View Compilation Error

0_0_27653520_31265.cpp:9:1: error: stray '\243' in program
 const int MAX=100；
 ^
0_0_27653520_31265.cpp:9:1: error: stray '\273' in program
0_0_27653520_31265.cpp:10:1: error: expected ',' or ';' before 'LL'
 LL myrand()
 ^
0_0_27653520_31265.cpp: In function 'bool miller_rabin(LL)':
0_0_27653520_31265.cpp:75:24: error: 'myrand' was not declared in this scope
         LL base=myrand()%(n-1)+1;
                        ^
0_0_27653520_31265.cpp: In function 'LL pollard_rho(LL)':
0_0_27653520_31265.cpp:98:18: error: 'myrand' was not declared in this scope
         x=myrand()%n;
                  ^
0_0_27653520_31265.cpp:100:25: error: 'gcd' was not declared in this scope
         p=gcd((xx-x)%n,n)%n;
                         ^