제출 #877067

#제출 시각아이디문제언어결과실행 시간메모리
877067raul2008487Arranging Shoes (IOI19_shoes)C++17
컴파일 에러
0 ms0 KiB
#include "shoes.h" #include<bits/stdc++.h> #define ll long long #define pb push_back #define all(v) v.begin(), v.end() #define fi first #define se second #define in insert using namespace std; const int sz = 2e5+5; ll Tree[sz]; void add(ll pos, ll val){ for(ll i = pos; i<sz ; i += (i & (-i))){ Tree[i] += val; } } ll get(ll pos){ ll rx = 0; for(ll i = pos; i>0; i -= (i & (-i))){ rx += Tree[i]; } return rx; } ll ask(ll l, ll r){ return get(r) - get(l-1); } long long count_swaps(vector<int> s) { ll n = s.size(), i, j, ans = 0; set<pair<ll,ll>> c; for(i=0;i<n;i++){ c.in({s[i], i}); add(i+1, 1); } while(s.size()){ auto x = s.begin(); pair<ll,ll> fr = (*x); auto f = c.lower_bound({-fr.fi, fr.se}); ll pr = (*f).se; if(pr > (fr.se + 1)){ ans += ask(fr.se+2, pr); } if(fr.fi > 0){ ans++; } add(fr.fi+1, -1); add(pr+1, -1); s.erase(x); s.erase(f); } return ans; }

컴파일 시 표준 에러 (stderr) 메시지

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:36:27: error: conversion from 'int' to non-scalar type 'std::pair<long long int, long long int>' requested
   36 |         pair<ll,ll> fr = (*x);
      |                          ~^~~
shoes.cpp:48:18: error: no matching function for call to 'std::vector<int>::erase(std::_Rb_tree_const_iterator<std::pair<long long int, long long int> >&)'
   48 |         s.erase(f);
      |                  ^
In file included from /usr/include/c++/10/vector:67,
                 from shoes.h:5,
                 from shoes.cpp:1:
/usr/include/c++/10/bits/stl_vector.h:1430:7: note: candidate: 'std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::erase(std::vector<_Tp, _Alloc>::const_iterator) [with _Tp = int; _Alloc = std::allocator<int>; std::vector<_Tp, _Alloc>::iterator = std::vector<int>::iterator; std::vector<_Tp, _Alloc>::const_iterator = std::vector<int>::const_iterator]'
 1430 |       erase(const_iterator __position)
      |       ^~~~~
/usr/include/c++/10/bits/stl_vector.h:1430:28: note:   no known conversion for argument 1 from 'std::_Rb_tree_const_iterator<std::pair<long long int, long long int> >' to 'std::vector<int>::const_iterator'
 1430 |       erase(const_iterator __position)
      |             ~~~~~~~~~~~~~~~^~~~~~~~~~
/usr/include/c++/10/bits/stl_vector.h:1457:7: note: candidate: 'std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::erase(std::vector<_Tp, _Alloc>::const_iterator, std::vector<_Tp, _Alloc>::const_iterator) [with _Tp = int; _Alloc = std::allocator<int>; std::vector<_Tp, _Alloc>::iterator = std::vector<int>::iterator; std::vector<_Tp, _Alloc>::const_iterator = std::vector<int>::const_iterator]'
 1457 |       erase(const_iterator __first, const_iterator __last)
      |       ^~~~~
/usr/include/c++/10/bits/stl_vector.h:1457:7: note:   candidate expects 2 arguments, 1 provided
shoes.cpp:28:22: warning: unused variable 'j' [-Wunused-variable]
   28 |  ll n = s.size(), i, j, ans = 0;
      |                      ^