Compilare: main.cpp: In function 'void update1(int, int, int)': main.cpp:27:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( ; poz<aib[nod].size(); poz+=poz&-poz) ~~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void join(int, int, int)': main.cpp:48:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<aint[left].size() && j<aint[right].size()){ ~^~~~~~~~~~~~~~~~~~ main.cpp:48:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<aint[left].size() && j<aint[right].size()){ ~^~~~~~~~~~~~~~~~~~~ main.cpp:59:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<aint[left].size()){ ~^~~~~~~~~~~~~~~~~~ main.cpp:64:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(j<aint[right].size()){ ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:152:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] { freopen("mess.in", "r", stdin); ^ main.cpp:153:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("mess.out", "w", stdout); ^ main.cpp:155:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ main.cpp:157:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i]); ^ main.cpp:164:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &tip); ^ main.cpp:166:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^ main.cpp:171:40: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &p, &q, &x); ^ main.cpp: In function 'int solve(int, int, int)': main.cpp:149:12: warning: 'last' may be used uninitialized in this function [-Wmaybe-uninitialized] return last; ^~~~