711A - Bus to Udayland - CodeForces Solution

a = int(input())
flag = 0
arr = []
for i in range(a):
    b = str(input())

    if "OO" in b and flag != 1:
        flag = 1
        arr.append(b.replace("OO","++",1))
    
    else:
        arr.append(b)


if flag:
    print("YES")
    for j in arr:
        print(j)
else:
    print("NO")