输出读入优化——QAQ
#include<bits/stdc++.h> const int RN=1e5; char ib[RN+5],*ip=ib+RN,ob[RN+1007],*op=ob; inline int gc(){ ip==ib+RN?fread(ip=ib,1,RN,stdin)[ib]=0:0; return*ip++; } struct IO{ void flush(){ fwrite(ob,1,op-ob,stdout),op=ob; } template<class T>//T=int,long long IO&operator>>(T&x0){ T x=0; int f=1; if(ip<ib+RN-100){ while(*ip<48)*ip++=='-'?f=-1:0; while(*ip>47)x=x*10+*ip++-48; }else{ int c=gc(); while(c<48)c=='-'?f=-1:0; while(c>47)x=x*10+c-48,c=gc(); } x0=x; return *this; } IO&operator>>(char*s){ int c=gc(); while(c<33)c=gc(); while(c>32)*s++=c,c=gc(); *s=0; return *this; } template<class T>//T=int,long long,char IO&operator<<(T x){ if(op>ob+RN)flush(); int ss[25],sp=0; if(x<0)*op++='-',x=-x; do ss[++sp]=48+x%10;while(x/=10); while(sp)*op++=ss[sp--]; return *this; } IO&operator<<(char x){ if(op>ob+RN)flush(); *op++=x; return *this; } IO&operator<<(const char*str){ int n=strlen(str); if(op+n>ob+RN)flush(); if(n<RN)memcpy(op,str,n),op+=n; else fwrite(str,1,n,stdout); return *this; } IO&operator<<(char*str){ return *this<<(const char*)str; } IO&operator<<(std::string str){ return *this<<str.data(); } }io; int main(){ freopen("in.txt","r",stdin); int a,b; io>>a>>b; io<<a<<'+'<<b<<'='<<a+b<<'\n'; io<<"test_string_output\n"; char s[111]; io>>s; io<<s<<'\n'; io.flush(); freopen("o.txt","w",stdout); for(int i=0;i<10000000;++i)io<<i<<' '; io.flush(); return 0; }