Compilare: main.cpp: In function 'int main()': main.cpp:15:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("fibonaccibug.in","r",stdin); ^ main.cpp:16:43: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("fibonaccibug.out","w",stdout); ^ main.cpp:25:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&t); ^ main.cpp:32:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld",&n,&s); ^ main.cpp:35:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld",&x,&cost); ^ main.cpp:29:21: warning: iteration 33 invokes undefined behavior [-Waggressive-loop-optimizations] pmax[i] = -INF; ~~~~~~~~^~~~~~ main.cpp:28:27: note: within this loop for(int i = 0 ; i <= 33 ; i++) ~~^~~~~