高精度模板.

#include <iostream>
#include <string>
#include <cstring>
#include <cstdio>
using namespace std;

const int maxn = 1000;

struct bign{
    int d[maxn], len;

    void clean() { while(len > 1 && !d[len-1]) len--; }

    bign()             { memset(d, 0, sizeof(d)); len = 1; }
    bign(int num)     { *this = num; } 
    bign(char* num) { *this = num; }
    bign operator = (const char* num){
        memset(d, 0, sizeof(d)); len = strlen(num);
        for(int i = 0; i < len; i++) d[i] = num[len-1-i] - '0';
        clean();
        return *this;
    }
    bign operator = (int num){
        char s[20]; sprintf(s, "%d", num);
        *this = s;
        return *this;
    }

    bign operator + (const bign& b){
        bign c = *this; int i;
        for (i = 0; i < b.len; i++){
            c.d[i] += b.d[i];
            if (c.d[i] > 9) c.d[i]%=10, c.d[i+1]++;
        }
        while (c.d[i] > 9) c.d[i++]%=10, c.d[i]++;
        c.len = max(len, b.len);
        if (c.d[i] && c.len <= i) c.len = i+1;
        return c;
    }
    bign operator - (const bign& b){
        bign c = *this; int i;
        for (i = 0; i < b.len; i++){
            c.d[i] -= b.d[i];
            if (c.d[i] < 0) c.d[i]+=10, c.d[i+1]--;
        }
        while (c.d[i] < 0) c.d[i++]+=10, c.d[i]--;
        c.clean();
        return c;
    }
    bign operator * (const bign& b)const{
        int i, j; bign c; c.len = len + b.len; 
        for(j = 0; j < b.len; j++) 
                  for(i = 0; i < len; i++) 
                   c.d[i+j] += d[i] * b.d[j];
        for(i = 0; i < c.len-1; i++)
            c.d[i+1] += c.d[i]/10, c.d[i] %= 10;
        c.clean();
        return c;
    }
    bign operator / (const bign& b){
        int i, j;
        bign c = *this, a = 0;
        for (i = len - 1; i >= 0; i--)
        {
            a = a*10 + d[i];
            for (j = 0; j < 10; j++) if (a < b*(j+1)) break;
            c.d[i] = j;
            a = a - b*j;
        }
        c.clean();
        return c;
    }
    bign operator % (const bign& b){
        int i, j;
        bign a = 0;
        for (i = len - 1; i >= 0; i--)
        {
            a = a*10 + d[i];
            for (j = 0; j < 10; j++) if (a < b*(j+1)) break;
            a = a - b*j;
        }
        return a;
    }
    bign operator += (const bign& b){
        *this = *this + b;
        return *this;
    }

    bool operator <(const bign& b) const{
        if(len != b.len) return len < b.len;
        for(int i = len-1; i >= 0; i--)
            if(d[i] != b.d[i]) return d[i] < b.d[i];
        return false;
    }
    bool operator >(const bign& b) const{return b < *this;}
    bool operator<=(const bign& b) const{return !(b < *this);}
    bool operator>=(const bign& b) const{return !(*this < b);}
    bool operator!=(const bign& b) const{return b < *this || *this < b;}
    bool operator==(const bign& b) const{return !(b < *this) && !(b > *this);}

    string str() const{
        char s[maxn]={};
        for(int i = 0; i < len; i++) s[len-1-i] = d[i]+'0';
        return s;
    }
};

istream& operator >> (istream& in, bign& x)
{
    string s;
    in >> s;
    x = s.c_str();
    return in;
}

ostream& operator << (ostream& out, const bign& x)
{
    out << x.str();
    return out;
}
int main()
{
    freopen("noip.in","r",stdin);
    freopen("noip.out","w",stdout); 
    bign s=0,t;
    while (cin>>t)
    {
        if (t.len==1&&!t.d[0]) break;
        s=s+t;
    }
    cout<<s<<endl;
    return 0;
}

 写了个没有/和后面运算的简单一点的。。都是自己可以理解语法

矩阵取数游戏

/也挺简单 但感觉noip用不到

注意加完之后 要把剩下的10给模掉 刚开始这里写错了

#include <bits/stdc++.h>
using namespace std;
#define rg register
#define rint register int
#define IL inline
#define rep(i,h,t) for (int i=h;i<=t;i++)
#define dep(i,t,h) for (int i=t;i>=h;i--)
#define me(x) memset(x,0,sizeof(x))
#define setit set<int>::iterator
#define lowbit(x) (x&(-x))
#define fi first
#define se second
#define mp make_pair
#define mid ((h+t)>>1)
#define mid2 ((h+t+1)>>1)
#define ll long long
char ss[1<<24],*A=ss,*B=ss;
IL char gc()
{
  return A==B&&(B=(A=ss)+fread(ss,1,1<<24,stdin),A==B)?EOF:*A++;
}
template<class T>IL void read(T &x)
{
  rint f=1,c; while (c=gc(),c<48||c>57) if (c=='-') f=-1; x=(c^48);
  while (c=gc(),c>47&&c<58) x=(x<<3)+(x<<1)+(c^48); x*=f;
}
char sr[1<<24],z[20]; int C=-1,Z;
template<class T>IL void wer(T x)
{
  if (x<0) sr[++C]='-',x=-x;
  while (z[++Z]=x%10+48,x/=10);
  while (sr[++C]=z[Z],--Z);
}
IL void wer1()
{
  sr[++C]=' ';
}
IL void wer2()
{
  sr[++C]='
';
}
template<class T> IL void maxa(rg T &x,rg T y)
{
  if (x<y) x=y;
}
template<class T> IL void mina(rg T &x,rg T y)
{
  if (x>y) x=y;
}
template<class T>IL T MAX(rg T x,rg T y)
{
  return x>y?x:y;
}
template<class T>IL T MIN(rg T x,rg T y)
{
  return x<y?x:y;
}
const int INF=1e9;
struct bign{
  int d[100],len;
  IL void clear()
  {
    while (len>1&&!d[len-1]) len--;
  }
  bign()
  {
    len=1; me(d);
  }
  bign(char *c)
  {
    *this=c;
  }
  bign(int num)
  {
    *this=num;
  }
  bign operator =(const char *c)
  {
    me(d); //没有就错了 不知道为什么
    len=strlen(c);
    rep(i,0,len-1)
      d[i]=c[len-i-1]-'0';
    return *this;
  }
  bign operator =(const int num)
  {
    char s[20]={};
    sprintf(s,"%d",num);
    *this=s;
    return *this;
  }
  bign operator +(const bign c)
  {
    bign b=*this;
    int i;
    for (i=0;i<c.len;i++)
      b.d[i]+=c.d[i],b.d[i+1]+=b.d[i]/10,b.d[i]%=10;
    while (b.d[i]>9) b.d[i]%=10,i++,b.d[i]++;
    maxa(b.len,c.len);
    if (b.d[b.len]) b.len++;
    return b;
  }
  bign operator *(const bign c)
  {
    bign b;
    b.len=c.len+len;
    for (int i=0;i<c.len;i++)
      for (int j=0;j<len;j++)
        b.d[i+j]+=c.d[i]*d[j];
    for (int i=0;i<b.len;i++)
      b.d[i+1]+=b.d[i]/10,b.d[i]%=10;
    b.clear();
    return b;
  }
  bool operator <(const bign c)
  {
    if (len<c.len) return(1);
    if (len>c.len) return(0);
    for (int i=len-1;i>=0;i--)
    {
      if (d[i]<c.d[i]) return(1);
      if (d[i]>c.d[i]) return(0);
    }
  }
  string str()
  {
    char s[100]={};
    for (int i=len-1;i>=0;i--) s[i]=d[len-i-1]+'0';
    return s;
  }
};
bign f[100];
int a[100];
bign g[100][100];
int main()
{
  int n,m;
  read(n); read(m);
  f[0]=1;
  rep(i,1,80) f[i]=f[i-1]*2;
  bign tt=0;
  rep(i,1,n)
  {
    rep(j,1,m) read(a[j]);
    bign num=0;
    rep(j1,0,m)
      dep(j2,m+1,j1+1)
      {
        bign ans=0;
        if (j1>0) ans=g[j1-1][j2]+f[j1+m+1-j2]*a[j1];
        bign ans2=0;
        if (j2<m+1) ans2=g[j1][j2+1]+f[j1+m+1-j2]*a[j2];
        if (ans<ans2) g[j1][j2]=ans2; else g[j1][j2]=ans;
      }
   rep(j1,0,m)
     if (num<g[j1][j1+1]) num=g[j1][j1+1];    
   tt=tt+num;
  }
  cout<<tt.str()<<endl; 
  fwrite(sr,1,C+1,stdout);
  return 0;
}