Compilare: main.cpp: In function 'int main()': main.cpp:11:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("minim.in","r",stdin); ^ main.cpp:12:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("minim.out","w",stdout); ^ main.cpp:15:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:19:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i]); ^ main.cpp:61:22: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized] for(int i=x;i<=y;i++){ ~^~~ main.cpp:24:21: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] int l=0,r=1,x,y,hmin=INT16_MAX; ^