Submission #1162760

#	Time	Username	Problem	Language	Result	Execution time	Memory
1162760		vj09743	Mechanical Doll (IOI18_doll)	C++20	Compilation error	0 ms	0 KiB

doll

//
// Created by Viraj Verma on 06/03/2025.
//
#include <iostream>
#include <vector>
#include <unordered_map>
using namespace std;
int main() {
    int M;
    int N;
    cin>>M>>N;
    unordered_map<int, vector<int>> adjacency_list(M);
    vector<int> c (M+1);
    vector<int> travel_guide;
    int place = 0;
    for (int i = 0; i<N; i++) {
        int destination;
        cin>>destination;
        adjacency_list[place].push_back(destination);
        place = destination;
    }
    adjacency_list[place].push_back(0);
    int switch_namer = -1;
    for (int i = 0; i <= M; i++) {
        vector<int> adjacents = adjacency_list[i];
        if (adjacents.size() == 1) {
            c[i] = adjacents[0];
        }
        else if (adjacents.size() == 2) {
            c[i] = int(switch_namer);
            switch_namer--;
        }
        else {
            c[i] = 1;
        }
    }
    for_each(c.begin(), c.end(), [](int &i){cout<<i<<" ";});
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccr8SYzS.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc6gAOOc.o:doll.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccr8SYzS.o: in function `main':
grader.cpp:(.text.startup+0x168): undefined reference to `create_circuit(int, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status