Compilare: user.cpp: In function ‘long long int Qnt(int)’: user.cpp:22:9: warning: unused variable ‘i’ [-Wunused-variable] int i,a,st,dr,mid,b,kth; ^ user.cpp: In function ‘void Try()’: user.cpp:65:9: warning: unused variable ‘i’ [-Wunused-variable] int i,pos,kth,f,st,dr,mid; ^ user.cpp:65:11: warning: unused variable ‘pos’ [-Wunused-variable] int i,pos,kth,f,st,dr,mid; ^~~ user.cpp:66:11: warning: unused variable ‘dr0’ [-Wunused-variable] int64 dr0,dr1; ^~~ user.cpp:66:15: warning: unused variable ‘dr1’ [-Wunused-variable] int64 dr0,dr1; ^~~ user.cpp: In function ‘int main()’: user.cpp:86:21: warning: unused variable ‘cnt’ [-Wunused-variable] int i,st,dr,mid,cnt,nr0,nrr0,lim; ^~~ user.cpp:83:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("copii3.in","r",stdin); ^ user.cpp:84:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("copii3.out","w",stdout); ^ user.cpp:89:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&N,&Q); ^ user.cpp:90:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",str); ^ user.cpp:109:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&L,&R); ^ user.cpp: In function ‘long long int Qnt(int)’: user.cpp:60:31: warning: ‘b’ may be used uninitialized in this function [-Wmaybe-uninitialized] return st1 - st0 + (b > 0 ? dr0 - dr1 : 0); ~~~~~~~^~~~~~~~~~~~~~~~ user.cpp:51:31: warning: ‘a’ may be used uninitialized in this function [-Wmaybe-uninitialized] st0 = sum_0[L-1] - sum_0[a-1]; ~^~ user.cpp: In function ‘void Try()’: user.cpp:79:27: warning: ‘f’ may be used uninitialized in this function [-Wmaybe-uninitialized] res = min(res, sum_0[f] - sum_0[R] - (sum_1[R] - sum_1[L-1])); ~~~~~~~^