Compilare: main.cpp: In function 'long long int smaller(long long int, long long int, long long int)': main.cpp:20:13: warning: unused variable 'small' [-Wunused-variable] 20 | int small = -1, st = 0, dr = v[i].size(); | ^~~~~ main.cpp: In function 'int main()': main.cpp:49:30: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for(int i = 0; i < v[x].size(); i++){ | ~~^~~~~~~~~~~~~ main.cpp:50:25: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | while(j < v[y].size() && v[y][j] < v[x][y]) | ~~^~~~~~~~~~~~~ main.cpp:52:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 52 | if(j < v[y].size()) dif_min = min(dif_min, abs(v[x][i] - v[y][j])); | ~~^~~~~~~~~~~~~