CompileError!

main.c:1:1: error: unknown type name \xe2\x80\x98def\xe2\x80\x99\n    1 | def max_sum(grid, N):\n      | ^~~\nmain.c: In function \xe2\x80\x98max_sum\xe2\x80\x99:\nmain.c:1:21: error: expected declaration specifiers before \xe2\x80\x98:\xe2\x80\x99 token\n    1 | def max_sum(grid, N):\n      |                     ^\nmain.c:20:3: error: invalid preprocessing directive #\\U00008bfb\\U000053d6\\U00008f93\\U00005165\n   20 | # \xe8\xaf\xbb\xe5\x8f\x96\xe8\xbe\x93\xe5\x85\xa5\n      |   ^~~~~~~~\nmain.c:29:3: error: invalid preprocessing directive #\\U00008ba1\\U00007b97\\U00005e76\\U00008f93\\U000051fa\\U00006700\\U00005927\\U0000548c\n   29 | # \xe8\xae\xa1\xe7\xae\x97\xe5\xb9\xb6\xe8\xbe\x93\xe5\x87\xba\xe6\x9c\x80\xe5\xa4\xa7\xe5\x92\x8c\n      |   ^~~~~~~~~~~~~~~~\nmain.c:1:5: warning: type of \xe2\x80\x98grid\xe2\x80\x99 defaults to \xe2\x80\x98int\xe2\x80\x99 [-Wimplicit-int]\n    1 | def max_sum(grid, N):\n      |     ^~~~~~~\nmain.c:1:5: warning: type of \xe2\x80\x98N\xe2\x80\x99 defaults to \xe2\x80\x98int\xe2\x80\x99 [-Wimplicit-int]\nmain.c:31: warning: control reaches end of non-void function [-Wreturn-type]\n