Submission #163449

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
163449	2019-11-13 10:40:46	dolphingarlic	Teleporters (IOI08_teleporters)	C++14	100 / 100	580 ms	52344 KiB

teleporters

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#include <bits/stdc++.h>
#define FOR(i, x, y) for (int i = x; i < y; i++)
typedef long long ll;
using namespace std;
int has_end[2020202], to[2020202], pref[2020202];
pair<int, int> teleporters[2020202];
int cnt = 0, sizes[2020202];
bool visited[2020202];
void dfs(int node, int cycle) {
    visited[node] = true;
    sizes[cycle]++;
    if (!visited[to[node]]) dfs(to[node], cycle);
}
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, m;
    cin >> n >> m;
    FOR(i, 0, n) {
        int a, b;
        cin >> a >> b;
        has_end[a] = has_end[b] = 1;
        teleporters[i] = {a, b};
    }
    FOR(i, 1, 2020202) pref[i] = pref[i - 1] + has_end[i];
    FOR(i, 0, n) {
 
 
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