jelly.cpp:6:39: error: 'vector' has not been declared
6 | int find_maximum_unique(int x, int y, vector<int> fir, vector<int> sec)
| ^~~~~~
jelly.cpp:6:45: error: expected ',' or '...' before '<' token
6 | int find_maximum_unique(int x, int y, vector<int> fir, vector<int> sec)
| ^
jelly.cpp: In function 'int find_maximum_unique(int, int, int)':
jelly.cpp:8:11: error: 'fir' was not declared in this scope
8 | int n=fir.size();
| ^~~
jelly.cpp:17:8: error: 'sec' was not declared in this scope
17 | if(sec[0]==0)
| ^~~