Submission #908938

#	Time	Username	Problem	Language	Result	Execution time	Memory
908938		PlayVoltz	Fountain (eJOI20_fountain)	C++17	30 / 100	1537 ms	3872 KiB

fountain

#include <iostream>
#include <map>
#include <vector>
#include <climits>
#include <stack>
#include <string>
#include <queue>
#include <algorithm>
#include <set>
#include <unordered_set>
#include <iostream>
#include <unordered_map>
#include <cmath>
#include <cctype>
#include <bitset>
#include <iomanip>
using namespace std;

#define int long long
#define pii pair<int, int>
#define mp make_pair
#define pb push_back

vector<int> val, par;

int32_t main(){
	int n, q, a, b;
	cin>>n>>q;
	stack<pii> st;
	val.resize(n+1, LLONG_MAX/2);
	par.resize(n+1, 0);
	for (int i=1; i<=n; ++i){
		cin>>a>>val[i];
		while (!st.empty()&&st.top().first<a)par[st.top().second]=i, st.pop();
		st.push(mp(a, i));
	}
	while (q--){
		cin>>a>>b;
		while (val[a]<b){
			b-=val[a];
			a=par[a];
		}
		cout<<a<<"\n";
	}
}

• Subtask 1: 30 / 30
• Subtask 2: 0 / 30
• Subtask 3: 0 / 40