Submission #1102061

#	Time	Username	Problem	Language	Result	Execution time	Memory
1102061		Pacybwoah	Tower (JOI24_tower)	C++17	25 / 100	157 ms	35304 KiB

Main

#include<iostream>
#include<vector>
#include<algorithm>
#include<utility>
#include<cassert>
#include<set>
using namespace std;
typedef long long ll;
ll inf = 8e18;
int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n, q;
    cin >> n >> q;
    ll d, a, b;
    cin >> d >> a >> b;
    vector<pair<ll, ll>> vec, free;
    for(int i = 0; i < n; i++){
        ll l, r;
        cin >> l >> r;
        vec.emplace_back(l, r);
        if(i == 0) free.emplace_back(0, l - 1);
        else free.emplace_back(vec[i - 1].second + 1, l - 1);
    }
    free.emplace_back(vec[n - 1].second + 1, inf);
    vector<pair<ll, int>> queries;
    vector<ll> ans(q, -1);
    for(int i = 0; i < q; i++){
        ll x;
        cin >> x;
        queries.emplace_back(x, i);
    }
    sort(queries.begin(), queries.end());
    int ptr = -1;
    set<pair<ll, ll>> s;
    for(auto &[l, r]: free){
        ll fst = r + 1;
        if(l == 0) fst = 0;
        else{
            auto iter = s.lower_bound(make_pair(l, -1));
            if(iter != s.end()){
                if((*iter).first <= r) fst = (*iter).first;
            }
            if(iter != s.begin()){
                iter = prev(iter);
                if((*iter).second >= l) fst = l;
            }
        }
        while(ptr < q - 1 && queries[ptr + 1].first < l) ptr++;
        while(ptr < q - 1 && queries[ptr + 1].first <= r){
            ptr++;
            if(fst <= queries[ptr].first) ans[queries[ptr].second] = queries[ptr].first;
        }
        if(fst <= r) s.emplace(fst + d, r + d);
    }
    for(int i = 0; i < q; i++) cout << ans[i] << "\n";
}
// g++ -std=c++17 -Wall -Wextra -Wshadow -fsanitize=undefined -fsanitize=address -o run tower.cpp

• Subtask 1: 0 / 5
• Subtask 2: 0 / 38
• Subtask 3: 25 / 25
• Subtask 4: 0 / 32