#pragma GCC optimize("Ofast") #pragma GCC target("avx2") char*mmap(); #define rd(v) int v=0;{int _c;while(_c=*rp++-48,_c>=0)v=v*10+_c;} char wbuf[1<<28]; #define WTHI(v) {long _z=v,_n=0,_d=0;while(++_n,_d=_d<<8|0x30|_z%10,_z/=10);*(long*)wp=_d;wp+=_n;} #define WTLO(v) {long _z=v,_n=8,_d=0;while(_d=_d<<8|0x30|_z%10,_z/=10,--_n);*(long*)wp=_d;wp+=8;} #define wt(v) WTHI(v) #define L 1024 char d0[L],d1[L]; main(){ char*rp=mmap(0l,1l<<28,1,2,0,0ll); char*wp=wbuf; rd(n); int z=1; d0[0]=1; while(n--){ rd(a); for(int j=0;j