Compilare: main.cpp:6:35: warning: bad option '-ftune=native' to pragma 'optimize' [-Wpragmas] 6 | #pragma GCC optimize("tune=native") | ^ main.cpp:20:13: warning: bad option '-ftune=native' to attribute 'optimize' [-Wattributes] 20 | Vec() = default; | ^~~~~~~ main.cpp:21:35: warning: bad option '-ftune=native' to attribute 'optimize' [-Wattributes] 21 | Vec(size_t n,const T& vc = T()) { | ^ main.cpp:25:29: warning: bad option '-ftune=native' to attribute 'optimize' [-Wattributes] 25 | T& operator[](size_t idx) { | ^ main.cpp:31:37: warning: bad option '-ftune=native' to attribute 'optimize' [-Wattributes] 31 | const T& operator[](size_t idx) const { | ^~~~~ main.cpp:37:19: warning: bad option '-ftune=native' to attribute 'optimize' [-Wattributes] 37 | size_t size() const { | ^~~~~ main.cpp:40:16: warning: bad option '-ftune=native' to attribute 'optimize' [-Wattributes] 40 | void clear() { | ^ main.cpp:67:11: warning: bad option '-ftune=native' to attribute 'optimize' [-Wattributes] 67 | void read() { | ^ main.cpp:71:31: warning: bad option '-ftune=native' to attribute 'optimize' [-Wattributes] 71 | void display(Vec<Vec<int>>& ma) { | ^ main.cpp: In function 'void display(Vec<Vec<int> >&)': main.cpp:72:20: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 72 | for(int ii=1;ii<ma.size();ii++) { | ~~^~~~~~~~~~ main.cpp:73:22: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 73 | for(int j=1;j<ma[ii].size();j++) { | ~^~~~~~~~~~~~~~ main.cpp: At global scope: main.cpp:81:12: warning: bad option '-ftune=native' to attribute 'optimize' [-Wattributes] 81 | void solve() { | ^ main.cpp:138:14: warning: bad option '-ftune=native' to attribute 'optimize' [-Wattributes] 138 | int32_t main() { | ^