Compilare: main.cpp: In function 'int main()': main.cpp:59:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("plantatie.in","r",stdin); ^ main.cpp:60:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("plantatie.out","w",stdout); ^ main.cpp:63:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m);++m; ^ main.cpp:66:46: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a[i][j]),rmq[i][j][0]=a[i][j]; ^ main.cpp:69:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &nr1, &nr2, &nr3); ^ main.cpp:62:8: warning: iteration 503 invokes undefined behavior [-Waggressive-loop-optimizations] lg[i]=lg[(i>>1)]+1; ~~~~~^~~~~~~~~~~~~ main.cpp:61:15: note: within this loop for(int i=2;i<=505;++i) ~^~~~~