Compilare: main.cpp: In function 'int solve(int)': main.cpp:54:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < sol.size(); i++) ~~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:107:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < rezf.size(); i++) ~~^~~~~~~~~~~~~ main.cpp:119:22: warning: 'fiu' may be used uninitialized in this function [-Wmaybe-uninitialized] out << fiu <<" "<< rezf[i].first.second - rezf[i].first.first + 1<<'\n'; ^~~