Compilare: main.cpp: In function 'void solve1(int, int)': main.cpp:35:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 35 | for (int i=0, j=0; i<v[x].size(); i++) | ~^~~~~~~~~~~~ main.cpp:37:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | while (j + 1 < v[y].size() && abs(v[x][i] - v[y][j+1]) <= abs(v[x][i] - v[y][j])) | ~~~~~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:85:27: warning: 'sol' may be used uninitialized in this function [-Wmaybe-uninitialized] 85 | out << sol << '\n'; | ^~~~