Level.1 탐욕법 > 체육복

def solution(n, lost, reserve):
    clothes = []
   
    for i in range(n):
        clothes.append(1);
       
    for i in lost:
        clothes[i-1] -= 1;
    for i in reserve:
        clothes[i-1] += 1;
 
    if clothes[0] == 2 and clothes[1] == 0:
        clothes[0] -= 1;
        clothes[1] += 1;
        
    if clothes[1] == 2 and clothes[0] == 0:
        clothes[1] -= 1;
        clothes[0] += 1;
            
    if clothes[n-1] == 2 and clothes[n-2] == 0:
        clothes[n-1] -= 1;
        clothes[n-2] += 1;
        
    if clothes[n-2] == 2 and clothes[n-1] == 0:
        clothes[n-2] -= 1;
        clothes[n-1] += 1;    
        
    for i in range(2,n-1):
        if clothes[i] == 2 and clothes[i+1] == 0:
            clothes[i] -= 1;
            clothes[i+1] += 1;
        if clothes[i+1] == 2 and clothes[i] == 0:
            clothes[i+1] -= 1;
            clothes[i] += 1;
            
    answer = 0;
       
    for i in clothes:
        if i == 1 or i == 2:
            answer += 1;
    return answer