제출 #561798

#제출 시각아이디문제언어결과실행 시간메모리
561798timreizinMeetings (JOI19_meetings)C++17
컴파일 에러
0 ms0 KiB
#pragma GCC optimize("Ofast,unroll-loops") #pragma GCC target("avx2,bmi,bmi2,popcnt,lzcnt") #include "meetings.h" #include <random> #include <vector> #include <set> #include <numeric> #include <cassert> using namespace std; vector<vector<int>> adj; mt19937 gen(random_device()); int find(vector<int> vertices, int pivot, set<int> path) { if (vertices.size() == 1) return vertices.front(); if (vertices.size() == 2) { //do adj[vertices.front()].push_back(vertices.back()); adj[vertices.back()].push_back(vertices.front()); } else { vector<bool> used(vertices.size()); int left = vertices.size(); int pivot = uniform_int_distribution<>(0, left - 1)(gen); used[pivot] = true; --left; pivot = vertices[pivot]; while (left) { int p = uniform_int_distribution<>(1, left)(gen); for (int i = 0; i < vertices.size(); ++i) { p -= !used[i]; if (!p) { --left; used[i] = true; p = vertices[i]; break; } } vector<int> next{p}; set<int> path; for (int i = 0; i < vertices.size(); ++i) { if (!used[i]) { int r = Query(vertices[i], p, pivot); if (r != pivot) { used[i] = true; --left; next.push_back(vertices[i]); if (r == vertices[i]) path.insert(r); } } } int e = find(next, p, path); adj[pivot].push_back(e); adj[e].push_back(pivot); } } int v = pivot; while (!path.empty()) { for (int u : adj[v]) { if (path.find(u) != path.end()) { path.erase(u); v = u; } } } return v; } void Solve(int n) { adj.resize(n); set<int> path; vector<int> vertices(n); iota(vertices.begin(), vertices.end(), 0); find(vertices, 0, path); for (int i = 0; i < n; ++i) { for (int u : adj[i]) { if (i < u) Bridge(i, u); } } }

컴파일 시 표준 에러 (stderr) 메시지

meetings.cpp: In function 'int find(std::vector<int>, int, std::set<int>)':
meetings.cpp:36:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |             for (int i = 0; i < vertices.size(); ++i)
      |                             ~~^~~~~~~~~~~~~~~~~
meetings.cpp:49:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |             for (int i = 0; i < vertices.size(); ++i)
      |                             ~~^~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10/bits/random.h:35,
                 from /usr/include/c++/10/random:49,
                 from meetings.cpp:5:
/usr/include/c++/10/bits/uniform_int_dist.h: In instantiation of 'std::uniform_int_distribution<_IntType>::result_type std::uniform_int_distribution<_IntType>::operator()(_UniformRandomNumberGenerator&, const std::uniform_int_distribution<_IntType>::param_type&) [with _UniformRandomNumberGenerator = std::mersenne_twister_engine<long unsigned int, 32, 624, 397, 31, 2567483615, 11, 4294967295, 7, 2636928640, 15, 4022730752, 18, 1812433253>(std::random_device (*)()); _IntType = int; std::uniform_int_distribution<_IntType>::result_type = int]':
/usr/include/c++/10/bits/uniform_int_dist.h:189:34:   required from 'std::uniform_int_distribution<_IntType>::result_type std::uniform_int_distribution<_IntType>::operator()(_UniformRandomNumberGenerator&) [with _UniformRandomNumberGenerator = std::mersenne_twister_engine<long unsigned int, 32, 624, 397, 31, 2567483615, 11, 4294967295, 7, 2636928640, 15, 4022730752, 18, 1812433253>(std::random_device (*)()); _IntType = int; std::uniform_int_distribution<_IntType>::result_type = int]'
meetings.cpp:29:64:   required from here
/usr/include/c++/10/bits/uniform_int_dist.h:246:4: error: 'std::mersenne_twister_engine<long unsigned int, 32, 624, 397, 31, 2567483615, 11, 4294967295, 7, 2636928640, 15, 4022730752, 18, 1812433253>(std::random_device (*)())' is not a class, struct, or union type
  246 |    _Gresult_type;
      |    ^~~~~~~~~~~~~
/usr/include/c++/10/bits/uniform_int_dist.h:249:4: error: 'std::mersenne_twister_engine<long unsigned int, 32, 624, 397, 31, 2567483615, 11, 4294967295, 7, 2636928640, 15, 4022730752, 18, 1812433253>(std::random_device (*)())' is not a class, struct, or union type
  249 |    __uctype;
      |    ^~~~~~~~
/usr/include/c++/10/bits/uniform_int_dist.h:266:31: error: too few arguments to function
  266 |        __ret = __uctype(__urng()) - __urngmin;
      |                         ~~~~~~^~
/usr/include/c++/10/bits/uniform_int_dist.h:293:35: error: too few arguments to function
  293 |   __ret = __tmp + (__uctype(__urng()) - __urngmin);
      |                             ~~~~~~^~
/usr/include/c++/10/bits/uniform_int_dist.h:298:27: error: too few arguments to function
  298 |    __ret = __uctype(__urng()) - __urngmin;
      |                     ~~~~~~^~