Compilare: main.cpp: In function 'void testPermut(std::vector<int>)': main.cpp:22:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int per = 0; per < permuts.size(); per++) ~~~~^~~~~~~~~~~~~~~~ main.cpp:28:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < permuts[per].size(); j++) ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:65:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int q = 0; q < minC.size(); q++) ~~^~~~~~~~~~~~~ main.cpp:70:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int q = 0; q < fMinCost.size(); q++) ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'void findComb(std::vector<int>)': main.cpp:110:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < usedH.size(); i++) ~~^~~~~~~~~~~~~~ main.cpp:113:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < usedH[i].size(); j++) ~~^~~~~~~~~~~~~~~~~ main.cpp:122:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < used.size(); i++) ~~^~~~~~~~~~~~~ main.cpp: In function 'void findSD(int, int, std::vector<int>)': main.cpp:145:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(used.size() < n2) used.resize(n2+1); ~~~~~~~~~~~~^~~~ main.cpp:157:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(used.size() < num) used.resize(num); ~~~~~~~~~~~~^~~~~