PAT 01-1

#include <stdio.h>

int main()
{
    int i;
    int k;
    int a[];
    scanf("%d", &k);
    for(i = ; i < k; i++)
    {
        scanf("%d", &a[i]);
    }
    printf("%d", MaxSubseqSum(a, k));
    return ;
}

int MaxSubseqSum(int a[], int n)
{
    int ThisSum, MaxSum;
    int i;
    ThisSum = MaxSum = ;
    for(i = ; i < n; i++)
    {
        ThisSum += a[i];
        if(ThisSum > MaxSum)
            MaxSum = ThisSum;
        else if(ThisSum < )
            ThisSum = ;
    }
    return MaxSum;
}