View Compilation Error

0_0_18030145_10648.cpp: In function 'int topo(int, int)':
0_0_18030145_10648.cpp:44:19: error: break statement not within loop or switch
     if(dep>100000)break;
                   ^
0_0_18030145_10648.cpp: In function 'int main()':
0_0_18030145_10648.cpp:128:29: error: too few arguments to function 'int topo(int, int)'
         int res = max(topo(S) - 2, 0);
                             ^
0_0_18030145_10648.cpp:43:5: note: declared here
 int topo(int u,int dep){
     ^