Sumtrian : getting 'Wrong Answer'

I tried a lot of test cases, and I haven’t been able to locate any case where the program is giving a wrong answer. Can someone locate the fault? Here’s my code:
Edit: I made a few changes and the program is now working. I took the global variables in main() and removed the additional array cache[][]. But I would like to know, why was it giving an error in the earlier code, as its the same code!
Corrected code: http://www.codechef.com/viewsolution/2029342

#include <stdio.h>
#include <stdlib.h>

int rows, z[100][100],cache[100][100];
int main()
{
    int t,k,i,j;
    scanf("%d",&t);
    while(t--)
    {
        memset(cache, -1, sizeof(cache[0][0]) * 100 * 100);
        scanf("%d",&rows);
        for(k = 1,i = 0; i < rows; i++)
        {
            for(j = 0 ; j < k;j++)
            {
                scanf("%d",&z[i][j]);
                
            }
            k++;
        }
        for(i = rows - 2;i >= 0;i--)
        {
            for(j = 0;j <= i;j++)
            {
                if(i == (rows - 2))
                cache[i][j] = z[i][j] + ((z[i+1][j] > z[i+1][j+1]) ? z[i+1][j] : z[i+1][j+1]);
                else
                cache[i][j] = z[i][j] + ((cache[i+1][j] > cache[i+1][j+1]) ? cache[i+1][j] : cache[i+1][j+1]);
            }
        }
        printf("%d\n",cache[0][0]);
    }
    return 0;
}

http://www.codechef.com/viewsolution/2040218 - i just slightly modified yours.
http://www.codechef.com/viewsolution/2029342 - your original submission.

remove k and use (1+i) instead. …that’s it! :slight_smile:

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