Compilare: user.cpp: In function ‘int main()’: user.cpp:164:61: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long long int’ [-Wformat=] fprintf(out, "%I64d\n", query(1, 1, N, x, y).bestSum); ^ user.cpp: In function ‘int getChar()’: user.cpp:17:33: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer, BS, 1, in); ^