oj.uz

Submission #1029058

# Submission time Handle Problem Language Result Execution time Memory
1029058 2024-07-20T11:49:18 Z amirhoseinfar1385 Ancient Books (IOI17_books) C++17
0 / 100
 4 ms 4696 KB 
#include"books.h"
#include <vector>
#include<bits/stdc++.h>
const int maxn=1000000+10;
using namespace std;
int vis[maxn],visa[maxn],av[maxn];
int n;
long long mainres=0,last=0;
vector<pair<int,pair<int,int>>>alle;

struct dsu{
	int par[maxn];
	dsu(){
		for(int i=0;i<maxn;i++){
			par[i]=i;
		}
	}
	void clear(){
		for(int i=0;i<maxn;i++){
			par[i]=i;
		}
	}	
	int root(int u){
		if(u==par[u]){
			return u;
		}
		return par[u]=root(par[u]);
	}
	int con(int u,int v){
		u=root(u);
		v=root(v);
		if(u==v){
			return 0;
		}
		par[u]=v;
		return 1;
	}
}ds;

void mst(){
	ds.clear();
	sort(alle.begin(),alle.end());
	for(int i=0;i<(int)alle.size();i++){
		if(ds.con(alle[i].second.first,alle[i].second.second)){
			mainres+=alle[i].first;
		}
	}
}

long long minimum_walk(std::vector<int> p, int s){
	mainres=0;
	n=p.size();
	for(int i=0;i<=n;i++){
		vis[i]=visa[i]=0;
	}
	last=0;
	int cnt1=0;
	for(int i=0;i<n;i++){
		if(p[i]>i){
			cnt1++;
			visa[p[i]]=1;
		}
		if(visa[i]){
			cnt1--;
		}
		mainres+=cnt1*2;
		if(cnt1!=0){
			last=i+1;
		}
	}
	for(int i=0;i<=last;i++){
		if(i==p[i]){
			continue;
		}
		if(vis[i]==0){
			//mainres+=2;
			int now=i;
			do{
				av[now]=i;
				vis[now]=1;
				now=p[now];
			}while(now!=i);
		}
	}
	last=-1;
	alle.clear();
	for(int i=0;i<n;i++){
		if(i==s){
			last=i;
		}
		if(vis[i]){
			if(last!=-1){
				alle.push_back(make_pair((i-last)*2,make_pair(av[i],av[last])));
			}
			last=i;
		}
	}
	mst();
	return mainres;
}

Subtask #1
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4696 KB Output is correct
2 Correct 4 ms 4188 KB Output is correct
3 Correct 2 ms 4188 KB Output is correct
4 Correct 2 ms 4188 KB Output is correct
5 Correct 2 ms 4188 KB Output is correct
6 Incorrect 3 ms 4188 KB 3rd lines differ - on the 1st token, expected: '8', found: '10'
7 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4696 KB Output is correct
2 Correct 4 ms 4188 KB Output is correct
3 Correct 2 ms 4188 KB Output is correct
4 Correct 2 ms 4188 KB Output is correct
5 Correct 2 ms 4188 KB Output is correct
6 Incorrect 3 ms 4188 KB 3rd lines differ - on the 1st token, expected: '8', found: '10'
7 Halted 0 ms 0 KB -

Subtask #3
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4696 KB Output is correct
2 Correct 4 ms 4188 KB Output is correct
3 Correct 2 ms 4188 KB Output is correct
4 Correct 2 ms 4188 KB Output is correct
5 Correct 2 ms 4188 KB Output is correct
6 Incorrect 3 ms 4188 KB 3rd lines differ - on the 1st token, expected: '8', found: '10'
7 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 4440 KB 3rd lines differ - on the 1st token, expected: '3304', found: '4074'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4696 KB Output is correct
2 Correct 4 ms 4188 KB Output is correct
3 Correct 2 ms 4188 KB Output is correct
4 Correct 2 ms 4188 KB Output is correct
5 Correct 2 ms 4188 KB Output is correct
6 Incorrect 3 ms 4188 KB 3rd lines differ - on the 1st token, expected: '8', found: '10'
7 Halted 0 ms 0 KB -