aliens.cpp: In function 'int main()':
aliens.cpp:18:12: warning: unused variable 'i' [-Wunused-variable]
long long i, j, bef, n, sx, sy; scanf("%lld%lld%lld",&n, &sx, &sy);
^
aliens.cpp:18:15: warning: unused variable 'j' [-Wunused-variable]
long long i, j, bef, n, sx, sy; scanf("%lld%lld%lld",&n, &sx, &sy);
^
aliens.cpp:19:50: warning: unused variable 'cnt' [-Wunused-variable]
long long mx = min(n - sx + 1, n - sy + 1) / 5, cnt = 0;
^~~
aliens.cpp: In function 'bool qr(long long int, long long int)':
aliens.cpp:8:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%s", X);
~~~~~^~~~~~~~~
aliens.cpp: In function 'int main()':
aliens.cpp:18:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
long long i, j, bef, n, sx, sy; scanf("%lld%lld%lld",&n, &sx, &sy);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
aliens.cpp:31:21: warning: 'res' may be used uninitialized in this function [-Wmaybe-uninitialized]
long long m = (res + 1 - sx) / 5;
~~~~^~~