#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
int pivotIndex(int* nums, int numsSize) {
    int i = 0, j = 0;
    int m = 0, count = 0;
    int n[100] = { 0 };
    int y = 0;
    for (i = 0; i < 100; i++)
    {
        n[i] = -1;
    }
    for (i = 0; i < numsSize; i++)
    {
        y = 0;
        m = 0;
        j = i;
            if (j == 0)//Ԫ
            {
                for (int k = 1; k < numsSize; k++)
                {
                    m = m + nums[k];
                }
                if (m == 0)
                {
                    n[i] = i;
                    count++;
                }
                else
                {
                    n[i] = -1;
                }
            }
            if (j == numsSize - 1)//ҶԪ
            {
                for (int k = 0; k < numsSize - 1; k++)
                {
                    m = m + nums[k];
                }
                if (m == 0)
                {
                    n[i] = i;
                    count++;
                }
                else
                {
                    n[i] = -1;
                }
            }
            if ((j > 0) && (j < numsSize - 1))//мԪ
            {
                int k = j;
                while (k > 0)
                {
                    k--;
                    m = m + nums[k];
                }
                k = j;
                while (k < numsSize-1)
                {
                    k++;
                    y = y + nums[k];
                }
                if (y == m)
                {
                    n[i] = i;
                    count++;
                }
                else
                {
                    n[i] = -1;
                }
            }
    }
    for (i = 0; i < 100; i++)
    {
        if (n[i] != -1)
        {
            return n[i];
        }
    }
    return -1;
}

int main()
{
    int a[] = { 1,2,3 };
    int n = 0;
    n = pivotIndex(a, 3);
    printf("%d", n);
    return 0;
}