답안 #536135

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
536135	2022-03-12T12:36:52 Z	Alex_tz307	Parkovi (COCI22_parkovi)	C++17	컴파일 오류	0 ms	0 KB

Main

#include <bits/stdc++.h>

using namespace std;

const int kN = 2e5;
const int64_t INF = 1e18L;
vector<pair<int, int>> g[1 + kN];
int N, depth[1 + kN], sol[kN];
bitset<1 + kN> mark, covered;

void maxSelf(int64_t &x, int64_t y) {
  if (x < y) {
    x = y;
  }
}

void minSelf(int64_t &x, int64_t y) {
  if (y < x) {
    x = y;
  }
}

int64_t dfs(int u, int par, int64_t radius) {
  if ((int)g[u].size() == 1 && par) {
    return 0;
  }
  int64_t mx = -INF, mn = INF;
  for (auto it : g[u]) {
    int v, w;
    tie(v, w) = it;
    if (v != par) {
      int64_t ret = dfs(v, u, radius);
      if (ret == 0 && covered[v]) { // v este acoperit si nimic din subarborele sau nu ma mai poate ajuta mai mult decat u
        maxSelf(mx, 0LL);
        minSelf(mn, 0LL);
        continue;
      }
      if (ret < 0 && ret + w <= 0) { // u este acoperit
        covered[u] = true;
      }
      if (ret < 0 && ret + w > 0) { // v sigur e acoperit si incepand de la u nu se mai acopera nimic nou, deci "resetez"
        ret = 0;
      } else { // creste distanta fata de ultimul nod marcat si mai mult
        ret += w;
      }
      if (ret > radius) { // trebuie sa il marchez pe v acum ca sa acopere alte noduri nemarcate, pentru ca deja u nu poate ajuta
        sol[N++] = v;
        mark[v] = true;
        covered[v] = true;
        ret = min(-radius + w, 0LL); // aproape analog cu cazurile anterioare
        if (w <= radius) {
          covered[u] = true;
        }
      }
      maxSelf(mx, ret);
      minSelf(mn, ret);
    }
  }
  if (mx <= -mn) { // nodul de unde trebuie sa incep sa marchez din cauza lui mx(ca s-ar termina) va fi ori acoperit ori voi mai putea amana o eventuala marcare a sa datorita lui mn
    return mn;
  }
  return mx;
}

bool check(int64_t m, int k) {
  N = 0;
  mark.reset();
  covered.reset();
  if (dfs(1, 0, m) > 0) {
    sol[N++] = 1;
    mark[1] = true;
  } else if (!covered[1]) {
    sol[N++] = 1;
    mark[1] = true;
  }
  return N <= k;
}

void testCase() {
  int n, k;
  cin >> n >> k;
  for (int i = 1; i < n; ++i) {
    int u, v, w;
    cin >> u >> v >> w;
    g[u].emplace_back(v, w);
    g[v].emplace_back(u, w);
  }
  int64_t ans = 0, step = (1LL << 50);
  while (step) {
    if (!check(ans | step, k)) {
      ans |= step;
    }
    step /= 2;
  }
  ans += 1;
  check(ans, k);
  for (int v = 1; v <= n && N < k; ++v) {
    if (!mark[v]) {
      sol[N++] = v;
    }
  }
  cout << ans << '\n';
  for (int i = 0; i < k; ++i) {
    cout << sol[i] << ' ';
  }
  cout << '\n';
}

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  int tests = 1;
  for (int tc = 1; tc <= tests; ++tc) {
    testCase();
  }
  return 0;
}

Compilation message

Main.cpp: In function 'int64_t dfs(int, int, int64_t)':
Main.cpp:50:35: error: no matching function for call to 'min(int64_t, long long int)'
   50 |         ret = min(-radius + w, 0LL); // aproape analog cu cazurile anterioare
      |                                   ^
In file included from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from Main.cpp:1:
/usr/include/c++/10/bits/stl_algobase.h:230:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  230 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/10/bits/stl_algobase.h:230:5: note:   template argument deduction/substitution failed:
Main.cpp:50:35: note:   deduced conflicting types for parameter 'const _Tp' ('long int' and 'long long int')
   50 |         ret = min(-radius + w, 0LL); // aproape analog cu cazurile anterioare
      |                                   ^
In file included from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from Main.cpp:1:
/usr/include/c++/10/bits/stl_algobase.h:278:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  278 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/10/bits/stl_algobase.h:278:5: note:   template argument deduction/substitution failed:
Main.cpp:50:35: note:   deduced conflicting types for parameter 'const _Tp' ('long int' and 'long long int')
   50 |         ret = min(-radius + w, 0LL); // aproape analog cu cazurile anterioare
      |                                   ^
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from Main.cpp:1:
/usr/include/c++/10/bits/stl_algo.h:3468:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(std::initializer_list<_Tp>)'
 3468 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/10/bits/stl_algo.h:3468:5: note:   template argument deduction/substitution failed:
Main.cpp:50:35: note:   mismatched types 'std::initializer_list<_Tp>' and 'long int'
   50 |         ret = min(-radius + w, 0LL); // aproape analog cu cazurile anterioare
      |                                   ^
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from Main.cpp:1:
/usr/include/c++/10/bits/stl_algo.h:3474:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(std::initializer_list<_Tp>, _Compare)'
 3474 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/10/bits/stl_algo.h:3474:5: note:   template argument deduction/substitution failed:
Main.cpp:50:35: note:   mismatched types 'std::initializer_list<_Tp>' and 'long int'
   50 |         ret = min(-radius + w, 0LL); // aproape analog cu cazurile anterioare
      |                                   ^