运行 ID: 140670

Main.cc: In function ‘void init()’:
Main.cc:15:10: error: ‘sy’ was not declared in this scope
     swap(sy[i],dy[j-1]);
          ^~
Main.cc:15:10: note: suggested alternative: ‘dy’
     swap(sy[i],dy[j-1]);
          ^~
          dy
Main.cc: In function ‘int main()’:
Main.cc:25:9: error: ‘j’ was not declared in this scope
   if(dx[j]>dx[i]&&dy[j]