Compilare: main.cpp: In function 'int testcase(int)': main.cpp:80:13: warning: unused variable 'it' [-Wunused-variable] 80 | for(auto &it : iv) { | ^~ main.cpp:78:7: warning: unused variable 'l' [-Wunused-variable] 78 | int l = 0, r = -1; | ^ main.cpp:78:14: warning: unused variable 'r' [-Wunused-variable] 78 | int l = 0, r = -1; | ^ main.cpp:79:7: warning: unused variable 'nr' [-Wunused-variable] 79 | int nr = 0; | ^~