Cod sursa(job #571521)

Utilizator maritimCristian Lambru maritim Data 4 aprilie 2011 16:04:18
Problema Buline Scor 20
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.84 kb
#include<stdio.h>

int A[200001];
int N;
int MAX;
int P;
int L;

void citire(void)
{
	int a;
	int b;
	FILE *f = fopen("buline.in","r");
	
	fscanf(f,"%d ",&N);
	for(int i=1;i<=N;i++)
	{
		fscanf(f,"%d %d",&a,&b);
		if(b)
			A[i] = a;
		else
			A[i] = -a;
	}
	
	fclose(f);
}

void calc(void)
{
	int s = -11111;
	int pi = 1;
	for(int i=1;i<=N;i++)
	{
		if(s>0)
			s += A[i];
		else
		{
			s = A[i];
			pi = i;
		}
		if(s>MAX)
		{
			MAX = s;
			P = pi;
			L = i-pi+1;
		}
	}
	int s1 = 0;
	int l = L;
	if(s)
	{
		for(int i=1;i<=N && s>=0<=N && i+l<N;i++)
		{
			if(s>=0)
				s += A[i];
			if(s>MAX)
			{
				MAX = s;
				P = pi;
				L = N-pi+1 + i;
			}
		}
	}
}

int main()
{
	FILE *f = fopen("buline.out","w");
	
	citire();
	calc();
	fprintf(f,"%d %d %d",MAX,P,L);
	
	fclose(f);
	return 0;
}