Compilare: user.cpp: In function ‘void MaximumSumRectagularSubmatrix()’: user.cpp:62:33: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘ll {aka long long int}’ [-Wformat=] fprintf(out, "%d", maxGlobal); ^ user.cpp: In function ‘void read()’: user.cpp:17:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &N, &M); ^ user.cpp:19:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &A[i]); ^ user.cpp:21:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &B[j]); ^