Cod sursa(job #443232)

Utilizator alexandru92alexandru alexandru92 Data 16 aprilie 2010 15:29:35
Problema Subsecventa de suma maxima Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.46 kb
/* 
 * File:   main.cpp
 * Author: VirtualDemon
 *
 * Created on April 16, 2010, 3:18 PM
 */
#include <cstdlib>
#include <fstream>
#define SIZE 8219

/*
 * 
 */
using namespace std;
ifstream in;
int idx;
char file[SIZE];
inline void read( int& x )
{
    int sign=1;
    while( file[idx] < '0' || file[idx] > '9' )
    {
        if( '-' == file[idx] )
            sign=-1;
        if( ++idx == SIZE )
        {
            in.read( file, SIZE );
            idx=0;
        }
    }
    x=0;
    while( file[idx] >= '0' && file[idx] <= '9' )
    {
        x=x*10+file[idx]-'0';
        if( ++idx == SIZE )
        {
            in.read( file, SIZE );
            idx=0;
        }
    }
    x*=sign;
}
int main(int argc, char** argv)
{
    int N, i, j=1, x, maxx, S, start=1, Smax, mstart=1, mend=1;
    in.open( "ssm.in" );
    read(N);
    read(x);
    for( maxx=S=Smax=x, i=2; i <= N ; ++i )
    {
        read(x);
        if( maxx < x )
            maxx=x, j=i;
        if( S < 0 )
        {
            S=0;
            start=i;
        }
        S+=x;
        if( S > Smax )
        {
            Smax=S;
            mend=i;
            mstart=start;
        }
        else if( S == Smax && ( i-start+1 ) < ( mend-mstart+1 )  )
             {
                    mend=i;
                    mstart=start;
             }
    }
    ofstream out( "ssm.out" );
    if( Smax > maxx )
        out<<Smax<<' '<<mstart<<' '<<mend<<'\n';
    else out<<maxx<<' '<<j<<' '<<j<<'\n';
    return EXIT_SUCCESS;
}