Submission #734081

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
734081	2023-05-01 16:14:40	lorenzoferrari	Teleporters (IOI08_teleporters)	C++17	100 / 100	717 ms	38772 KiB

teleporters

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#pragma GCC target("avx2")
#include <bits/stdc++.h>
using namespace std;
static constexpr int N = 2e6 + 42;
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int n; cin >> n;
    int m; cin >> m;
    vector<array<int, 2>> adj;
    for (int i = 0, a, b; i < n; ++i) {
        cin >> a >> b;
        adj.push_back({a, b});
        adj.push_back({b, a});
    }
    sort(begin(adj), end(adj));
    int last = adj.back()[0];
    auto find_next = [&](int i) -> int {
        auto it = upper_bound(begin(adj), end(adj), array<int,2>{i, N});
        return (*it)[1];
    };
    int ans = 0;
    bitset<N> vis;
    for (int cur = 0; cur != last;) {
        vis[cur] = true;
        cur = find_next(cur);
        ++ans;
 
 
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• Subtask 20: 5 / 5