Compilare: user.cpp: In function ‘int main()’: user.cpp:12:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pocnitoare.in", "r", stdin); ^ user.cpp:13:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pocnitoare.out","w", stdout); ^ user.cpp:15:54: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d %d %d", &N, &A, &B, &X1, &Q, &Q1); ^ user.cpp:24:11: warning: iteration 31249u invokes undefined behavior [-Waggressive-loop-optimizations] P[k] = x; ^ user.cpp:20:2: note: containing loop for (int i = 0; i < M; i += SIZE, k++) { ^