View Compilation Error

0_0_19761406_15477.cpp: In function 'int main()':
0_0_19761406_15477.cpp:23:39: error: expected ';' before '{' token
         scanf("%d %d",&a,&after[i].to){
                                       ^
0_0_19761406_15477.cpp:52:11: error: a function-definition is not allowed here before '{' token
 int read(){
           ^
0_0_19761406_15477.cpp:61:1: error: expected '}' at end of input
 }
 ^