oj.uz

Submission #1047207

# Submission time Handle Problem Language Result Execution time Memory
1047207 2024-08-07T10:36:54 Z Ahmed57 Ancient Books (IOI17_books) C++17
0 / 100
 1 ms 348 KB 
#include "bits/stdc++.h"
using namespace std;
vector<int> P;
int vis[1001];
int mn = 1e9 ,mx = -1e9;
void dfs(int i){
    vis[i] = 1;
    mn = min(mn,i);
    mx = max(mx,i);
    if(!vis[P[i]])dfs(P[i]);
}
long long minimum_walk(vector<int> p, int s){
    int ans = 0;
    int n = p.size();
    P.clear();
    for(int i = 0;i<n;i++){
        vis[i] = 0;
        P.push_back(p[i]);
        ans+=abs(i-p[i]);
    }
    vector<pair<int,int>> lol;
    for(int i = 0;i<n;i++){
        if(!vis[i]){
            mn = 1e9 , mx = -1e9;
            dfs(i);
            lol.push_back({mn,mx});
        }
    }
    sort(lol.begin(),lol.end());
    int R = -1e9;
    int sz = 0;
    for(int i = 0;i<lol.size();i++){
        if(R<lol[i].first){
            R = lol[i].second;
            sz++;
        }else{
            R = max(R,lol[i].second);
        }
    }
    for(int i = lol.size()-1;i>=0;i--){
        if(lol[i].first==lol[i].second){
            sz--;
        }else break;
    }
    ans+=(sz-1)*2;
    return ans;
}

Compilation message

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:32:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |     for(int i = 0;i<lol.size();i++){
      |                   ~^~~~~~~~~~~

Subtask #1
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB 3rd lines differ - on the 1st token, expected: '6', found: '4'
3 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB 3rd lines differ - on the 1st token, expected: '6', found: '4'
3 Halted 0 ms 0 KB -

Subtask #3
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB 3rd lines differ - on the 1st token, expected: '6', found: '4'
3 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB 3rd lines differ - on the 1st token, expected: '3304', found: '2740'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB 3rd lines differ - on the 1st token, expected: '6', found: '4'
3 Halted 0 ms 0 KB -