Submission #235443

#	Time	Username	Problem	Language	Result	Execution time	Memory
235443		VEGAnn	Usmjeri (COCI17_usmjeri)	C++14	28 / 140	371 ms	41340 KiB

usmjeri

#include <bits/stdc++.h>
#define sz(x) ((int)x.size())
#define all(x) x.begin(),x.end()
#define MP make_pair
#define ft first
#define sd second
#define PB push_back
#define pli pair<ll,int>
using namespace std;
typedef long long ll;
const int N = 300100;
const int PW = 22;
const int oo = 2e9;
const int md = int(1e9) + 7;
vector<int> ins[N], del[N];
multiset<int> mx;
int n, m, pr[N], ans = 1;
bool mrk[N];

int get(int x) { return (pr[x] == x ? x : pr[x] = get(pr[x])); }

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0);

#ifdef _LOCAL
    freopen("in.txt","r",stdin);
#endif // _LOCAL

    cin >> n >> m;

    for (int i = 1; i < n; i++){
        int x, y; cin >> x >> y;
        x--; y--;

        pr[i] = i;
    }

    for (int i = 0; i < m; i++){
        int l, r; cin >> l >> r;
        if (l > r) swap(l, r);
        l--; r--;

        ins[l + 1].PB(r);
        del[r].PB(r);
    }

    mx.clear();

    for (int i = 1; i < n; i++){
        for (int cr : ins[i])
            mx.insert(cr);

        if (sz(mx) > 0)
            pr[i] = get(*(--mx.end()));

        for (int cr : del[i])
            mx.erase(mx.find(cr));
    }

    for (int i = 1; i < n; i++){
        int cur = get(i);

        if (mrk[cur]) continue;

        mrk[cur] = 1;

        ans += ans;

        if (ans >= md)
            ans -= md;
    }

    cout << ans;

    return 0;
}

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 0 / 14
• Subtask 4: 0 / 14
• Subtask 5: 0 / 14
• Subtask 6: 0 / 14
• Subtask 7: 0 / 14
• Subtask 8: 0 / 14
• Subtask 9: 0 / 14
• Subtask 10: 0 / 14