Compilare: main.cpp: In function 'void solve()': main.cpp:19:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < bits.length(); i++) ~~^~~~~~~~~~~~~~~ main.cpp:22:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < bits.length(); i++) { ~~^~~~~~~~~~~~~~~ main.cpp:24:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = i; j < i+k && j < bits.length(); j++) { ~~^~~~~~~~~~~~~~~ main.cpp:28:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz >= bits.length()) poz = bits.length()-1; ~~~~^~~~~~~~~~~~~~~~ main.cpp:31:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int a = 0; a < update[i].size(); a++) ~~^~~~~~~~~~~~~~~~~~ main.cpp:35:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < bits.length(); i++) ~~^~~~~~~~~~~~~~~