View Compilation Error

0_0_38583823_10998.cpp:5:1: error: 'vector' does not name a type; did you mean 'perror'?
 vector<int> v[100010];
 ^~~~~~
 perror
0_0_38583823_10998.cpp:6:1: error: 'vector' does not name a type; did you mean 'perror'?
 vector<pair<int,int> > beg[2];
 ^~~~~~
 perror
0_0_38583823_10998.cpp: In function 'int binary(int, int)':
0_0_38583823_10998.cpp:8:15: error: 'beg' was not declared in this scope
     int l=0,r=beg[0].size()-1;
               ^~~
0_0_38583823_10998.cpp: In function 'void solve()':
0_0_38583823_10998.cpp:31:5: error: 'beg' was not declared in this scope
     beg[0].clear();
     ^~~
0_0_38583823_10998.cpp:36:9: error: 'v' was not declared in this scope
         v[x].push_back(y);
         ^
0_0_38583823_10998.cpp:41:9: error: 'v' was not declared in this scope
         v[i].push_back(0),v[i].push_back(m+1);
         ^