Compilare: main.cpp:1:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas] #pragma GCC optimization "O2" main.cpp:2:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas] #pragma GCC optimization "unroll-loop" main.cpp: In function 'int main()': main.cpp:30:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for (ll i = 1;i <= 22;i++) full *= 2; full--; ^~~ main.cpp:30:43: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for (ll i = 1;i <= 22;i++) full *= 2; full--; ^~~~ main.cpp:26:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen(task".in", "r", stdin); ^ main.cpp:27:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen(task".out", "w", stdout); ^