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DEBUG

62.Given a number N and an array of N strings, find if two consecutive words are same.
Input Size : N <= 1000
Sample Testcase :
INPUT
5
code
overload
vishal
sundar
anish
OUTPUT
no

ONE TESTCASE PASSED

const readline = require("readline");

const inp = readline.createInterface({
  input: process.stdin
});

const userInput = [];

inp.on("line", (data) => {
  userInput.push(data);
});

inp.on("close", () => {
  
var ans;
  var N = Number(userInput[0]);
  for(i=1;i<=N;i++)
  {if(userInput[i]===(userInput[i+1]))
   {ans= "yes";
   return;}
   else
   {ans="no"}}
 
  console.log(ans)

 
});








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