Submission #598174

#	Time	Username	Problem	Language	Result	Execution time	Memory
598174		yanndev	Ancient Books (IOI17_books)	C++17	0 / 100	1 ms	304 KiB

books

#include <bits/stdc++.h>
#define ll long long
using namespace std;

ll minimum_walk(vector<int> p, int s) {
    ll ans = 0;
    int n = (int)p.size();
    vector<vector<int>> cycles {};
    vector<bool> vis (n, false);
    int last = 0;
    for (int i = 0; i < n; i++) {
        if (vis[i])
            continue;
        
        ans += abs(i - last);
        int pos = i;
        last = i;
        cycles.push_back({});
        while (!vis[pos]) {
            vis[pos] = true;
            cycles.back().push_back(pos);
            ans += abs(p[pos] - pos);
            pos = p[pos];
        }
    }

    ans += last;
    return ans;
}

• Subtask 1: 0 / 12
• Subtask 2: 0 / 10
• Subtask 3: 0 / 28
• Subtask 4: 0 / 20
• Subtask 5: 0 / 30