Compilare: main.cpp: In member function 'void Solution::senat()': main.cpp:180:36: warning: NULL used in arithmetic [-Wpointer-arith] 180 | for(int j = 0; s[j] != NULL;) | ^~~~ main.cpp:166:19: warning: unused variable 'e' [-Wunused-variable] 166 | int n, m, e; | ^ main.cpp:174:13: warning: unused variable 'x' [-Wunused-variable] 174 | int x, y; | ^ main.cpp:174:16: warning: unused variable 'y' [-Wunused-variable] 174 | int x, y; | ^ main.cpp: In member function 'void Solution::paznici()': main.cpp:223:19: warning: unused variable 'n2' [-Wunused-variable] 223 | int n, m, n1, n2, sol, x, y; | ^~ main.cpp:223:23: warning: unused variable 'sol' [-Wunused-variable] 223 | int n, m, n1, n2, sol, x, y; | ^~~ main.cpp:223:28: warning: unused variable 'x' [-Wunused-variable] 223 | int n, m, n1, n2, sol, x, y; | ^ main.cpp:223:31: warning: unused variable 'y' [-Wunused-variable] 223 | int n, m, n1, n2, sol, x, y; | ^ In member function 'void Solution::paznici()', inlined from 'int main()' at main.cpp:290:14: main.cpp:247:6: warning: 'n1' may be used uninitialized [-Wmaybe-uninitialized] 247 | n=n1; | ~^~~ main.cpp: In function 'int main()': main.cpp:223:15: note: 'n1' was declared here 223 | int n, m, n1, n2, sol, x, y; | ^~