#pragma GCC optimize("Ofast") #pragma GCC target("avx2") #define rd_init() char*rp=({char*mmap();mmap(0l,1l<<25,1,2,0,0ll);}) #define rd() ({int _v=0,_c;while(_c=*rp++-48,_c>=0)_v=_v*10+_c;_v;}) #define wt(v) ({unsigned _z=v;do*--wp=_z%10+48;while(_z/=10);}) #define wt1(v) ({char wbuf[64],*wp=wbuf+sizeof wbuf;wt(v);write(1,wp,wbuf+sizeof wbuf-wp);}) int main(){ rd_init(); char*rp0=rp; int n=rd(); int s[64]; fstat(0,s); rp=rp0+s[12]-1; while(*--rp>=48){ } ++rp; int z=rd()-n; wt1(z); _exit(0); }