Submission #896097

#TimeUsernameProblemLanguageResultExecution timeMemory
896097starchanRace (IOI11_race)C++17
Compilation error
0 ms0 KiB
#include "race.h" #include<bits/stdc++.h> using namespace std; #define in pair<int, int> #define f first #define s second #define pb push_back #define pob pop_back #define INF (int)1e17 #define MX (int)2e5+5 #define fast() ios_base::sync_with_stdio(false); cin.tie(NULL) int n, k; vector<in> adj[MX]; int sz[MX]; vector<int> curr; vector<bool> cut; stack<vector<in>> wow; void dfs1(int u, int p) { sz[u] = 1; for(in vw: adj[u]) { int v = vw.f; if(cut[v]) continue; if(v == p) continue; dfs1(v, u); sz[u]+=sz[v]; } return; } vector<in> comp[MX]; vector<int> centr[MX]; int centroid(int root, int u, int p) { for(in vw: adj[u]) { int v = vw.f; if(cut[v]) continue; if(v==p) continue; if(2*sz[v] > sz[root]) return centroid(root, v, u); } return u; } void dfs2(int u, int p, int lvl, int d) { curr.pb({d, lvl}); for(in vw: adj[u]) { int v = vw.f; int w = vw.s; if(cut[v]) continue; if(v==p) continue; int cost = d+w; if(cost > k) cost = k+1; dfs2(root, v, u, lvl+1, cost); } return; } int centroid_decomposition(int u) { dfs1(u, -1); int root = centroid(u, u, -1); cut[root] = 1; for(in vw: adj[root]) { int v = vw.f; if(cut[v]) continue; curr.clear(); dfs2(v, -root, 1, vw.s); wow.push(curr); int w = centroid_decomposition(v); comp[w] = wow.top(); wow.pop(); } return root; } int dfs3(int u, int p) { int ans = n+1; map<int, int> freq; freq[0] = 0; for(int v: centr[u]) { ans = min(ans, dfs3(v, u)); for(in L_edge: comp[v]) { int L = L_edge.f; int dep = L_edge.s; if(L > k) continue; if(freq.find(k-L) == freq.end()) continue; ans = min(ans, dep+freq[k-L]); } for(in L_edge: comp[v]) { int L = L_edge.f; int dep = L_edge.s; if(freq.find(L) == freq.end()) freq[L] = dep; else freq[L] = min(freq[L], dep); } } return ans; } int best_path(int N, int K, int h[][2], int L[]) { n = N; k = K; for(int i = 1; i <= n; i++) { adj[i].clear(); centr[i].clear(); } for(int i = 0; i < n-1; i++) { int u = h[i][0]; int v = h[i][1]; u++; v++; int l = L[i]; adj[u].pb({v, l}); adj[v].pb({u, l}); } cut.assign(n+1, 0); int root = centroid_decomposition(1); int ans = dfs3(root, -1); if(ans == (n+1)) ans = -1; return ans; } /* signed main() { int V, KK; cin >> V >> KK; int h[V-1][2]; int L[V-1]; for(int i = 0; i < V-1; i++) cin >> h[i][0] >> h[i][1] >> L[i]; int ok = best_path(V, KK, h, L); cout << ok << endl; return 0; } */

Compilation message (stderr)

race.cpp: In function 'void dfs2(int, int, int, int)':
race.cpp:51:18: error: no matching function for call to 'std::vector<int>::push_back(<brace-enclosed initializer list>)'
   51 |  curr.pb({d, lvl});
      |                  ^
In file included from /usr/include/c++/10/vector:67,
                 from /usr/include/c++/10/functional:62,
                 from /usr/include/c++/10/pstl/glue_algorithm_defs.h:13,
                 from /usr/include/c++/10/algorithm:74,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from race.cpp:2:
/usr/include/c++/10/bits/stl_vector.h:1187:7: note: candidate: 'void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = int; _Alloc = std::allocator<int>; std::vector<_Tp, _Alloc>::value_type = int]'
 1187 |       push_back(const value_type& __x)
      |       ^~~~~~~~~
/usr/include/c++/10/bits/stl_vector.h:1187:35: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'const value_type&' {aka 'const int&'}
 1187 |       push_back(const value_type& __x)
      |                 ~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_vector.h:1203:7: note: candidate: 'void std::vector<_Tp, _Alloc>::push_back(std::vector<_Tp, _Alloc>::value_type&&) [with _Tp = int; _Alloc = std::allocator<int>; std::vector<_Tp, _Alloc>::value_type = int]'
 1203 |       push_back(value_type&& __x)
      |       ^~~~~~~~~
/usr/include/c++/10/bits/stl_vector.h:1203:30: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'std::vector<int>::value_type&&' {aka 'int&&'}
 1203 |       push_back(value_type&& __x)
      |                 ~~~~~~~~~~~~~^~~
race.cpp:63:8: error: 'root' was not declared in this scope
   63 |   dfs2(root, v, u, lvl+1, cost);
      |        ^~~~
race.cpp: In function 'int centroid_decomposition(int)':
race.cpp:79:16: error: no matching function for call to 'std::stack<std::vector<std::pair<int, int> > >::push(std::vector<int>&)'
   79 |   wow.push(curr);
      |                ^
In file included from /usr/include/c++/10/stack:61,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:89,
                 from race.cpp:2:
/usr/include/c++/10/bits/stl_stack.h:239:7: note: candidate: 'void std::stack<_Tp, _Sequence>::push(const value_type&) [with _Tp = std::vector<std::pair<int, int> >; _Sequence = std::deque<std::vector<std::pair<int, int> >, std::allocator<std::vector<std::pair<int, int> > > >; std::stack<_Tp, _Sequence>::value_type = std::vector<std::pair<int, int> >]'
  239 |       push(const value_type& __x)
      |       ^~~~
/usr/include/c++/10/bits/stl_stack.h:239:30: note:   no known conversion for argument 1 from 'std::vector<int>' to 'const value_type&' {aka 'const std::vector<std::pair<int, int> >&'}
  239 |       push(const value_type& __x)
      |            ~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_stack.h:244:7: note: candidate: 'void std::stack<_Tp, _Sequence>::push(std::stack<_Tp, _Sequence>::value_type&&) [with _Tp = std::vector<std::pair<int, int> >; _Sequence = std::deque<std::vector<std::pair<int, int> >, std::allocator<std::vector<std::pair<int, int> > > >; std::stack<_Tp, _Sequence>::value_type = std::vector<std::pair<int, int> >]'
  244 |       push(value_type&& __x)
      |       ^~~~
/usr/include/c++/10/bits/stl_stack.h:244:25: note:   no known conversion for argument 1 from 'std::vector<int>' to 'std::stack<std::vector<std::pair<int, int> > >::value_type&&' {aka 'std::vector<std::pair<int, int> >&&'}
  244 |       push(value_type&& __x)
      |            ~~~~~~~~~~~~~^~~