answer.code: In function ‘void dnt(int*, int)’:
answer.code:53:9: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   53 |     rep(i, 1, nown - 1) if (i < r[i]) swap(a[i], a[r[i]]);
      |         ^
answer.code:15:40: note: in definition of macro ‘rep’
   15 | #define rep(i, x, y) for (register int i = (x); i <= (y); ++i)
      |                                        ^
answer.code:59:17: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   59 |             rep(k, 0, i - 1) {
      |                 ^
answer.code:15:40: note: in definition of macro ‘rep’
   15 | #define rep(i, x, y) for (register int i = (x); i <= (y); ++i)
      |                                        ^
answer.code:68:13: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   68 |         rep(i, 0, nown - 1) a[i] = (LL)a[i] * (LL)inv % mod;
      |             ^
answer.code:15:40: note: in definition of macro ‘rep’
   15 | #define rep(i, x, y) for (register int i = (x); i <= (y); ++i)
      |                                        ^
answer.code: In function ‘int main()’:
answer.code:73:9: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   73 |     rep(i, 0, n - 1) f[i] = read() % mod;
      |         ^
answer.code:15:40: note: in definition of macro ‘rep’
   15 | #define rep(i, x, y) for (register int i = (x); i <= (y); ++i)
      |                                        ^
answer.code:77:13: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   77 |         rep(i, 0, nown - 1) tmp[i] = f[i];
      |             ^
answer.code:15:40: note: in definition of macro ‘rep’
   15 | #define rep(i, x, y) for (register int i = (x); i <= (y); ++i)
      |                                        ^
answer.code:79:13: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   79 |         rep(i, 1, nown - 1) r[i] = (r[i >> 1] >> 1) | ((i & 1) << (nowlen - 1));
      |             ^
answer.code:15:40: note: in definition of macro ‘rep’
   15 | #define rep(i, x, y) for (register int i = (x); i <= (y); ++i)
      |                                        ^
answer.code:80:13: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   80 |         rep(i, (tmpn << 1), nown - 1) tmp[i] = 0;
      |             ^
answer.code:15:40: note: in definition of macro ‘rep’
   15 | #define rep(i, x, y) for (register int i = (x); i <= (y); ++i)
      |                                        ^
answer.code:82:13: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   82 |         rep(i, 0, nown - 1) g[len + 1][i] = ((2ll - (LL)tmp[i] * (LL)g[len][i]) % mod + mod) * (LL)g[len][i] % mod;
      |             ^
answer.code:15:40: note: in definition of macro ‘rep’
   15 | #define rep(i, x, y) for (register int i = (x); i <= (y); ++i)
      |                                        ^
answer.code:84:13: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   84 |         rep(i, (tmpn << 1), nown - 1) g[len + 1][i] = 0;
      |             ^
answer.code:15:40: note: in definition of macro ‘rep’
   15 | #define rep(i, x, y) for (register int i = (x); i <= (y); ++i)
      |                                        ^
answer.code:86:9: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   86 |     rep(i, 0, n - 1) printf("%d ", g[len][i]);
      |         ^
answer.code:15:40: note: in definition of macro ‘rep’
   15 | #define rep(i, x, y) for (register int i = (x); i <= (y); ++i)
      |                                        ^
/tmp/cc48rITw.o: in function `main':
answer.code:(.text.startup+0x2b): relocation truncated to fit: R_X86_64_PC32 against symbol `f' defined in .bss section in /tmp/cc48rITw.o
answer.code:(.text.startup+0x7d): relocation truncated to fit: R_X86_64_PC32 against symbol `f' defined in .bss section in /tmp/cc48rITw.o
answer.code:(.text.startup+0x185): relocation truncated to fit: R_X86_64_PC32 against symbol `f' defined in .bss section in /tmp/cc48rITw.o
collect2: error: ld returned 1 exit status