Compilare: main.cpp:1:51: warning: bad option '-f fast-math' to pragma 'optimize' [-Wpragmas] 1 | #pragma GCC optimize("O3, fast-math, unroll-loops") | ^ main.cpp:1:51: warning: bad option '-f unroll-loops' to pragma 'optimize' [-Wpragmas] main.cpp:18:33: warning: bad option '-f fast-math' to attribute 'optimize' [-Wattributes] 18 | bool operator <(const el&ob)const | ^~~~~ main.cpp:18:33: warning: bad option '-f unroll-loops' to attribute 'optimize' [-Wattributes] main.cpp:23:30: warning: bad option '-f fast-math' to attribute 'optimize' [-Wattributes] 23 | void dijkstra(int nd, int idx) | ^ main.cpp:23:30: warning: bad option '-f unroll-loops' to attribute 'optimize' [-Wattributes] main.cpp:51:10: warning: bad option '-f fast-math' to attribute 'optimize' [-Wattributes] 51 | int main() | ^ main.cpp:51:10: warning: bad option '-f unroll-loops' to attribute 'optimize' [-Wattributes]