Compilare: main.cpp: In function 'int main()': main.cpp:120:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (j-1 && sum + v[j-1] <= s){ ~~~~~~~~~~~~~^~~~ main.cpp:106:31: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff,1,10000000,fin); ^ main.cpp: In function 'long long unsigned int query(int, int, int, int, int, int)': main.cpp:97:12: warning: 'sol' may be used uninitialized in this function [-Wmaybe-uninitialized] return sol; ^~~ main.cpp: In function 'int main()': main.cpp:120:27: warning: 'sum' may be used uninitialized in this function [-Wmaybe-uninitialized] while (j-1 && sum + v[j-1] <= s){ ~~~~^~~~~~~~