Compilare: main.cpp: In function 'int main()': main.cpp:22:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = k-1; i < sir.size(); i++) ~~^~~~~~~~~~~~ main.cpp:41:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < sir.size(); i++) ~~^~~~~~~~~~~~ main.cpp:50:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int p = 0; p < upd[i].size(); p++) ~~^~~~~~~~~~~~~~~