View Compilation Error

0_0_20427605_14006.cpp: In function 'int sap(int, int)':
0_0_20427605_14006.cpp:17:12: error: no match for 'operator[]' (operand types are 'node' and 'int')
   if(map[u][v]>0){
            ^
0_0_20427605_14006.cpp:19:27: error: no match for 'operator[]' (operand types are 'node' and 'int')
     int x=sap(v,min(map[u][v],s2));
                           ^
0_0_20427605_14006.cpp:21:11: error: no match for 'operator[]' (operand types are 'node' and 'int')
     map[u][v]-=x;
           ^
0_0_20427605_14006.cpp:22:11: error: no match for 'operator[]' (operand types are 'node' and 'int')
     map[v][u]+=x;
           ^