제출 #133830

#제출 시각아이디문제언어결과실행 시간메모리
133830MetBRoller Coaster Railroad (IOI16_railroad)C++14
컴파일 에러
0 ms0 KiB
#include <algorithm> #include <iostream> #include <string.h> #include <cstdlib> #include <vector> #include <string> #include <bitset> #include <math.h> #include <queue> #include <stack> #include <set> #include <map> typedef long long ll; typedef long double ld; const ll MOD = 1e9 + 7, INF = 1e18 + 1; using namespace std; int p[1000000], sz[1000000]; set <int> mp; struct stop { int x; bool op, left; bool operator < (const stop& b) { if (x == b.x) return op > b.op; else return x < b.x; } }; struct edge { int u, v; ll c; bool operator < (const edge& b) { return c < b.c; } }; vector <stop> v; int find (int x) { if (p[x] == x) return x; else return p[x] = find (p[x]); } void unite (int a, int b) { a = find (a); b = find (b); if (a == b) return; if (sz[a] < sz[b]) swap (a, b); p[b] = a; sz[a] += sz[b]; } int ind (int a, vector <ll>& s) { return lower_bound (s.begin(), s.end(), a) - s.begin (); } ll plan_roller_coaster (vector <int> s, vector <int> t) { ll ans = 0, balance = 0; vector <int> coord; for (int i = 0; i < s.size (); i++) { if (s[i] > t[i]) { v.push_back ({t[i], true, true}); v.push_back ({s[i], false, true}); } else { v.push_back ({s[i], true, false}); v.push_back ({t[i], false, false}); } mp.insert (s[i]); mp.insert (t[i]); } for (auto a : mp) coord.push_back (a); for (int i = 0; i < coord.size (); i++) { sz[i] = 1; p[i] = i; } v.push_back ({1, true, true}); v.push_back ({coord.back (), false, true}); for (int i = 0; i < s.size (); i++) unite (ind (s[i], coord), ind (t[i], coord)); sort (v.begin(), v.end()); vector <edge> tr; for (int i = 0; i < v.size (); i++) { if (v[i].left ^ v[i].op) balance++; else balance--; vector <edge> tr; if (i != v.size () - 1) { ans += max (0LL, balance * ll (v[i+1].x - v[i].x)); if (balance) unite (ind (v[i].x, coord), ind (v[i+1].x, coord)); else tr.push_back ({ind (v[i].x, coord), ind (v[i+1].x, coord), (v[i+1].x - v[i].x)}); } } sort (tr.begin(), tr.end()); for (edge e : tr) { if (find (e.u) != find (e.v)) { ans += e.c; unite (e.u, e.v); } } return ans; }

컴파일 시 표준 에러 (stderr) 메시지

railroad.cpp: In function 'll plan_roller_coaster(std::vector<int>, std::vector<int>)':
railroad.cpp:81:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < s.size (); i++)
                  ~~^~~~~~~~~~~
railroad.cpp:101:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < coord.size (); i++)
                  ~~^~~~~~~~~~~~~~~
railroad.cpp:110:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < s.size (); i++)
                  ~~^~~~~~~~~~~
railroad.cpp:111:26: error: invalid initialization of reference of type 'std::vector<long long int>&' from expression of type 'std::vector<int>'
   unite (ind (s[i], coord), ind (t[i], coord));
                          ^
railroad.cpp:70:5: note: in passing argument 2 of 'int ind(int, std::vector<long long int>&)'
 int ind (int a, vector <ll>& s)
     ^~~
railroad.cpp:111:45: error: invalid initialization of reference of type 'std::vector<long long int>&' from expression of type 'std::vector<int>'
   unite (ind (s[i], coord), ind (t[i], coord));
                                             ^
railroad.cpp:70:5: note: in passing argument 2 of 'int ind(int, std::vector<long long int>&)'
 int ind (int a, vector <ll>& s)
     ^~~
railroad.cpp:117:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < v.size (); i++)
                  ~~^~~~~~~~~~~
railroad.cpp:124:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if (i != v.size () - 1) 
       ~~^~~~~~~~~~~~~~~~
railroad.cpp:127:42: error: invalid initialization of reference of type 'std::vector<long long int>&' from expression of type 'std::vector<int>'
    if (balance) unite (ind (v[i].x, coord), ind (v[i+1].x, coord));
                                          ^
railroad.cpp:70:5: note: in passing argument 2 of 'int ind(int, std::vector<long long int>&)'
 int ind (int a, vector <ll>& s)
     ^~~
railroad.cpp:127:65: error: invalid initialization of reference of type 'std::vector<long long int>&' from expression of type 'std::vector<int>'
    if (balance) unite (ind (v[i].x, coord), ind (v[i+1].x, coord));
                                                                 ^
railroad.cpp:70:5: note: in passing argument 2 of 'int ind(int, std::vector<long long int>&)'
 int ind (int a, vector <ll>& s)
     ^~~
railroad.cpp:128:42: error: invalid initialization of reference of type 'std::vector<long long int>&' from expression of type 'std::vector<int>'
    else tr.push_back ({ind (v[i].x, coord), ind (v[i+1].x, coord), (v[i+1].x - v[i].x)});
                                          ^
railroad.cpp:70:5: note: in passing argument 2 of 'int ind(int, std::vector<long long int>&)'
 int ind (int a, vector <ll>& s)
     ^~~
railroad.cpp:128:65: error: invalid initialization of reference of type 'std::vector<long long int>&' from expression of type 'std::vector<int>'
    else tr.push_back ({ind (v[i].x, coord), ind (v[i+1].x, coord), (v[i+1].x - v[i].x)});
                                                                 ^
railroad.cpp:70:5: note: in passing argument 2 of 'int ind(int, std::vector<long long int>&)'
 int ind (int a, vector <ll>& s)
     ^~~
railroad.cpp:128:88: error: no matching function for call to 'std::vector<edge>::push_back(<brace-enclosed initializer list>)'
    else tr.push_back ({ind (v[i].x, coord), ind (v[i+1].x, coord), (v[i+1].x - v[i].x)});
                                                                                        ^
In file included from /usr/include/c++/7/vector:64:0,
                 from railroad.cpp:5:
/usr/include/c++/7/bits/stl_vector.h:939:7: note: candidate: void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = edge; _Alloc = std::allocator<edge>; std::vector<_Tp, _Alloc>::value_type = edge]
       push_back(const value_type& __x)
       ^~~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:939:7: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'const value_type& {aka const edge&}'
/usr/include/c++/7/bits/stl_vector.h:953:7: note: candidate: void std::vector<_Tp, _Alloc>::push_back(std::vector<_Tp, _Alloc>::value_type&&) [with _Tp = edge; _Alloc = std::allocator<edge>; std::vector<_Tp, _Alloc>::value_type = edge]
       push_back(value_type&& __x)
       ^~~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:953:7: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'std::vector<edge>::value_type&& {aka edge&&}'