SGU 169 — Numbers
bt的数学题.题解看这里:
http://www.mydrs.org/dvp/dispbbs.php?boardid=13&id=43684
2楼说的还算比较详细…我刚开始把题目里P的定义的乘法看成了加法所以一直不懂2楼说的,后来看题之后才发现自己看错了…
{
SGU 169; Numbers
- sqybi’s code
- Maths
}
//for my winsty
program sgu169_sqybi;
var
n, t: longint;
begin
readln(n);
if n = 1 then
writeln(8)
else begin
t := 1;
if (n - 1) mod 3 = 0 then t := t + 2;
if (n - 1) mod 6 = 0 then t := t + 1;
writeln(t);
end;
end.
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