제출 #391564

#제출 시각아이디문제언어결과실행 시간메모리
391564usachevd0Towns (IOI15_towns)C++14
컴파일 에러
0 ms0 KiB
#include <bits/stdc++.h> using namespace std; #define fi first #define se second #define mp make_pair #define pb push_back #define all(a) (a).begin(), (a).end() using ll = long long; using ull = unsigned long long; using pii = pair<int, int>; using pil = pair<int, ll>; using pli = pair<ll, int>; using pll = pair<ll, ll>; using ld = long double; template<typename T1, typename T2> bool chkmin(T1 &x, T2 y) { return y < x ? (x = y, true) : false; } template<typename T1, typename T2> bool chkmax(T1 &x, T2 y) { return y > x ? (x = y, true) : false; } void debug_out() { cerr << endl; } template<typename T1, typename... T2> void debug_out(T1 A, T2... B) { cerr << ' ' << A; debug_out(B...); } template<typename T> void mdebug_out(T* a, int n) { for (int i = 0; i < n; ++i) cerr << a[i] << ' '; cerr << endl; } #ifdef DEBUG #define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__) #define mdebug(a, n) cerr << #a << ": ", mdebug_out(a, n) #else #define debug(...) 1337 #define mdebug(a, n) 1337 #endif template<typename T> ostream& operator << (ostream& stream, const vector<T> &v) { for (auto x : v) stream << x << ' '; return stream; } template<typename T1, typename T2> ostream& operator << (ostream& stream, const pair<T1, T2>& p) { return stream << p.first << ' ' << p.second; } int hubDistance(int n, int __) { auto get_all_from = [&](int v) -> vector<int> { vector<int> d(n, 0); for (int u = 0; u < n; ++u) { if (u != v) { d[u] = getDistance(v, u); } } return d; }; auto d0 = get_all_from(0); int v1 = max_element(all(d0)) - d0.begin(); auto d1 = get_all_from(v1); int v2 = max_element(all(d1)) - d1.begin(); int D = d1[v2]; auto d2 = get_all_from(d2); vector<int> d = {0, D}; for (int x = 0; x < n; ++x) { if (x != v1 && x != v2) { int cx = (d1[x] + d2[x] - D) / 2; int dc = d1[x] - cx; d.push_back(dc); } } sort(all(d)); vector<int> cnt; vector<int> nd; for (int x : d) { if (nd.empty() || nd.back() < x) { nd.push_back(x); cnt.push_back(1); } else { ++cnt.back(); } } swap(d, nd); vector<int> pref_c(cnt.size() + 1, 0); for (int i = 0; i < cnt.size(); ++i) { pref_c[i + 1] = pref_c[i] + cnt[i]; } vector<int> suf_c(cnt.size() + 1, 0); for (int i = (int)cnt.size() - 1; i >= 0; --i) { suf_c[i] = suf_c[i + 1] + cnt[i]; } int R = 1e9; for (int i = 0; i < d.size(); ++i) { chkmin(R, max(d[i], D - d[i])); } bool found = false; for (int i = 0; i < d.size(); ++i) { if (max(d[i], D - d[i]) == R && min(cnt[i], min(pref_c[i], suf_c[i + 1])) <= n / 2) { found = true; break; } } if (found) { return R; } else { return -R; } } #ifdef DEBUG signed main() { #ifdef DEBUG freopen("in", "r", stdin); #endif ios::sync_with_stdio(0); cin.tie(0); return 0; } #endif

컴파일 시 표준 에러 (stderr) 메시지

towns.cpp: In lambda function:
towns.cpp:37:16: error: 'getDistance' was not declared in this scope; did you mean 'hubDistance'?
   37 |         d[u] = getDistance(v, u);
      |                ^~~~~~~~~~~
      |                hubDistance
towns.cpp: In function 'int hubDistance(int, int)':
towns.cpp:43:33: warning: conversion from '__gnu_cxx::__normal_iterator<int*, std::vector<int> >::difference_type' {aka 'long int'} to 'int' may change value [-Wconversion]
   43 |   int v1 = max_element(all(d0)) - d0.begin();
      |            ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
towns.cpp:45:33: warning: conversion from '__gnu_cxx::__normal_iterator<int*, std::vector<int> >::difference_type' {aka 'long int'} to 'int' may change value [-Wconversion]
   45 |   int v2 = max_element(all(d1)) - d1.begin();
      |            ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
towns.cpp:47:26: error: use of 'd2' before deduction of 'auto'
   47 |   auto d2 = get_all_from(d2);
      |                          ^~
towns.cpp:69:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |   for (int i = 0; i < cnt.size(); ++i) {
      |                   ~~^~~~~~~~~~~~
towns.cpp:77:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |   for (int i = 0; i < d.size(); ++i) {
      |                   ~~^~~~~~~~~~
towns.cpp:81:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   81 |   for (int i = 0; i < d.size(); ++i) {
      |                   ~~^~~~~~~~~~
towns.cpp:32:28: warning: unused parameter '__' [-Wunused-parameter]
   32 | int hubDistance(int n, int __) {
      |                        ~~~~^~