Compilare: user.cpp: In function ‘void Update(int, int, int)’: user.cpp:30:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(a <= m) Update(fiu1, st, m); ^ user.cpp: In function ‘void Find(int, int, int)’: user.cpp:53:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(jos <= st && dr <= sus) ^ user.cpp:53:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(jos <= st && dr <= sus) ^ user.cpp:66:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(jos <= m) Find(fiu1, st, m); ^ user.cpp:67:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sus > m) Find(fiu2, m+1, dr); ^ user.cpp: In function ‘void Get_Sum(int, int, int)’: user.cpp:72:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(jos <= st && dr <= sus) ^ user.cpp:72:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(jos <= st && dr <= sus) ^ user.cpp:79:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(jos <= m) Get_Sum(fiu1, st, m); ^ user.cpp:80:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sus > m) Get_Sum(fiu2, m+1, dr); ^ user.cpp: In function ‘int main()’: user.cpp:86:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=N; i++) ^ user.cpp:93:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=M; i++) ^