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#include<iostream>
#include<string>
using namespace std;
int main()
{string s;getline(cin,s);int len = s.length();s[len-1] = ' ';int max=0, start=0, end=0;int temp=0;for (int i = 0; i <=len; i++){if (s[i] !=' '){temp++;}else{if (max <= temp){max = temp;end = i-1 ;start = i - temp;}temp = 0;}}for (int i = start; i <= end; i++){cout << s[i];}return 0;
}