Compilare: main.cpp: In function 'long long int get_nr(long long int)': main.cpp:45:33: warning: unused variable 'lss' [-Wunused-variable] long long css, cds, csj, cdj, lss, lsj, lds, ldj; ^~~ main.cpp:45:38: warning: unused variable 'lsj' [-Wunused-variable] long long css, cds, csj, cdj, lss, lsj, lds, ldj; ^~~ main.cpp:45:43: warning: unused variable 'lds' [-Wunused-variable] long long css, cds, csj, cdj, lss, lsj, lds, ldj; ^~~ main.cpp:45:48: warning: unused variable 'ldj' [-Wunused-variable] long long css, cds, csj, cdj, lss, lsj, lds, ldj; ^~~ main.cpp: In function 'int main()': main.cpp:98:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rufe.in", "r", stdin); ^ main.cpp:99:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rufe.out", "w", stdout); ^ main.cpp:101:52: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %lld %lld %lld", &n, &m, &a, &b, &k); ^ main.cpp: In function 'long long int cb(long long int, long long int)': main.cpp:94:10: warning: 'last' may be used uninitialized in this function [-Wmaybe-uninitialized] return last; ^~~~