## bzoj2190

maksyuki 发表于 oj 分类，标签:

## sgu112

maksyuki 发表于 oj 分类，标签:

ab-ba

You are given natural numbers a and b. Find ab-ba.

Input

Input contains numbers a and b (1≤a,b≤100).

## sgu105

maksyuki 发表于 oj 分类，标签:

Div 3

There is sequence 1, 12, 123, 1234, ..., 12345678910, ... . Given first N elements of that sequence. You must determine amount of numbers in it that are divisible by 3.

Input

Input contains N (1<=N<=231 - 1).

Output

Write >>继续阅读

## sgu104

maksyuki 发表于 oj 分类，标签:

Little shop of flowers

PROBLEM

You want to arrange the window of your flower shop in a most pleasant way. You have F bunches of flowers, each being of a different kind, and at least as many vases ordered in a row. The vases are glued onto >>继续阅读

## sgu102

maksyuki 发表于 oj 分类，标签:

Coprimes

For given integer N (1<=N<=104) find amount of positive numbers not greater than N that coprime with N. Let us call two positive integers (say, A and B, for example) coprime if (and only if) their greatest common divisor is 1. >>继续阅读

## sgu100

maksyuki 发表于 oj 分类，标签:

A+B

Read integers A and B from input file and write their sum in output file.

Input

Input file contains A and B (0<A,B<10001).