Compilare: user.cpp: In function ‘int main()’: user.cpp:13:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d", &n, &k); ^ user.cpp:24:82: warning: iteration 26u invokes undefined behavior [-Waggressive-loop-optimizations] d[i][j][c][0 + SIGMA] -= d[i - 1][j - 1][c][r + SIGMA]; ^ user.cpp:23:51: note: containing loop for(int r = -SIGMA + 1; r <= SIGMA - 1; r++) ^