Day 24 of 100 day of code

It's day 24 and today I practiced three questions on codechef

question 1

#include <bits/stdc++.h>
using namespace std;

bool solve(int n){
  int cnt =0;
  int left_days = 120-n;
  for(int i =0;i<n;i++){
    char x;
    cin>>x;
    if(x=='1'){
      cnt++;
    }
  }
  int present = left_days+cnt;
  float percent = float((present/120.0)*100);

  return (percent>=75);
}

int main(){
  int t;
  cin>>t;
  while(t--){
    int n;
    cin>>n;
    if(solve(n)){
      cout<<"YES"<<endl;
    }else{
      cout<<"NO"<<endl;
    }
  }
}

question 2

#include <bits/stdc++.h>
using namespace std;

int solve(int n){
  int odd =0;
  for(int i=0;i<n;i++){
    int x;
    cin>>x;
    if(x%2==1){
      odd++;
    }
  }
  if(odd%2==0||n==1){
    return 1;
  }
  return 2;
}

int main(){
  int t;
  cin>>t;
  while(t--){
    int n;
    cin>>n;
    int ans = solve(n);
    cout<<ans<<endl;
  }
}

question 3

#include <bits/stdc++.h>
using namespace std;

int solve(string s){
  int n = s.size();
  int cnt =0;
  for(int i =0;i<n-1;i++){
      if(s[i]=='<'&& s[i+1]=='>'){
        cnt++;
      }
  }
  return cnt;
}

int main(){
  int t;
  cin>>t;
  while(t--){
    string s;
    cin>>s;
    int ans = solve(s);
    cout<<ans<<endl;
  }
}