L=int(input())
M=int(input())
N=int(input())

def changer(L,M,N):
    L_n=L%25
    M=M + int(L/25)
    M_n=M%4
    N=N+int(M/4)
    N_n=N%10
    return L_n+M_n+N_n
    
print(changer(N,M,L))