import sys
input = sys.stdin.readline

N=int(input())
A=[list(map(int,input().split())) for i in range(N)]

A[0].append(0)
for i in range(1,N):
    A[i].append(A[i-1][2]+A[i-1][0])

DP=[-1]*(N+2)
DP[0]=0

for a,b,c in A[::-1]:
    #print(DP)
    for i in range(N,-1,-1):
        if DP[i]<0:
            continue
        DP[i+1]=max(DP[i+1],DP[i]+(-i)*a+b+c)

print(max(DP))