# void decrypt(char *s1)
# {
#     int len = strlen(s1);
#     for (int i = 0; i < len; i++)
#     {   
#         s1[i] = ((s1[i] + 2) ^ (i + 0xA));
#     }
# }

enc_flag = [0x67, 0x68, 0x7d, 0x77, 0x5f, 0x7b, 0x61, 0x50, 0x44, 0x53, 0x6d, 0x6b, 0x24, 0x63, 0x68, 0x26, 0x72, 0x2b, 0x41, 0x68, 0x2d, 0x26, 0x46, 0x7c, 0x14, 0x7a, 0x11, 0x50, 0x15, 0x10, 0x1d, 0x52, 0x1e]

for i, c in enumerate(enc_flag):
    print(chr( (c + 2) ^ (i + 0xA)), end='')
