根据初始条件,申明个以下所有涉及的字母都是正整数哈,设总数为5a+1个,
after the 1st person,总数变成4a,设此时总数为5b+1个
after 2nd,4b=5c+1
4c=5d+1
4d=5e+1
after 5th,4e=5f+1,最后每人分到f个椰子(不算他们私自藏起来的)
1.25+1+1+1+2=30, no less
2.1*100=100
50*(0.7+0.3)=50
3.8days
4.the first time 100
the second time 100/3=33....1
the third time 33/3=11
the fourth time (11+1)/3=4
the fifth time 4/3=1..1
total 100+33+11+4+1=149