Compilare: main.cpp: In function 'int test(int, int)': main.cpp:23:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (poz1 + k - 1 < v2[vq[i]].size()) ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int cb(int, int)': main.cpp:47:10: warning: 'sol' may be used uninitialized in this function [-Wmaybe-uninitialized] return sol; ^~~