Practices

2182 A. New Year String

py

import sys

num_of_input = int(sys.stdin.readline())
solves = num_of_input

for _ in range(num_of_input):
  solutions = [int(i) for i in sys.stdin.readline().split()]
  if sum(solutions) < 2:
    solves -= 1
sys.stdout.write(str(solves))

CPP

#include <iostream>
#include <vector>
#include <unordered_set>
#include <unordered_map>
#include <bits/stdc++.h>
#include <ranges>
#include <algorithm>

using namespace std;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int n;
    if (!(cin >> n)) return 0;

    int total_solved = 0;

    for (int i = 0; i < n; ++i) {
        int p, v, t;
        cin >> p >> v >> t; // Read the 3 friends' opinions
        
        // If at least two friends are sure (sum is 2 or 3)
        if (p + v + t >= 2) {
            total_solved++;
        }
    }

    cout << total_solved << endl;

    return 0; // Always return 0
}

2182 B. New Year Cake

import sys

num_of_input = int(sys.stdin.readline())
 
def get_max_layer(a, b):
  curr = 1
  layers = 0

  while True:
    if layers % 2 == 0:
      if a >= curr:
        a -= curr
      else:
        break
    else:
      if b >= curr:
        b -= curr
      else:
        break
    layers += 1
    curr *= 2
    
  return layers
    
   
for _ in range(num_of_input):
  a, b = map(int, sys.stdin.readline().split())

  ans1 = get_max_layer(a, b)
  ans2 = get_max_layer(b, a)

  sys.stdout.write(str(max(ans1, ans2)) + '\n')