新疆大学ACM-ICPC程序设计竞赛五月月赛（同步赛）- Red Rover

链接：https://www.nowcoder.com/acm/contest/116/A
来源：牛客网

输入描述:

Input consists of a single line containing a string made up of the letters N, S, E, and W representing the route to transmit to the rover. The maximum length of the string is 100.

输出描述:

Display the minimum number of characters needed to encode the route.

示例1

输入

WNEENWEENEENE

输出

10

题意：给你一个由NSEW四个字符组成的字符串你可以选择一个子串用M表示，这是字符串的长度就变成了改变后的长度加上M的长度，题目让我们求出最小的长度（注意不能整个变成一个W）

代码：

#include<bits/stdc++.h>
using namespace std;
#define ll long long
int sum=0;
struct node{
        string str;
        int len;
};
vector<node>ve;
map<string,int>mp;
int main()
{
        int n;
        string s;
        cin>>s;
        int len=s.length();
        int minn=len;
        for(int i=0;i<len;i++){
                for(int j=i+1;j<len;j++){
                        string now=s.substr(i,j-i);
                        int be=0,cnt=0;
                        int num=0;
                        while(cnt!=-1){
                                cnt=s.find(now,be);
                                be=cnt+now.length();
                                if(cnt!=-1)num++;
                        }
                        if(minn>len-(num*now.length())+num+now.length()){
                        minn=len-(num*now.length())+num+now.length();
                }
                }
        }
        cout<<minn<<endl;
        return 0;

}