Submission #631870

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
631870	2022-08-19 03:43:15	jhnah917	Interval Collection (CCO20_day2problem2)	C++14	4 / 25	541 ms	48332 KiB

Main

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#include <bits/stdc++.h>
using namespace std;
int main(){
    ios_base::sync_with_stdio(false); cin.tie(nullptr);
    int N; cin >> N;
    set<pair<int,int>> S;
    multiset<int> R;
    for(int i=1; i<=N; i++){
        char op; int s, e; cin >> op >> s >> e;
        if(op == 'A'){
            auto it = S.emplace(s, e).first;
            if(it != S.begin() && next(it) != S.end()){
                R.erase(R.find(next(it)->second - prev(it)->first));
            }
            if(it != S.begin()) R.insert(e - prev(it)->first);
            if(next(it) != S.end()) R.insert(next(it)->second - s);
        }
        else{
            auto it = S.erase(S.find(make_pair(s, e)));
            if(it != S.end()) R.erase(R.find(it->second - s));
            if(it != S.begin()) R.erase(R.find(e - prev(it)->first));
            if(it != S.begin() && it != S.end()) R.insert(it->second - prev(it)->first);
        }
        if(R.empty()) cout << S.begin()->second - S.begin()->first << "\n";
        else cout << *R.begin() << "\n";
    }
}
 
 
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• Subtask 1: 0 / 3
• Subtask 2: 0 / 8
• Subtask 3: 0 / 7
• Subtask 4: 4 / 4
• Subtask 5: 0 / 3