Submission #1124423

#	Time	Username	Problem	Language	Result	Execution time	Memory
1124423		FubuGold	Plahte (COCI17_plahte)	C++20	0 / 160	180 ms	26252 KiB

plahte

#include <bits/stdc++.h>

using namespace std;

const int MAXN = 80000;

struct Query {
    int x,type,l,r,id;
    Query() {};
    Query(int _x,int _t,int _l,int _r,int _id) :
        x(_x),type(_t),l(_l),r(_r),id(_id) {}
    bool operator < (Query &qr) const {
        if (x == qr.x) return type < qr.type;
        return x < qr.x;
    }
};
vector<Query> qr;

set<pair<int,int>> st;
int col_inp[MAXN+1];
int pa[MAXN+1];
vector<int> adj[MAXN+1];
set<int> col[MAXN+1];
int ans[MAXN+1];
int n,m;

void dfs(int u) {
    int mx_v = -1;
    int mx_sz = 0;
    for (int i=0;i<adj[u].size();i++) {
        int v = adj[u][i];
        dfs(v);
        if (col[v].size() > mx_sz) {
            mx_v = v;
            mx_sz = col[v].size();
        }
    }
    if (mx_v != -1) {
        col[u].swap(col[mx_v]);
        for (int i=0;i<adj[u].size();i++) {
            int v = adj[u][i];
            for (set<int>::iterator it = col[v].begin();it != col[v].end();it++) {
                col[u].insert(*it);
            }
        }
    }
    ans[u] = col[u].size();
}

int main() {
//    freopen("LOANGMUC.inp","r",stdin);
//    freopen("LOANGMUC.out","w",stdout);
    cin.tie(0) -> sync_with_stdio(0);
    cin >> n >> m;
    for (int i=1;i<=n;i++) {
        int x1,y1,x2,y2; cin >> x1 >> y1 >> x2 >> y2;
        qr.push_back(Query(x1,1,y1,y2,i));
        qr.push_back(Query(x2+1,0,y1,y2,i));
    }
    for (int i=1;i<=m;i++) {
        int x,y; cin >> x >> y >> col_inp[i];
        qr.push_back(Query(x,2,y,y,i));
    }
    sort(qr.begin(),qr.end());
    st.insert(make_pair((int)1e9+1,0));
    for (int i=0;i<qr.size();i++) {
        int id = qr[i].id;
        if (qr[i].type == 1) {
            int l = qr[i].l, r = qr[i].r;
            set<pair<int,int>>::iterator it = st.lower_bound(make_pair(r,-1));
            adj[it->second].push_back(id);
            pa[id] = it->second;
            st.insert(make_pair(r,id));
            st.insert(make_pair(l,pa[id]));
        }
        else if (qr[i].type == 0) {
            int l = qr[i].l, r = qr[i].r;
            set<pair<int,int>>::iterator it = st.lower_bound(make_pair(r,-1));
            set<pair<int,int>>::iterator tmp = it;
            it++;
            st.erase(tmp);
            while (true) {
                if (it == st.begin()) break;
                it--;
                if (it->second != pa[id]) break;
                it = st.erase(it);
            }
        }
        else {
            int p = qr[i].l;
            set<pair<int,int>>::iterator it = st.lower_bound(make_pair(p,-1));
//            for (auto x : st) cerr << "why " << x.first << ' ' << x.second << '\n';
            col[it->second].insert(col_inp[id]);
        }
    }
    dfs(0);
    for (int i=1;i<=n;i++) cout << ans[i] << '\n';
    return 0;
}

• Subtask 1: 0 / 32
• Subtask 2: 0 / 32
• Subtask 3: 0 / 32
• Subtask 4: 0 / 32
• Subtask 5: 0 / 32