View Compilation Error

0_0_33167463_2091.cpp:1:8: error: 'matrix' was not declared in this scope
  int m=matrix.size();
        ^
0_0_33167463_2091.cpp:2:9: error: expected unqualified-id before 'if'
         if(m==0)return 0;
         ^
0_0_33167463_2091.cpp:3:15: error: 'matrix' was not declared in this scope
         int n=matrix[0].size();
               ^
0_0_33167463_2091.cpp:4:9: error: 'vector' does not name a type
         vector<int> dp(n,0);
         ^
0_0_33167463_2091.cpp:7:9: error: 'dp' does not name a type
         dp[0]=matrix[0][0]-'0';
         ^
0_0_33167463_2091.cpp:8:9: error: expected unqualified-id before 'for'
         for(int i=0;i<m;i++){
         ^
0_0_33167463_2091.cpp:8:21: error: 'i' does not name a type
         for(int i=0;i<m;i++){
                     ^
0_0_33167463_2091.cpp:8:25: error: 'i' does not name a type
         for(int i=0;i<m;i++){
                         ^
0_0_33167463_2091.cpp:20:9: error: expected unqualified-id before 'return'
         return maxEdge*maxEdge;
         ^