제출 #1148372

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1148372		ghammazhassan	Bouquet (EGOI24_bouquet)	C++20	24 / 100	22 ms	14408 KiB

Main

// #include <bits/stdc++.h>
#include <iostream>
#include <cmath>
#include <algorithm>
#include <map>
#include <vector>
#include <iomanip>
#include <string>
#include <queue>
#include <set>
#include <deque>
using namespace std;
#define int long long
#define endl "\n";
const int N=2e5+5;
const int M=1e9+7;
int n , q , x , y , p[N] , cnt[N] , ind[N];
vector<vector<int>>a(N);
vector<int>pr(N);
vector<int>e;
vector<int>l(N);
vector<pair<int,int>>li(N);
void solve()
{
	cin >> n;
	vector<pair<int,int>>a(n);
	for (int i=0;i<n;i++){
		cin >> x >> y;
		a[i]={max(i-x,(int)0),min(i+y,n-1)};
	}
	int i=1;
	int j=0;
	int i1=a[0].second;
	int j1=a[0].first;
	y=0;
	int c=1;
	for (int l;i<=i1;i++){
		if (i1>a[i].second){
			i1=a[i].second;
			y=i;
		}
	}
	i=a[y].second+1;
	// cout << y << endl;
	while (i<n){
		i1=n;
		bool f=0;
		int y1=y;
		for (i=a[y1].second+1;i<i1;i++){
			if ((y1<a[i].first) and (i1>a[i].second)){
				i1=a[i].second;
				y=i;
				f=1;
			}
		}
		// cout << y << endl;
		// cout << i << " " << i1 << endl;
		if (f){
			c++;
		}
		else{
			break;
		}
		
	}
	cout << c << endl;
}
signed main()
{

    ios::sync_with_stdio(0);//DO NOT USE IN INTERACTIVE
    cin.tie(0), cout.tie(0);//DO NOT USE IN INTERACTIVE
    cout << fixed<<setprecision(9);
    int t=1;
    // cin >> t;
    for (int _=1;_<=t;_++){
    	solve();
    }
}
// Fenwick Tree
// Sqrt Decomposition
// Segment Tree

• Subtask 1: 8 / 8
• Subtask 2: 16 / 16
• Subtask 3: 0 / 28
• Subtask 4: 0 / 18
• Subtask 5: 0 / 30