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Submission #1080688

# Submission time Handle Problem Language Result Execution time Memory
1080688 2024-08-29T12:49:48 Z andrei_iorgulescu Ancient Books (IOI17_books) C++14
0 / 100
 1 ms 4708 KB 
#include <bits/stdc++.h>
#include "books.h"
#warning That's not FB, that's my FB

using namespace std;

using ll = long long;

int n, s;
int p[1000005], pos[1000005];
vector<vector<int>> cyc;
vector<int> cur;
bool viz[1000005];

void dfs(int nod)
{
    viz[nod] = true;
    cur.push_back(nod);
    if (!viz[p[nod]])
        dfs(p[nod]);
}

ll minimum_walk(vector<int> PERM, int STR)
{
    cyc.clear();
    memset(viz,0,sizeof(viz));
    n = PERM.size();
    for (int i = 1; i <= n; i++)
        p[i] = PERM[i - 1] + 1, pos[p[i]] = i;
    s = STR;
    for (int i = 1; i <= n; i++)
    {
        if (!viz[i])
        {
            cur.clear();
            dfs(i);
            cyc.push_back(cur);
        }
    }
    ll ans = 0;
    for (auto it : cyc)
        if (it.size() != 1)
            ans = max(ans, 2ll * it[0]);
    for (auto it : cyc)
    {
        for (int i = 0; i + 1 < it.size(); i++)
            ans += abs(it[i] - it[i + 1]);
    }
    return ans;
}

Compilation message

books.cpp:3:2: warning: #warning That's not FB, that's my FB [-Wcpp]
    3 | #warning That's not FB, that's my FB
      |  ^~~~~~~
books.cpp: In function 'll minimum_walk(std::vector<int>, int)':
books.cpp:46:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |         for (int i = 0; i + 1 < it.size(); i++)
      |                         ~~~~~~^~~~~~~~~~~

Subtask #1
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4696 KB Output is correct
2 Correct 1 ms 4708 KB Output is correct
3 Correct 1 ms 4700 KB Output is correct
4 Incorrect 0 ms 2652 KB 3rd lines differ - on the 1st token, expected: '4', found: '5'
5 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4696 KB Output is correct
2 Correct 1 ms 4708 KB Output is correct
3 Correct 1 ms 4700 KB Output is correct
4 Incorrect 0 ms 2652 KB 3rd lines differ - on the 1st token, expected: '4', found: '5'
5 Halted 0 ms 0 KB -

Subtask #3
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4696 KB Output is correct
2 Correct 1 ms 4708 KB Output is correct
3 Correct 1 ms 4700 KB Output is correct
4 Incorrect 0 ms 2652 KB 3rd lines differ - on the 1st token, expected: '4', found: '5'
5 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 4700 KB 3rd lines differ - on the 1st token, expected: '3304', found: '3426'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4696 KB Output is correct
2 Correct 1 ms 4708 KB Output is correct
3 Correct 1 ms 4700 KB Output is correct
4 Incorrect 0 ms 2652 KB 3rd lines differ - on the 1st token, expected: '4', found: '5'
5 Halted 0 ms 0 KB -