 # what is the problem in my code ?

Hi I am trying to solve SUMTRIAN problem it is work good in my computer but when i put the code in the website I have the time limit problem
this is my code
if any one can help me ,plz?

• I am sorry about my English Language

package codechef;
import java.util.Scanner;
class SUMTRIAN {
private static int Trian[][];
//private static int SumTrian[];
private static int rows;
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int case1 = input.nextInt();
for (int s = 0;s<case1;s++){
rows= input.nextInt();
Trian = new int[rowsrows][rowsrows];
//SumTrian = new int[rows];
for(int row = 0;row <rows;row++)
for (int col = 0;col<=row;col++)
Trian[row][col]=input.nextInt();
System.out.println(solve(0,0));

``````  }
``````

}
public static int solve(int row,int col){
if(row>rows-1)
return 0;
else{
int t1 = solve(row+1,col);
int t2 = solve(row+1,col+1);
int t = Trian[row][col]+max(t1,t2);
return t;
}
}
public static int max(int t1,int t2){
int max = t1;
if(t2>max)
max = t2;
return max;

}
}

1 Like

Your algorithm is doing an exhaustive search and runs in exponential time, that’s why it’s getting TLE. Try doing a dynamic programming approach Good luck! Let me know if you want me to explain how to use DP approach in this problem.

1 Like

This might help-

Also, besides DP, you should take care to never name any package while submitting it on any online judge.

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#include
using namespace std;
long a;
long sum;
int temp,temp1,k;
int main()
{
int m,i,j,n,N;
temp=0;
temp1=1;
k=0;
cin>>n;
while(n>0)
{
cin>>N;
for(i=0;i<N;i++)
for(j=0;j<=i;j++)
{
cin>>a[i][j];
}
for(i=1;i<=N;i++)
{ j=0;
temp=a[i][j];
for(j=0;j<=i;j++)
{
if(temp<=a[i][j])
{
temp=a[i][j];
}
}
temp1=temp1+temp;
if(i==(N))
{
sum[k]=temp1;
if(k==0)
{ --sum[k];
}
k++;
temp1=0;
}
}
n–;
}
for(i=0;i<k;i++)
{
cout<<sum[i]<<"\n";
}
return 0;
}
What’s Wrong with my code?

I found an non-official editorial here: discuss.codechef.com/questions/4557/need-guidance-in-sums-in-triangle-problem#4561

I learned it from tutorial in the code chef by using recursion approach

I will try to solve it by DB approach

Okay brother, good luck @omar61