Submission #68513

#	Time	Username	Problem	Language	Result	Execution time	Memory
68513		ege_eksi	Divide and conquer (IZhO14_divide)	C++14	48 / 100	1081 ms	2032 KiB

divide

#include<iostream>
#include<cstdio>
#include<cstdlib>
#include<climits>

using namespace std;

int x[100000];
int g[100000];
int e[100000];

long long int prefix_g[100000];
long long int prefix_e[100000];

int main()
{
	int n;
	scanf("%d",&n);
	
	for(int i = 0 ; i < n ; i++)
	{
		scanf("%d %d %d",&x[i] , &g[i] , &e[i]);
	}
	
	prefix_g[0] = g[0];
	prefix_e[0] = e[0];
	
	for(int i = 1 ; i < n ; i++)
	{
		prefix_g[i] = prefix_g[i-1] + g[i];
		prefix_e[i] = prefix_e[i-1] + e[i];
	}
	
	long long int total_e;
	long long int total_dist;
	long long int total_gold;
	
	long long int ans = 0;
	
	for(int i = 0 ; i < n ; i++)
	{
		for(int j = i ; j < n ; j++)
		{
			if(i == 0)
			{
				total_e = prefix_e[j];
				total_gold = prefix_g[j];
			}
			else
			{
				total_e = prefix_e[j] - prefix_e[i-1];
				total_gold = prefix_g[j] - prefix_g[i-1];
			}
			
			total_dist = x[j] - x[i];
			
			if(total_e >= total_dist)
			{
				ans = max(ans , total_gold);
			}
		}
	}
	
	printf("%lli",ans);
	
	return 0;
}

Compilation message (stderr)

divide.cpp: In function 'int main()':
divide.cpp:18:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ~~~~~^~~~~~~~~
divide.cpp:22:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d %d",&x[i] , &g[i] , &e[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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