Compilare: main.cpp:2:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas] #pragma GCC optimization ("O3") main.cpp:3:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas] #pragma GCC optimization ("unroll-loops") main.cpp: In function 'int main()': main.cpp:68:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i < odd.size(); i+=2) { ~~^~~~~~~~~~~~ main.cpp:5:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] #define owo(i,a, b) for(int i=(a);i<(b); ++i) ^ main.cpp:80:5: note: in expansion of macro 'owo' owo(i, 0, cycle.size()-1) { ^~~ main.cpp:50:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ratway.in", "r", stdin); ^ main.cpp:51:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ratway.out", "w", stdout); ^