Submission #1293203

#	Time	Username	Problem	Language	Result	Execution time	Memory
1293203		tschav_	World Map (IOI25_worldmap)	C++20	Compilation error	0 ms	0 KiB

worldmap

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

vector<vector<int>> adj;

vector<vector<int>> create_map(int n, 
    int m, vector<int> A, vector<int> B) {

    adj.resize(n+1);

    for(int i = 0; i < n; ++i) {
        adj[a[i]].emplace_back(b[i]);
        adj[b[i]].emplace_back(a[i]);
    }

    vector<vector<int>> ans(2*n);

    for(int i = 0; i < 2 * n; ++i) {
        if(i & 1) {
            int u = (i+1)/2;
            queue<int> Q;
            for(auto &v : adj[u]) Q.push(v);
            for(int j = 0; j < 2 * n; ++j) {
                if(j & 1) {
                    if(Q.empty()) {
                        ans[i][j] = u;
                        continue;
                    }
                    ans[i][j] = Q.front();
                    Q.pop();
                } else {
                    ans[i][j] = u;
                }
            }
        } else {
            for(int j = 0; j < 2 * n; ++j) {
                ans[i][j] = 1;
            }
        }
    }

    return ans;
}

Compilation message (stderr)

worldmap.cpp: In function 'std::vector<std::vector<int> > create_map(int, int, std::vector<int>, std::vector<int>)':
worldmap.cpp:13:13: error: 'a' was not declared in this scope
   13 |         adj[a[i]].emplace_back(b[i]);
      |             ^
worldmap.cpp:13:32: error: 'b' was not declared in this scope
   13 |         adj[a[i]].emplace_back(b[i]);
      |                                ^