Submission #747946

#	Time	Username	Problem	Language	Result	Execution time	Memory
747946		saayan007	City Mapping (NOI18_citymapping)	C++17	Compilation error	0 ms	0 KiB

citymapping

#include "bits/stdc++.h"
#include "citymapping.h"
using namespace std;
using ll = long long;
#define eb emplace_back
#define nl endl
#define qry qry

void find_roads(int N, int Q, int A[], int B[], int W[]) {
    deque<int> path;
    vector<int> node[N + 1];
    for(int i = 2; i <= N; ++i) {
        int d = qry(1, i);
        node[d].eb(i);
    }

    path.eb(1);
    for(int i = 1; i <= N; ++i) {
        if((int)dist[i].size() == 2) {
            int a = node[i][0], b = node[i][1];
            if(qry(a, path.back()) == 1) swap(a, b);
            path.emplace_front(a); path.eb(b);
        }
        else if((int) dist[i].size() == 2) {
            int a = node[i][0];
            if(qry(a, path.back()) == 1) path.eb(a);
            else path.emplace_front(a);
        }
    }

    for(int i = 0; i < N - 1; ++i) {
        A[i] = path[i], B[i] = path[i + 1], W[i] = 1;
    }
	return;
}

Compilation message (stderr)

citymapping.cpp: In function 'void find_roads(int, int, int*, int*, int*)':
citymapping.cpp:7:13: error: 'qry' was not declared in this scope
    7 | #define qry qry
      |             ^~~
citymapping.cpp:13:17: note: in expansion of macro 'qry'
   13 |         int d = qry(1, i);
      |                 ^~~
citymapping.cpp:19:17: error: 'dist' was not declared in this scope
   19 |         if((int)dist[i].size() == 2) {
      |                 ^~~~
citymapping.cpp:7:13: error: 'qry' was not declared in this scope
    7 | #define qry qry
      |             ^~~
citymapping.cpp:21:16: note: in expansion of macro 'qry'
   21 |             if(qry(a, path.back()) == 1) swap(a, b);
      |                ^~~
citymapping.cpp:7:13: error: 'qry' was not declared in this scope
    7 | #define qry qry
      |             ^~~
citymapping.cpp:26:16: note: in expansion of macro 'qry'
   26 |             if(qry(a, path.back()) == 1) path.eb(a);
      |                ^~~