UVA 10391 stl

https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=1332

#include<iostream>
#include<stdio.h>
#include<string.h>
#include<string>
#include<map>
using namespace std;
string ss;
char s[120003][60];
int main()
{
    int i,j;
    i=0;
    map<string,int>Map;
    while(1)
    {
        gets(s[i]);
        if(strcmp(s[i],"")==0)
            break;
        int len=strlen(s[i]);
        ss="";
        for(j=0;j<len;j++)
        {
            ss+=s[i][j];
        }
        Map[ss]=1;
        i++;
    }
    int l=i;
    string s1,s2;
    for(i=0;i<l;i++)
    {
        s1="";
        int fl=strlen(s[i]);
        for(j=0;j<fl;j++)
        {
            s1+=s[i][j];
            s2="";
            for(int k=j+1;k<fl;k++)
            {
                s2+=s[i][k];
            }
            if(Map[s1]==1&&Map[s2]==1)
            {
                printf("%s
",s[i]);
                break;
            }
        }
    }
}