Submission #999381

#	Time	Username	Problem	Language	Result	Execution time	Memory
999381		yoav_s	Roads (CEOI20_roads)	C++17	0 / 100	1 ms	348 KiB

roads

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef vector<ll> v;
typedef vector<v> vv;
typedef vector<vv> vvv;
typedef pair<ll,ll> p;
typedef vector<p> vp;
typedef vector<vp> vvp;
typedef vector<vvp> vvvp;
typedef pair<ll, p> tri;
typedef vector<tri> vtri;
typedef vector<vtri> vvtri;
typedef vector<vvtri> vvvtri;
typedef vector<bool> vb;
typedef vector<vb> vvb;
typedef vector<vvb> vvvb;

#define f first
#define s second
#define pb push_back
#define eb emplace_back
#define all(v) (v).begin(),(v).end()

const ll INF = 1e18;
const ll mod = 1e9 + 7;


int main()
{
    ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
    ll N;
    cin >> N;
    vector<pair<p,p>> edges(N);
    for (ll i = 0; i < N; i++) cin >> edges[i].f.f >> edges[i].f.s >> edges[i].s.f >> edges[i].s.s;
    map<ll, vp> edgesByX;
    for (ll i=  0; i <N; i++)
    {
        edgesByX[edges[i].f.f].eb(min(edges[i].f.s,edges[i].s.s),max(edges[i].f.s,edges[i].s.s));
    }
    for (auto &x : edgesByX)
    {
        sort(all(x.s));
    }
    p prevTop = p(-1, -1);
    for (auto x : edgesByX)
    {
        for (ll i = 0; i < x.s.size() - 1; i++)
        {
            cout << x.f << " " << x.s[i].s << " " << x.f << " " << x.s[i + 1].f << "\n";
        }
        if (prevTop.f != -1)
        {
            cout << prevTop.f << " " << prevTop.s << " " << x.f << " " << x.s.back().s;
        }
        prevTop = p(x.f, x.s.back().s);
    }
    return 0;
}

Compilation message (stderr)

roads.cpp: In function 'int main()':
roads.cpp:50:26: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |         for (ll i = 0; i < x.s.size() - 1; i++)
      |                        ~~^~~~~~~~~~~~~~~~

• Subtask 1: 0 / 0
• Subtask 2: 0 / 15
• Subtask 3: 0 / 15
• Subtask 4: 0 / 15
• Subtask 5: 0 / 15
• Subtask 6: 0 / 40