Compilare: main.cpp: In function 'int c2()': main.cpp:178:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < traseu1.size(); i++) ~~^~~~~~~~~~~~~~~~ main.cpp:183:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < traseu2.size(); i++) ~~^~~~~~~~~~~~~~~~ main.cpp:191:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < traseu2.size(); i++) ~~^~~~~~~~~~~~~~~~ main.cpp:196:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < traseu1.size(); i++) ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int c1()': main.cpp:140:9: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] int ans; ^~~