Compilare: main.cpp: In function 'void task1()': main.cpp:29:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(mx < v[i].size()){ ~~~^~~~~~~~~~~~~ main.cpp:32:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] } else if(mx == v[i].size()) ~~~^~~~~~~~~~~~~~ main.cpp: In function 'bool iinj(int, int)': main.cpp:41:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(si < v[i].size() && sj < v[j].size()) ~~~^~~~~~~~~~~~~ main.cpp:41:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(si < v[i].size() && sj < v[j].size()) ~~~^~~~~~~~~~~~~ main.cpp:48:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] return (si == v[i].size()); ~~~^~~~~~~~~~~~~~