list_input=[int(input()) for i in range(3)]

total=list_input[0]*100+list_input[1]*25+list_input[2]*1
amari1000=total%1000
t100=amari1000//100
amari100=amari1000%100
t25=amari100//25
t1=amari100%25

total_all=t100+t25+t1
print(total_all)