oj.uz

Submission #893207

# Submission time Handle Problem Language Result Execution time Memory
893207 2023-12-26T17:32:31 Z vjudge1 Ancient Books (IOI17_books) C++17
0 / 100
 0 ms 348 KB 
#include "books.h"

#include <bits/stdc++.h>

using namespace std;

using ll = long long;
using vll = vector<ll>;
using vi = vector<int>;
using ii = pair<int, int>;

struct UF {
    vi e;
    UF(int N) : e(N, -1) {}
    int repr(int u) {
        while(e[u] >= 0) u = e[u];
        return u;
    }

    int join(int u, int v) {
        u = repr(u);
        v = repr(v);
        if(u == v) return 0;
        if(e[u] >= e[v]) swap(u, v);
        e[u] += e[v];
        e[v] = u;
        return 1;
    }
};

long long minimum_walk(vi p, int s) {
    int n = p.size();
    vi ip(n);
    for(int i = 0; i < n; ++i)
        ip[p[i]] = i;
    using ll = long long;
    ll re = 0, nrcic = 0;
    vi viz(n, 0), are_st(n, 0);
    for(int i = 0; i < n; ++i) {
        if(!viz[i]) {
            int u = i, mi = i;
            while(!viz[u]) {
                viz[u] = 1;
                u = p[u];
                mi = min(mi, u);
            }
            u = i;
            do {
                if(u > mi) are_st[u] = 1;
                u = p[u];
            } while(u != i);
            ++nrcic;
        }
    }
    vll dp(n, 0);
    for(int i = 1; i < n; ++i) {
        if(are_st[i]) dp[i] = dp[i - 1];
        else dp[i] = 2 + dp[i - 1];
    }
    for(int i = 0; i < n; ++i) {
        re += abs(p[i] - i);
    }
    for(int i = n - 1; i >= 0; --i) {
        if(p[i] != i) {
            re += dp[i];
            break;
        }
    }
    return re;
}

Subtask #1
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB 3rd lines differ - on the 1st token, expected: '6', found: '8'
3 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB 3rd lines differ - on the 1st token, expected: '6', found: '8'
3 Halted 0 ms 0 KB -

Subtask #3
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB 3rd lines differ - on the 1st token, expected: '6', found: '8'
3 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB 3rd lines differ - on the 1st token, expected: '3304', found: '4186'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB 3rd lines differ - on the 1st token, expected: '6', found: '8'
3 Halted 0 ms 0 KB -