Submission #933324

#	Time	Username	Problem	Language	Result	Execution time	Memory
933324		browntoad	Inspections (NOI23_inspections)	C++14	100 / 100	251 ms	25136 KiB

Main

#include <bits/stdc++.h>
#pragma GCC optimize("O3")
using namespace std;
#define ll long long
#define int ll
#define FOR(i, a, b) for (int i = (a); i < (b); i++)
#define REP(i, n) FOR(i, 0, n)
#define REP1(i, n) FOR(i, 1, n+1)
#define pii pair<int, int>
#define ppi pair<pii, int>
#define ALL(x) (x).begin(), (x).end()
#define SZ(x) (int)((x).size())
#define f first
#define s second
#define pb push_back
#define IOS() ios::sync_with_stdio(false), cin.tie(0), cout.tie(0)
#define endl '\n'
 
const ll maxn = 1e6+5;
const ll inf = 1ll<<60;
const ll mod = 1e9+7;
 
int n, m, q;
vector<pii> tag; // lazy tag to modify suffix
 
multiset<ppi> st;
 
multiset<ppi> ::iterator rep(multiset<ppi> ::iterator it, int L, int R, int v){
    ppi cur = (*it);
    int l = cur.f.f;
    int r = cur.f.s;
    //cout<<l<<' '<<r<<' '<<L<<' '<<R<<' '<<cur.s<<' '<<v<<endl;
    if (r < L || l > R) return next(it);
    if (l < L && r > R){
        tag.pb({v-(cur.s+L-l)-1, R-L+1});
        st.insert({{l, L-1}, cur.s});
        st.insert({{R+1, r}, cur.s+R+1-l});
        return st.erase(it);
    }
    if (l < L){
        //cout<<"toad"<<endl;
        tag.pb({v-(cur.s+L-l)-1, r-L+1});
        st.insert({{l, L-1}, cur.s});
        return st.erase(it);
    }
    if (r > R){
        tag.pb({v-(cur.s-(l-L))-1, R-l+1});
        st.insert({{R+1, r}, cur.s+R+1-l});
        return st.erase(it);
    }
 
    tag.pb({v-(cur.s-(l-L))-1, r-l+1});
    return st.erase(it);
}
signed main(){
    IOS();
    cin>>n>>m>>q;
    int cval = 0;
    REP(i, m){
        int L, R; cin>>L>>R;
        if (SZ(st) > 0){
            auto tt = st.lower_bound({{L+1, 0}, 0});
            if (tt != st.begin()){
                tt = prev(tt);
            }
            while(tt != st.end() && (*tt).f.f <= R){
                tt = rep(tt, L, R, cval);
            }
        }
        st.insert({{L, R}, cval});
 
        cval += R-L+1;
    }
    sort(ALL(tag), greater<pii> ());
 
    vector<pii> quer(q);
    REP(i, q){
        cin>>quer[i].f;
        quer[i].s = i;
    }
    vector<int> ans(q);
    sort(ALL(quer), greater<pii> ());
    int ptr = 0, woo = 0;
    REP(i, q){
        while(ptr < SZ(tag) && tag[ptr].f >= quer[i].f){
            woo += tag[ptr].s;
            ptr++;
        }
 
        ans[quer[i].s] = woo;
    }
    REP(i, q) cout<<ans[i]<<' ';
    cout<<endl;
 
}
/*
5 3 7
1 3
3 5
2 3
 
bruh 4 minutes debug
*/

• Subtask 1: 11 / 11
• Subtask 2: 18 / 18
• Subtask 3: 22 / 22
• Subtask 4: 26 / 26
• Subtask 5: 23 / 23