Compilare: user.cpp: In function ‘int Query1(int, int)’: user.cpp:17:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (ii<t[i].size() && jj<t[j].size()) ^ user.cpp:17:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (ii<t[i].size() && jj<t[j].size()) ^ user.cpp: In function ‘int Query2(int, int)’: user.cpp:70:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:99:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("qvect.in","r",stdin); ^ user.cpp:100:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("qvect.out","w",stdout); ^ user.cpp:102:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&N,&M); ^ user.cpp:106:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&u); ^ user.cpp:110:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^ user.cpp:117:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&type,&i,&j); ^ user.cpp: In function ‘int GetNear(int, int, int)’: user.cpp:74:19: warning: ‘Max’ may be used uninitialized in this function [-Wmaybe-uninitialized] int k,l,r,m,f,Max; ^ user.cpp:92:27: warning: ‘f’ may be used uninitialized in this function [-Wmaybe-uninitialized] Max=max(Max,t[k][f]); ^