Compilare: main.cpp: In function 'void solve()': main.cpp:76:12: warning: unused variable 'j' [-Wunused-variable] int i, j, x, y; ^ main.cpp: In function 'void solve2()': main.cpp:147:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < cicle.size(); i++) ~~^~~~~~~~~~~~~~ main.cpp: In function 'void solve1()': main.cpp:116:29: warning: 'jr' may be used uninitialized in this function [-Wmaybe-uninitialized] g << ir << ' ' << jr << ' ' << Min; ^~~ main.cpp:116:16: warning: 'ir' may be used uninitialized in this function [-Wmaybe-uninitialized] g << ir << ' ' << jr << ' ' << Min; ^~~