Submission #984876

#	Time	Username	Problem	Language	Result	Execution time	Memory
984876		54skyxenon	Crocodile's Underground City (IOI11_crocodile)	C++17	Compilation error	0 ms	0 KiB

crocodile

// https://oj.uz/problem/view/IOI11_crocodile

#include <bits/stdc++.h>
using namespace std;

extern int travel_plan(int, int, int (*) [2], int*, int, int*);

vector<map<int, int>> graph;
vector<bool> is_exit;
vector<bool> visited;

int dfs(int curr) {
    if (is_exit[curr]) {
        return 0;
    }

    vector<int> distances;
    for (auto [nei, weight] : graph[curr]) {
        if (!visited[nei]) {
            visited[nei] = true;
            distances.push_back(weight + dfs(nei));
        }
    }

    sort(distances.begin(), distances.end());
    return distances[1];
}

extern int travel_plan(int N, int M, int* R[2], int* L, int K, int* P) {
    graph.resize(N);
    is_exit.resize(N);
    visited.resize(N);

    for (int i = 0; i < M; i++) {
        graph[R[i][0]][R[i][1]] = graph[R[i][1]][R[i][0]] = L[i];
    }

    for (int i = 0; i < K; i++) {
        is_exit[P[i]] = true;
    }

    visited[0] = true;
    return dfs(0);
}

// int main() {}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccpGZpKo.o: in function `main':
grader.cpp:(.text.startup+0x36): undefined reference to `travel_plan(int, int, int (*) [2], int*, int, int*)'
collect2: error: ld returned 1 exit status