Compilare: user.cpp: In function ‘long long int f1(long long int*, long long int, long long int, long long int, long long int)’: user.cpp:11:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(p == u) ^ user.cpp: In function ‘long long int f2(long long int*, long long int, long long int, long long int, long long int)’: user.cpp:26:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(p == u) ^ user.cpp: In function ‘int main()’: user.cpp:107:35: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘long long int*’ [-Wformat=] fscanf(f, "%I64d%I64d", &n, &k); ^ user.cpp:107:35: warning: format ‘%d’ expects argument of type ‘int*’, but argument 4 has type ‘long long int*’ [-Wformat=] user.cpp:111:33: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘long long int*’ [-Wformat=] fscanf(f, "%I64d", &x[i]); ^ user.cpp:124:59: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long long int’ [-Wformat=] fprintf(f, "%I64d\n", find_kth(x, n, n * n, st, dr, k)); ^ user.cpp:107:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%I64d%I64d", &n, &k); ^ user.cpp:111:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%I64d", &x[i]); ^