Submission #621125

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
621125	2022-08-03 12:35:41	Bench0310	Sorting (IOI15_sorting)	C++17	100 / 100	245 ms	25536 KiB

sorting

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#include <bits/stdc++.h>
#include "sorting.h"
using namespace std;
typedef long long ll;
int findSwapPairs(int n,int s[],int m,int x[],int y[],int p[],int q[])
{
    auto solve=[&](int mv)->vector<array<int,2>>
    {
        vector<int> f(n,-1);
        for(int i=0;i<n;i++) f[i]=s[i];
        for(int i=0;i<mv;i++) swap(f[x[i]],f[y[i]]);
        vector<bool> vis(n,0);
        vector<array<int,2>> v;
        for(int i=0;i<n;i++)
        {
            if(vis[i]) continue;
            int b=i;
            int a=i;
            while(!vis[a])
            {
                vis[a]=1;
                a=f[a];
                if(!vis[a]) v.push_back({b,a});
            }
        }
        int sz=v.size();
        if(sz<=mv)
        {
 
 
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Compilation message (stderr)

sorting.cpp: In lambda function:
sorting.cpp:28:22: warning: conversion from 'std::vector<std::array<int, 2> >::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   28 |         int sz=v.size();
      |                ~~~~~~^~

• Subtask 1: 8 / 8
• Subtask 2: 12 / 12
• Subtask 3: 16 / 16
• Subtask 4: 18 / 18
• Subtask 5: 20 / 20
• Subtask 6: 26 / 26