POJ 3096 -- Surprising Strings

 POJ 3096 -- Surprising Strings

#include<iostream>
#include<map>
#include<cstring>
#include<string> 
using namespace std;
char str[80];
bool solve()
{
    for(int i=0;i<strlen(str)-2;i++)//D的长度 
    {
        map<string,int> flag;
        for(int j=0;j<strlen(str)-i-1;j++)
        {
            string ss = "AA";
            ss[0] = str[j];ss[1] = str[j+i+1];ss[2] = '';
            if(!flag[ss])//没有重复
            {
                flag[ss] = 1;
             } else{//重复 
                 return false; 
             }
        }
        flag.clear();
    }
    return true;
}

int main()
{
    
    while(true)
    {
        cin>>str;
        if(str[0] == '*') break;
        if(strlen(str) <= 2)
        {
            cout<<str<<" is surprising."<<endl;
        }else{
            if(!solve()) cout<<str<<" is NOT surprising."<<endl;
            else cout<<str<<" is surprising."<<endl;
        }
        
    }
    return 0;
}

Error 42 error C2784: 'bool std::operator <(const std::_Tree<_Traits> &,const std::_Tree<_Traits> &)' : could not deduce template argument for 'const std::_Tree<_Traits> &' from 'const std::string' d:program files_x86microsoft visual studio 9.0vcincludefunctional 143 Test

 

在使用STL的容器（比如map）的insert方法时若出现上述错误，并且其他地方没有语法错误的话，多半是没有导入头文件#include <string>