Submission #1162918

#TimeUsernameProblemLanguageResultExecution timeMemory
1162918InvMODCats or Dogs (JOI18_catdog)C++20
Compilation error
0 ms0 KiB
#include<bits/stdc++.h> using namespace std; template<typename T> bool ckmn(T& a, const T& b){ if(a > b) return a = b, true; return false; } const int N = 1e5 + 5; int n, dp[2][N], a[N]; vector<int> adj[N]; // brute (cat: 0, dog: 1) int calc_dp(int x, int p){ dp[0][x] = dp[1][x] = 0; if(a[x] < 2) dp[a[x] ^ 1][x] = n; for(int v : adj[x])if(v != p){ calc_dp(v, x); dp[0][x] = dp[0][x] + min(dp[0][v], dp[1][v] + 1); dp[1][x] = dp[1][x] + min(dp[1][v], dp[0][v] + 1); ckmn(dp[0][x], n), ckmn(dp[1][x], n); } return min(dp[0][x], dp[1][x]); } void initialize(int _n, int u[], int v[]){ n = _n; for(int i = 0; i < n - 1; i++){ adj[u[i]].push_back(v[i]); adj[v[i]].push_back(u[i]); } for(int i = 0; i < n; i++) a[i] = 2; } int cat(int v){ a[v] = 0; return calc_dp(1, -1); } int dog(int v){ a[v] = 1; return calc_dp(1, -1); } int neighbor(int v){ a[v] = 2; return calc_dp(1, -1); }

Compilation message (stderr)

/usr/bin/ld: /tmp/ccE2UJqI.o: in function `main':
grader.cpp:(.text.startup+0x1dc): undefined reference to `initialize(int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status