Cod sursa(job #771267)

Utilizator maritimCristian Lambru maritim Data 25 iulie 2012 12:52:49
Problema Cuburi2 Scor 50
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.13 kb
#include<stdio.h>

FILE *f = fopen("cuburi2.in","r");
FILE *g = fopen("cuburi2.out","w");

#define MaxN 250100
#define INF 1LL<<58;
#define ll long long
#define formula (ll)(Best_S[i]-(i-x+1)*B_S[x]-Best_S[x-1]+Best_D[i]-(y-i+1)*B_D[y]-Best_D[y+1])

int N,M,Poz;
ll Sol;
int A[MaxN];
ll B_S[MaxN],B_D[MaxN],Best_S[MaxN],Best_D[MaxN];

void citire(void)
{
	fscanf(f,"%d %d",&N,&M);
	for(int i=1;i<=N;i++)
		fscanf(f,"%d ",&A[i]);
}

void Afisare(int A[])
{
	for(int i=1;i<=N;i++)
		printf("%d ",A[i]);
	printf("\n");
}

void Preprocesare(void)
{
	for(int i=1;i<=N;i++)
		B_S[i] = B_S[i-1]+A[i-1];
		
	for(int i=1;i<=N;i++)
		Best_S[i] = Best_S[i-1]+B_S[i];
		
	for(int i=N;i;i--)
		B_D[i] = B_D[i+1]+A[i+1];
		
	for(int i=N;i;i--)
		Best_D[i] = Best_D[i+1]+B_D[i];
}

inline ll min(ll a,ll b)
{
	return a < b ? a : b;
}

inline void Minim(int x,int y)
{
	Sol = INF;
	
	for(int i=x;i<=y;i++)
	{
		if(Sol > formula)
			Sol = formula, Poz = i;
	}
	
}

void Rezolvare(void)
{
	int a,b;
	
	Preprocesare();
	
	for(int i=1;i<=M;i++)
	{
		fscanf(f,"%d %d",&a,&b);
		Minim(a,b);
		
		fprintf(g,"%d %lld\n",Poz,Sol);
	}
}

int main()
{
	citire();
	
	Rezolvare();
}