Compilare: main.cpp: In function 'int Update(int, int, int)': main.cpp:71:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int Query(int, int, int)': main.cpp:81:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int solve1()': main.cpp:85:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < Gph[i].size(); j++){ ~~^~~~~~~~~~~~~~~ main.cpp:86:17: warning: unused variable 'x' [-Wunused-variable] int x = Gph[i][j]; ^ main.cpp:98:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'void Read(int&)': main.cpp:24:42: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(f, MAX, 1, IN), pos = 0; ^ main.cpp:29:42: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(f, MAX, 1, IN), pos = 0; ^