prog.cpp:3:28: error: ‘vector’ has not been declared
int countLatticePoints(vector<vector<int>>& cir) {
^~~~~~
prog.cpp:3:34: error: expected ‘,’ or ‘...’ before ‘<’ token
int countLatticePoints(vector<vector<int>>& cir) {
^
prog.cpp: In member function ‘int Solution::countLatticePoints(int)’:
prog.cpp:9:30: error: ‘cir’ was not declared in this scope
for(auto v : cir)
^~~