题目描述

描述
The Easter Rabbit laid n eggs in a circle and is about to paint them.
Each egg should be painted one color out of 7: red, orange, yellow, green, blue, indigo or violet. Also, the following conditions should be satisfied:
Each of the seven colors should be used to paint at least one egg.
Any four eggs lying sequentially should be painted different colors.
Help the Easter Rabbit paint the eggs in the required manner. We know that it is always possible.
输入描述
The only line contains an integer n — the amount of eggs (7 ≤ n ≤ 100).
输出描述
Print one line consisting of n characters. The i-th character should describe the color of the i-th egg in the order they lie in the circle. The colors should be represented as follows: "R" stands for red, "O" stands for orange, "Y" stands for yellow, "G" stands for green, "B" stands for blue, "I" stands for indigo, "V" stands for violet.
If there are several answers, print any of them.
用例输入 1
8
用例输出 1
ROYGRBIV
用例输入 2
13
用例输出 2
ROYGBIVGBIVYG
提示
The way the eggs will be painted in the first sample is shown on the picture:

问题分析

本题意思是给围成一个圈的n(n>=7)个蛋涂上红、橙、黄、绿、蓝、靛或紫（ROYGBIV）7种颜色，7种颜色都要用上并且相邻四个蛋颜色不重复。先把前4个和后3个蛋按顺序各涂一种颜色，然后再中间循环前四个颜色并输出。

#include<iostream>
#include<string>
using namespace std;
int main(){int n;string s="ROYGBIV";cin>>n;for(int i=0;i<4;i++){cout<<s[i];}for(int i=0;i<n-7;i++){cout<<s[i%4];}for(int i=4;i<7;i++){cout<<s[i];}return 0;
}

本题很简单，找找规律就好了^V^。