蒟蒻自传

太菜没资格写自传��?
今年已经初三高一了,还是拿不到普及一等场场模拟赛爆蛋,感觉药丸��?
现就读柯桥区实验中学绍兴市第一中学,望神犇赐教��?

OJ账号��?luogu

Lydsy

codeforces

codeforces刷题号

Atcoder

IO模板

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#include<bits/stdc++.h>
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast")
#pragma target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
using namespace std;
typedef long long ll;
#define Rep(i,a,b) for(register int i=(a);i<=int(b);++i)
#define Dep(i,a,b) for(register int i=(a);i>=int(b);--i)
#define rep(i,a,b) for(register int i=(a);i<int(b);++i)
#define mem(x,v) memset(x,v,sizeof(x))
#define fi first
#define se second
#define debug(x) cout << #x" = " << x << endl;
#define pp(x,y) cout << "pp: " << x << " " << y << endl;
namespace IO{
const int L=1<<15;char ibuf[L|1],*iS=ibuf,*iT=ibuf,obuf[L|1],*oS=obuf,*oT=obuf+L,c,st[66];int tp=0,f;
inline char gc(){if(iS==iT) iT=(iS=ibuf)+fread(ibuf,sizeof(char),L,stdin);return (*iS++);}
inline void flush(){fwrite(obuf,sizeof(char),oS-obuf,stdout);oS = obuf;}
inline void pc(char c){*oS++=c;if(oS==oT) flush();}
inline ll read(){ll x=0;f=1,c=gc();for(;!isdigit(c);c=gc())if(c=='-')f=-1;for(;isdigit(c);c=gc())x=(x<<1)+(x<<3)+(c&15);return x*f;}
inline void write(ll x){if(!x) pc('0');if(x<0) pc('-'),x=-x;while(x) st[++tp]=x%10+'0',x/=10;while(tp) pc(st[tp--]);}
inline void writeln(ll x){write(x);pc('\n');}
struct IOflusher{~IOflusher(){flush();}}_ioflusher_;
}using IO::read;using IO::write;using IO::writeln;using IO::gc;using IO::pc;
ll ans = 0;
int main(){
int n = 3000000;
while(n--) ans^=read();
writeln(ans);
return 0;
}
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