sidak
1
include
# include <stdio.h>
# include <math.h>
# include <list>
# include <algorithm>
using namespace std;
int arr[100][100], val_arr[100][100]={0};
int value (int x,int y){
if((!arr[x-1][y])&&(!arr[x-1][y-1])){
return arr[x][y];
}
else if ((!arr[x-1][y])){
return (arr[x][y]+val_arr[x-1][y-1]);
}
else if ((!arr[x-1][y-1])){
return (arr[x][y]+val_arr[x-1][y]);
}
else{
return ( val_arr[x-1][y-1]>=val_arr[x-1][y]? (arr[x][y]+val_arr[x-1][y-1]):(arr[x][y]+val_arr[x-1][y]) );
}
}
int main(){
int t;
scanf("%d",&t);
for(int i=0; i<t; i++){
int n;
scanf("%d",&n);
for(int j=0; j<n; j++){
for(int k=0; k<=j; k++){
scanf("%d",&arr[j][k]);
val_arr[j][k]=value(j,k);
}
}
int ans=-1;
for(int j=0; j<n; j++){
if(val_arr[n-1][j]>ans){
ans=val_arr[n-1][j];
}
}
printf("%d\n", ans);
}
}