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question:Write a program to analyze weather data and predict potential weather changes. The weather data consists of daily temperature, humidity, wind speed, and precipitation measurements collected over a period of time. Each day’s data is provided as a timestamp followed by the four measurements. Your task is to identify if there is a potential for significant temperature change in the next three days. A significant temperature change is defined as a temperature change greater than or equal to 5 degrees Celsius. Input The input consists of multiple datasets followed by a line containing a single zero. Each dataset represents the weather data for a particular period and is formatted as follows: m timestamp1 temperature1 humidity1 wind_speed1 precipitation1 timestamp2 temperature2 humidity2 wind_speed2 precipitation2 ... timestampm temperaturem humiditym wind_speedm precipitationm The first line is the number of days, m, which satisfies 4 ≤ m ≤ 365. Subsequent m lines contain the timestamp (a string in "YYYY-MM-DD" format), temperature (an integer), humidity (an integer in percentage), wind speed (an integer in km/h), and precipitation (an integer in mm). The temperature values should fall between -50 to 50 degrees Celsius. Output For each dataset, output "1" if there is at least one instance where the temperature changes by 5 degrees or more within any three consecutive days. Output "0" otherwise. Each number must be in a separate line without any other characters. Example Input 5 2023-01-01 10 60 15 3 2023-01-02 12 65 20 2 2023-01-03 15 70 10 0 2023-01-04 17 75 25 1 2023-01-05 12 60 30 3 4 2023-02-01 5 55 10 1 2023-02-02 4 50 15 0 2023-02-03 6 52 20 1 2023-02-04 11 45 25 2 0 Output 1 1
answer:def analyze_weather_data(datasets): results = [] for dataset in datasets: temperatures = [day[1] for day in dataset] significant_change = 0 for i in range(len(temperatures) - 2): if abs(temperatures[i+2] - temperatures[i]) >= 5: significant_change = 1 break results.append(significant_change) return results def parse_input(input_data): datasets = [] current_dataset = [] for line in input_data: if line == "0": if current_dataset: datasets.append(current_dataset) break elif line.strip().isdigit(): if current_dataset: datasets.append(current_dataset) current_dataset = [] else: parts = line.split() timestamp = parts[0] temperature = int(parts[1]) humidity = int(parts[2]) wind_speed = int(parts[3]) precipitation = int(parts[4]) current_dataset.append((timestamp, temperature, humidity, wind_speed, precipitation)) return datasets def main(input_data): datasets = parse_input(input_data) results = analyze_weather_data(datasets) for result in results: print(result) # Example usage: input_data = [ "5", "2023-01-01 10 60 15 3", "2023-01-02 12 65 20 2", "2023-01-03 15 70 10 0", "2023-01-04 17 75 25 1", "2023-01-05 12 60 30 3", "4", "2023-02-01 5 55 10 1", "2023-02-02 4 50 15 0", "2023-02-03 6 52 20 1", "2023-02-04 11 45 25 2", "0" ] main(input_data)
question:A common problem in competitive programming is finding the longest common subsequence (LCS) between two sequences. In computer science, the LCS problem is the problem of finding the longest subsequence common to two sequences. A subsequence is a sequence that appears in the same relative order but not necessarily contiguously. You are tasked with finding the length of the longest common subsequence between two given strings. Input The first line of input contains an integer T that denotes the number of test cases to follow. Each test case consists of two strings on separate lines, both composed of lowercase English letters. Output For each test case, output a single integer denoting the length of the longest common subsequence of the given two strings. Constraints 1 ≤ T ≤ 10 1 ≤ length of each string ≤ 1000 SAMPLE INPUT 2 abcde ace abc def SAMPLE OUTPUT 3 0 Explanation For the first test case, the longest common subsequence of "abcde" and "ace" is "ace" which has a length of 3. For the second test case, there is no common subsequence between "abc" and "def", so the length is 0.
answer:def lcs_length(str1, str2): Returns the length of the longest common subsequence of str1 and str2. n = len(str1) m = len(str2) # Initialize the DP table dp = [[0] * (m + 1) for _ in range(n + 1)] for i in range(1, n + 1): for j in range(1, m + 1): if str1[i - 1] == str2[j - 1]: dp[i][j] = dp[i - 1][j - 1] + 1 else: dp[i][j] = max(dp[i - 1][j], dp[i][j - 1]) return dp[n][m] def solve_lcs(test_cases): Solves multiple test cases for the LCS problem. results = [] for str1, str2 in test_cases: results.append(lcs_length(str1, str2)) return results
question:You are given a sequence of words and a pattern. Your task is to write a program that determines if the words follow the same pattern. Each word in the pattern corresponds to a unique word in the sequence and vice versa. # Input The input consists of multiple test cases. N --- Pattern Sequence0 Sequence1 ... SequenceN-1 - N is the number of sequences. - Each Pattern is a string consisting of lowercase letters. - Each Sequencei gives a sequence of words separated by spaces. # Output For each Sequencei, output "true" if the sequence of words follows the given pattern, otherwise output "false". # Constraints - 1 ≤ N ≤ 50 - 1 ≤ length of Pattern ≤ 50 - 1 ≤ number of words in Sequencei ≤ 50 - 1 ≤ length of each word ≤ 50 # Example Input ``` 3 abba dog cat cat dog dog cat cat fish aaaa dog dog dog dog ``` Output ``` true false true ``` # Explanation 1. In the first sequence "dog cat cat dog", the pattern "abba" maps to words "dog" -> "a", "cat" -> "b", "cat" -> "b", "dog" -> "a", which is correct. 2. In the second sequence "dog cat cat fish", the pattern "abba" does not match because "fish" does not map to "a". 3. In the third sequence "dog dog dog dog", the pattern "aaaa" is followed correctly by the sequence where every word "dog" corresponds to "a".
answer:def word_pattern(pattern, sequence): words = sequence.split() if len(pattern) != len(words): return "false" char_to_word = {} word_to_char = {} for p, w in zip(pattern, words): if p not in char_to_word: if w in word_to_char: return "false" char_to_word[p] = w word_to_char[w] = p else: if char_to_word[p] != w: return "false" return "true" def process_input(n, pattern, sequences): results = [] for sequence in sequences: results.append(word_pattern(pattern, sequence)) return results
question:You are given a string that represents a sequence of digits. Your task is to determine how many times the digit `7` appears in the string and print the count. Constraints - The string `s` consists of digits only (0-9). - The length of the string `s` is between 1 and 100. Input Input is given from Standard Input in the following format: `s` Output Print a single integer: the number of times the digit `7` appears in the string. Examples Input `1234567` Output `1` Input `7070707070707` Output `7`
answer:def count_sevens(digit_string): Returns the number of times the digit '7' appears in the input digit string. return digit_string.count('7') # Reading input from standard input is required as per the task if __name__ == "__main__": import sys input_string = sys.stdin.read().strip() print(count_sevens(input_string))