#define m(a,b) a>b?a:b
main()
{
int t,n,i,j,a[101][101]={};
while(t--)
{
for(i
=1;i
<=n
;i
++)for(j
=1;j
<=i
;j
++)scanf("%d",&a
[i
][j
]),a
[i
][j
]+=m
(a
[i
-1][j
-1],a
[i
-1][j
]); j=0;for(i=1;i<=n;i++) j=m(j,a[n][i]);
}
}
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