View Compilation Error

0_0_27084541_10905.cpp: In function 'void ins()':
0_0_27084541_10905.cpp:10:18: error: request for member 'size' in 's', which is of non-class type 'char [51]'
  for(int i=0;i<s.size();++i){
                  ^
0_0_27084541_10905.cpp: In function 'void acmach()':
0_0_27084541_10905.cpp:18:8: error: 'q' was not declared in this scope
  int u;q.push(1);
        ^
0_0_27084541_10905.cpp: In function 'void solve()':
0_0_27084541_10905.cpp:32:18: error: request for member 'size' in 'm', which is of non-class type 'char [1000010]'
  for(int i=0;i<m.size();++i){
                  ^