Compilare: user.cpp: In function ‘void sortBand()’: user.cpp:66:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ;i < V.size() - 1; i++) ^ user.cpp: In function ‘int findBand(std::pair<double, double>)’: user.cpp:91:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sol == V.size() - 1) ^ user.cpp: In function ‘void binarySearch(std::pair<double, double>)’: user.cpp:104:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sol + s >= Band[poz].size()) ^ user.cpp:101:9: warning: unused variable ‘left’ [-Wunused-variable] int left = 0, right = Band[poz].size() - 1, mid, sol = -1; ^ user.cpp:101:19: warning: unused variable ‘right’ [-Wunused-variable] int left = 0, right = Band[poz].size() - 1, mid, sol = -1; ^ user.cpp:101:49: warning: unused variable ‘mid’ [-Wunused-variable] int left = 0, right = Band[poz].size() - 1, mid, sol = -1; ^