View Compilation Error

0_0_14895208_32546.cpp: In function 'int main()':
0_0_14895208_32546.cpp:87:5: error: 'ios_base' has not been declared
     ios_base::sync_with_stdio(0);
     ^
0_0_14895208_32546.cpp:102:38: error: 'step' was not declared in this scope
                         int ri = i + step[k][0], rj = j + step[k][1];
                                      ^
0_0_14895208_32546.cpp:103:36: error: 'rj' was not declared in this scope
                         if(!in(ri, rj) || mp[ri][rj] != '.')
                                    ^
0_0_14895208_32546.cpp:109:38: error: 'step' was not declared in this scope
                         int ri = i + step[k][0], rj = j + step[k][1];
                                      ^
0_0_14895208_32546.cpp:110:36: error: 'rj' was not declared in this scope
                         if(!in(ri, rj)) cnt++;
                                    ^
0_0_14895208_32546.cpp:119:46: error: 'step' was not declared in this scope
                                 int ri = i + step[k][0], rj = j + step[k][1];
                                              ^
0_0_14895208_32546.cpp:120:43: error: 'rj' was not declared in this scope
                                 if(in(ri, rj) && mp[ri][rj] == 'E') {
                                           ^