N,K=map(int,raw_input().split())
table= [[0 for i in range(1003)]for j in range(1003)]
mons=[]
for i in range(N):
    X,Y,H=map(int,raw_input().split())
    X+=500
    Y+=500
    mons.append((X,Y,H))
for i in range(K):
    X,Y,W,H,D=map(int,raw_input().split())
    X+=500
    Y+=500
    table[X][Y]+=D
    table[min(X+W+1,1002)][Y]-=D
    table[X][min(Y+H+1,1002)]-=D
    table[min(X+W+1,1002)][min(Y+H+1,1002)]+=D
for i in range(1,1003):
    table[i][0] += table[i-1][0]
    table[0][i] += table[0][i-1]
for i in range(1,1003):
    for j in range(1,1003):
        table[i][j] += table[i][j-1]+table[i-1][j]-table[i-1][j-1]
ans =0
for X,Y,H in mons:
    ans += max(0,H-table[X][Y])
print ans