Submission #38704

#	Time	Username	Problem	Language	Result	Execution time	Memory
38704		khohko	Divide and conquer (IZhO14_divide)	C++14	0 / 100	1000 ms	11396 KiB

divide

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define fr first
#define sc second
#define N ((ll)(2e5+100))
#define ARRS ((ll)(2e5+100))
#define MOD ((ll)(1e9+7))

ll er[ARRS];
ll dp[ARRS];
ll dc[ARRS];
ll n;
struct va{
	ll x,g,c;
};
va a[ARRS];


int main(){
	//freopen("divide.in","r",stdin);
	//freopen("divide.out","w+",stdout);
	cin>>n;
	for(int i=0; i<n; i++){
		cin>>a[i].x>>a[i].g>>a[i].c;
	}
	ll pas=0;
	er[n]=n+1;
	for(int i=n-1; i>=0; i--){
		er[i]=i+1;
		dc[i]=a[i].c;
		dp[i]=a[i].g;
		while(er[er[i]]<n){
			//cout<<i<<" "<<a[er[er[i]]-1].x-a[i].x<<" < "<<dc[i]<<" "<<dc[er[i]]<<" "<<er[er[i]]<<endl;
			if(a[er[er[i]]-1].x-a[i].x<=dc[i]+dc[er[i]]){

				dp[i]+=dp[er[i]];
				dc[i]+=dc[er[i]];
				er[i]=er[er[i]];
			}
		}
		pas=max(pas,dp[i]);
	}
	cout<<pas;
}

• Subtask 1: 0 / 17
• Subtask 2: 0 / 31
• Subtask 3: 0 / 52