# SUMTRAIN: Getting wa

admin please help with my code.I’ve also implemented recursion with memoization but it says Wrong Answer.I’ve run the code using DEV C++ compiler and it works fine on my system.

``````#include<stdio.h>
#include<stdlib.h>
#define size 4950
inline int next_int() {
int n = 0;
char c = getchar();
while (!('0' <= c && c <= '9')) {
c = getchar();
}
while ('0' <= c && c <= '9') {
n = n * 10 + c - '0';
c = getchar();
}
return n;
}

int a[size];

int elem(int i,int j)
{return (i-1)*i/2+j;
}
int summ(int i,int j,int *mem)
{int sum_left=0,sum_up=0,x;
if(j==0)
{if(i==1)
return a[elem(i,j)];
else
{sum_up=summ(i-1,j,mem)+a[elem(i,j)];
mem[elem(i,j)]=sum_up;
return sum_up;}
}
else if((x=mem[elem(i,j)])!=0)
return x;
else if(j==i-1)
{sum_left=summ(i-1,j-1,mem)+a[elem(i,j)];
mem[elem(i,j)]=sum_left;
return sum_left;}
else
{sum_left=summ(i-1,j-1,mem)+a[elem(i,j)];
sum_up=summ(i-1,j,mem)+a[elem(i,j)];
if(sum_left>=sum_up)
{mem[elem(i,j)]=sum_left;
return sum_left;}
else
{mem[elem(i,j)]=sum_up;
return sum_up;}}
}
int main()
{int t,i,n,r,c,*mem;
t=next_int();//scanf("%d",&t);//No of test cases
for(i=1;i<=t;i++)
{n=next_int();//scanf("%d",&n);//no of rows
mem=(int *)malloc(n*(n+1)*sizeof(int)/2);
for(r=1;r<=n;r++)//memoization array
{for(c=0;c<r;c++)
mem[elem(r,c)]=0;
}

for(r=1;r<=n;r++)
{for(c=0;c<r;c++)
a[elem(r,c)]=next_int();//scanf("%d",&a[elem(r,c)]);
}
int max=0,temp;
for(c=0;c<n;c++)
{temp=summ(n,c,mem);
if(temp>=max)
max=temp;
}
printf("%d",max);
free(mem);}
return 0;

}
``````

problem: SUMTRAIN

submission

Your code for example input from statement prints

``````59
``````

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