correct
19 Correct 98 ms 24252 KB Output is correct
20 Correct 106 ms 24916 KB Output is correct
21 Correct 115 ms 24908 KB Output is correct
22 Correct 100 ms 18512 KB Output is correct
23 Correct 128 ms 23888 KB Output is correct
24 Correct 125 ms 23636 KB Output is correct
25 Correct 140 ms 23920 KB Output is correct
26 Correct 103 ms 22864 KB Output is correct
27 Correct 89 ms 22104 KB Output is correct
28 Correct 140 ms 23496 KB Output is correct
29 Correct 126 ms 23632 KB Output is correct
30 Correct 73 ms 21600 KB Output is correct
31 Correct 130 ms 24036 KB Output is correct
32 Correct 112 ms 22952 KB Output is correct
33 Correct 124 ms 25392 KB Output is correct
34 Correct 120 ms 23752 KB Output is correct
35 Correct 93 ms 22124 KB Output is correct
36 Correct 46 ms 20540 KB Output is correct
37 Correct 129 ms 24908 KB Output is correct
38 Correct 130 ms 23692 KB Output is correct
39 Correct 127 ms 24256 KB Output is correct