快读

快读

char buf[1<<20],*P1=buf,*P2=buf;
#define gc() (P1==P2&&(P2=(P1=buf)+fread(buf,1,1<<20,stdin),P1==P2)?EOF:*P1++)
#define gc() getchar()
#define TT template<class T>inline
TT bool read(T &x){
    x=0;register char c=gc();register bool f=0;
    while(c<48||c>57){if(c==EOF)return 0;f^=c=='-',c=gc();}
    while(47<c&&c<58)x=(x<<3)+(x<<1)+(c^48),c=gc();
    if(f)x=-x;return 1;
}
TT bool read(T&a,T&b){return read(a)&&read(b);}
TT bool read(T&a,T&b,T&c){return read(a)&&read(b)&&read(c);}
template<class T>inline void print(T x){
    if(x<0)putchar('-'),x=-x;
    if(x>9)print(x/10);
    putchar('0'+x%10);
}
TT void print(T x,char c){print(x),putchar(c);}