Compilare: main.cpp: In function 'void adauga(int)': main.cpp:22:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < h[p].size(); i++){ ~~^~~~~~~~~~~~~ main.cpp:23:30: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if(h[p][i].first == x & pt2){ main.cpp: In function 'int calc(int)': main.cpp:34:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < h[p].size(); i++){ ~~^~~~~~~~~~~~~ main.cpp:35:26: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if(h[p][i].first == x & pt2){ main.cpp:39:1: warning: control reaches end of non-void function [-Wreturn-type] } ^