Basic mod1

350 63 353 198 114 369 346 184 202 322 94 235 114 110 185 188 225 212 366 374 261 213 

Take each number mod 37 and map it to the following character set: 0-25 is the alphabet (uppercase), 26-35 are the decimal digits, and 36 is an underscore. เอาค่าไป mod 37 แล้ว map ตามนี้ ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_

abc = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_'
cipher = [350,63,353,198,114,369,346,184,202,322,94,235,114,110,185,188,225,212,366,374,261,213]
for i in cipher:
    print(abc[i % len(abc)], end='')

R0UND_N_R0UND_ADD17EC2

picoCTF{R0UND_N_R0UND_ADD17EC2}