제출 #1073874

#제출 시각아이디문제언어결과실행 시간메모리
1073874RauPro어르신 집배원 (BOI14_postmen)C++14
컴파일 에러
0 ms0 KiB
import os import sys from collections import * from heapq import * from math import gcd, floor, ceil, sqrt from copy import deepcopy from itertools import permutations, combinations, product from bisect import bisect_left, bisect_right from functools import lru_cache, reduce import operator from random import getrandbits input = lambda: sys.stdin.readline().strip() flush = lambda: sys.stdout.flush() print = lambda *args, **kwargs: sys.stdout.write(' '.join(map(str, args)) + kwargs.get("end", "\n")) and flush() sys.setrecursionlimit(100000) MOD = 1000000007 MAX_NODES = 500010 def ints(): return map(int, input().split()) def strs(): return input().split() def chars(): return list(input().strip()) def mat(n): return [list(ints()) for _ in range(n)] AL = [[] for _ in range(MAX_NODES)] visited = [0] * MAX_NODES edge_visited = [0] * MAX_NODES index_tracker = [0] * MAX_NODES ans = [0] * MAX_NODES def dfs(u, size): visited[u] = 1 ans[size] = u while index_tracker[u] < len(AL[u]): v, edge_index = AL[u][index_tracker[u]] index_tracker[u] += 1 if edge_visited[edge_index]: continue edge_visited[edge_index] = 1 if not visited[v]: returned_node = dfs(v, size + 1) if returned_node == u: continue else: visited[u] = 0 return returned_node else: for j in range(size, -1, -1): print(ans[j], end=" ") if ans[j] == v: break print() visited[u] = 0 return v return 0 def solve(): n, m = ints() for i in range(m): u, v = ints() AL[u].append((v, i)) AL[v].append((u, i)) for i in range(1, n + 1): if not visited[i]: dfs(i, 0) def main(): solve() if __name__ == "__main__": main()

컴파일 시 표준 에러 (stderr) 메시지

postmen.cpp:1:1: error: 'import' does not name a type
    1 | import os
      | ^~~~~~