N = int(input())
if N==1:
    b = 1
    for a in range(1, 10):
        if a==b:
            continue
        for c in range(10):
            if a==c or b==c:
                continue
            for d in range(1, 10):
                if a==d or b==d or c==d:
                    continue
                for e in range(10):
                    if a==e or b==e or c==e or d==e:
                        continue
                    for f in range(10):
                        if a==f or b==f or c==f or d==f or e==f:
                            continue
                        for h in range(10):
                            if a==h or b==h or c==h or d==h or e==h or f==h:
                                continue
                            x = a*100+b*10+c
                            y = d*100+e*10+f
                            z = b*1000+h*100+c*10+b
                            if x+y==z:
                                print(z)
                                exit()
elif N==2:
    h = 1
    for a in range(1, 10):
        if a==h:
            continue
        for b in range(10):
            if a==b or b==h:
                continue
            for c in range(10):
                if a==c or b==c or c==h:
                    continue
                for d in range(1, 10):
                    if a==d or b==d or c==d or d==h:
                        continue
                    for e in range(10):
                        if a==e or b==e or c==e or d==e or e==h:
                            continue
                        for f in range(10):
                            if a==f or b==f or c==f or d==f or e==f or f==h:
                                continue
                            for g in range(10):
                                if a==g or b==g or c==g or d==g or e==g or f==g or g==h:
                                    continue
                                for i in range(10):
                                    if i in [a, b, c, d, e, f, g, h]:
                                        continue
                                    for j in range(10):
                                        if j in [a, b, c, d, e, f, g, h, i]:
                                            continue
                                        x = a*1000+a*100+b*10+c
                                        y = d*1000+e*100+f*10+g
                                        z = h*10000+i*1000+b*100+c*10+j
                                        if x+y==z:
                                            print(z)
                                            exit()

else:
    for s in range(1, 10):
        for p in range(10):
            if p in [s]:
                continue
            for r in range(10):
                if r in [s, p]:
                    continue
                for i in range(10):
                    if i in [s, p, r]:
                        continue
                    for n in range(10):
                        if n in [s, p, r, i]:
                            continue
                        for g in range(10):
                            if g in [s, p, r, i, n]:
                                continue
                            for e in range(1, 10):
                                if e in [s, p, r, i, n, g]:
                                    continue
                                for h in range(10):
                                    if h in [s, p, r, i, n, g, e]:
                                        continue
                                    for t in range(10):
                                        if t in [s, p, r, i, n, g, e, h]:
                                            continue
                                        for c in range(10):
                                            if c in [s, p, r, i, n, g, e, h, t]:
                                                continue
                                            x = s*100000+p*10000+r*1000+i*100+n*10+g
                                            y = e*10000+i*1000+g*100+h*10+t
                                            z = p*100000+i*10000+c*1000+n*100+i*10+c
                                            if x+y==z:
                                                print(z)
                                                exit()