Submission #842486

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
842486	2023-09-03 00:29:50	CodePlatina	Longest Trip (IOI23_longesttrip)	C++17	Compilation error	0 ms	0 KiB

longesttrip

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#include "longesttrip.h"
#include <iostream>
#include <algorithm>
#define pii pair<int, int>
#define ff first
#define ss second
using namespace std;
vector<int> longest_trip(int N, int d)
{
    bool chc[N]{};
    vector<pii> V;
    for(int i = 0; i < N; ++i)
    {
        for(int j = i + 1; j < N; ++j)
        {
            if(!are_connected(vector<int>{i}, vector<int>{j}))
                chc[i] = true, chc[j] = true, V.push_back({i, j});
        }
    }
    vector<int> ret;
    for(auto [x, y] : V) ret.push_back(x);
    for(int i = 0; i < N; ++i) if(!chc[i]) ret.push_back(x);
    for(auto [x, y] : V) ret.push_back(y);
    return ret;
}
 
 
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Compilation message (stderr)

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:24:58: error: 'x' was not declared in this scope
   24 |     for(int i = 0; i < N; ++i) if(!chc[i]) ret.push_back(x);
      |                                                          ^