Submission #1201575

#TimeUsernameProblemLanguageResultExecution timeMemory
1201575adiyerGame (APIO22_game)C++20
Compilation error
0 ms0 KiB
#include <bits/stdc++.h> using namespace std; const int MAXN = 5e5 + 11; int n, k, ok; int was[MAXN][2]; vector < int > g[MAXN][2]; void dfs(int v, bool t){ was[v][t] = 1; for(int u : g[v][t]) if(!was[u][t]) dfs(u, t); } void init(int _n, int _k) { n = _n, k = _k; for(int i = 0; i < k - 1; i++) g[i][0].push_back(i + 1), g[i + 1][1].push_back(i); dfs(0, 0); } int add_teleporter(int u, int v){ g[u][0].push_back(v); if(was[u][0]) dfs(u, 0); g[v][1].push_back(u); for(int i = 0; i < n; i++) was[i][1] = 0; dfs(u, 1); if(was[v][0] && was[v][1]) return 1; return 0; } namespace { int read_int() { int x; if (scanf("%d", &x) != 1) { fprintf(stderr, "Error while reading input\n"); exit(1); } return x; } } // namespace int main() { int N = read_int(); int M = read_int(); int K = read_int(); std::vector<int> u(M), v(M); for (int i = 0; i < M; ++i) { u[i] = read_int(); v[i] = read_int(); } init(N, K); int i; for (i = 0; i < M; ++i) { int answer = add_teleporter(u[i], v[i]); if (answer != 0 && answer != 1) { i = -1; break; } else if (answer == 1) { break; } } printf("%d\n", i); return 0; }

Compilation message (stderr)

/usr/bin/ld: /tmp/ccpdFqpV.o: in function `main':
stub.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccwDTek8.o:game.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status