Submission #767308

#	Time	Username	Problem	Language	Result	Execution time	Memory
767308		raysh07	Ancient Books (IOI17_books)	C++17	0 / 100	1 ms	296 KiB

books

#include "books.h"
#include <bits/stdc++.h>
using namespace std;

long long minimum_walk(vector<int> a, int s) {
	if (s != 0) return 0;
	
	long long ans = 0;
	int n = a.size();
	vector <bool> solved(n, false);
	int cnt = 0;
	int x = s;
	for (int i = 0; i < n; i++){
	    if (a[i] == i) {
	        solved[i] = true;
	        cnt++;
	    }
	}
	while (cnt < n){
	 //   cout << s << " " << ans << "\n";
	    if (solved[s]){
	        s++;
	        ans++;
	        continue;
	    }
	    
	    int ok = abs(a[s] - s);
	 //   cout << ok << "\n";
	    ans += ok;
	    solved[s] = true;
	    cnt++;
	    s = a[s];
	}
	ans += abs(x - s);
	
	return ans;
}

// int main(){
//     int n, s; cin >> n >> s;
//     vector <int> a(n);
//     for (auto &x : a) cin >> x;
    
//     cout << minimum_walk(a, s) << "\n";
// }

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