[프로그래머스] 정수 삼각형

 

문제

def solution(triangle):
    total = [[triangle[0][0]]] 
    
    for dy in range(1, len(triangle)):
        stair_max = []
        for dx in range(len(triangle[dy])):  
            if dx == 0:  
                max_val = total[dy - 1][0] + triangle[dy][dx]
            elif dx == len(triangle[dy]) - 1:  
                max_val = total[dy - 1][-1] + triangle[dy][dx]
            else:
                max_val = max(total[dy - 1][dx - 1], total[dy - 1][dx]) + triangle[dy][dx]
            stair_max.append(max_val)
        total.append(stair_max)  

    return max(total[-1])