Submission #598173

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
598173	2022-07-17T18:38:44 Z	yanndev	Ancient Books (IOI17_books)	C++17	Compilation error	0 ms	0 KB

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;
}

Compilation message

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:18:26: error: no matching function for call to 'std::vector<std::vector<int> >::push_back()'
   18 |         cycles.push_back();
      |                          ^
In file included from /usr/include/c++/10/vector:67,
                 from /usr/include/c++/10/functional:62,
                 from /usr/include/c++/10/pstl/glue_algorithm_defs.h:13,
                 from /usr/include/c++/10/algorithm:74,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from books.cpp:1:
/usr/include/c++/10/bits/stl_vector.h:1187:7: note: candidate: 'void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = std::vector<int>; _Alloc = std::allocator<std::vector<int> >; std::vector<_Tp, _Alloc>::value_type = std::vector<int>]'
 1187 |       push_back(const value_type& __x)
      |       ^~~~~~~~~
/usr/include/c++/10/bits/stl_vector.h:1187:7: note:   candidate expects 1 argument, 0 provided
/usr/include/c++/10/bits/stl_vector.h:1203:7: note: candidate: 'void std::vector<_Tp, _Alloc>::push_back(std::vector<_Tp, _Alloc>::value_type&&) [with _Tp = std::vector<int>; _Alloc = std::allocator<std::vector<int> >; std::vector<_Tp, _Alloc>::value_type = std::vector<int>]'
 1203 |       push_back(value_type&& __x)
      |       ^~~~~~~~~
/usr/include/c++/10/bits/stl_vector.h:1203:7: note:   candidate expects 1 argument, 0 provided