jae_coding

문제 문제 링크 코드 import sys from itertools import combinations input = sys.stdin.readline n, m = map(int, input().split()) board = list([0] * n for _ in range(n)) result = 0 for i in range(m): a, b = map(int, input().split()) board[a-1][b-1] = 1 board[b-1][a-1] = 1 for c in combinations(range(n), 3): x, y, z = c if board[x][y] != 1 and board[x][z] != 1 and board[y][z] != 1: result += 1 print(result)