| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 873717 | 12345678 | Parrots (IOI11_parrots) | C++17 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "encoder.h"
#include "encoderlib.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int nx=70, kx=256;
struct bignum
{
vector<ll> val;
bignum(): val(nx, 0){}
bignum(ll x)
{
val.assign(nx, 0);
for (int i=0; i<nx&&x>0; i++)
{
val[i]=x%kx;
x/=kx;
}
}
bignum &operator+=(const bignum &rhs)
{
ll carry=0;
for (int i=0; i<nx; i++)
{
val[i]+=rhs.val[i]+carry;
carry=val[i]/kx;
val[i]-=carry*kx;
}
return *this;
}
bignum &operator-=(const bignum &rhs)
{
ll carry=0;
for (int i=0; i<nx; i++)
{
val[i]-=rhs.val[i]+carry;
carry=0;
if (val[i]<0) {
val[i]+=kx;
carry++;
}
}
return *this;
}
bignum &operator*=(const ll &rhs)
{
ll carry=0;
for (int i=0; i<nx; i++)
{
val[i]*=rhs;
val[i]+=carry;
carry=val[i]/kx;
val[i]-=carry*kx;
}
return *this;
}
friend bignum operator+(const bignum &lhs, const bignum &rhs) {return bignum(lhs)+=rhs;}
friend bignum operator-(const bignum &lhs, const bignum &rhs) {return bignum(lhs)+=rhs;}
friend bignum operator*(const bignum &lhs, const ll &rhs) {return bignum(lhs)*=rhs;}
friend bignum operator*(const ll &lhs, const bignum &rhs) {return bignum(rhs)*=lhs;}
int cmp(const bignum &rhs) {
for (int i=nx-1; i>=0; i--)
{
if (val[i]<rhs.val[i]) return -1;
if (val[i]>rhs.val[i]) return 1;
}
return 0;
}
bool operator<(const bignum &rhs) {return cmp(rhs)==-1;}
bool operator>(const bignum &rhs) {return cmp(rhs)==1;}
bool operator<=(const bignum &rhs) {return cmp(rhs)!=1;}
bool operator>=(const bignum &rhs) {return cmp(rhs)!=-1;}
bool operator==(const bignum &rhs) {return cmp(rhs)==0;}
bool operator!=(const bignum &rhs) {return cmp(rhs)!=0;}
string to_str()
{
auto res=val;
while (res.size()>1&&res.back()==0) res.pop_back();
reverse(res.begin(), res.end());
string s="";
for (auto x:res) s+=to_string(x)+" ";
s.pop_back();
return s;
}
};
void encode(int N, int M[])
{
bignum vl, tmp;
vector<vector<bignum>> dp(580, vector<bignum> (580));
for (int i=0; i<N; i++) vl.val[i]=M[N-1-i];
for (int i=0; i<580; i++)
{
for (int j=0; j<=i; j++)
{
if (j==0||j==i) dp[i][j].val[0]=1;
else dp[i][j]=dp[i-1][j]+dp[i-1][j-1];
//cout<<i<<' '<<j<<'\n';
//cout<<dp[i][j].to_str()<<'\n';
}
}
vector<int> s(kx+1);
int left=320;
//cout<<vl.to_str()<<'\n';
for (int i=0; i<kx; i++)
{
tmp=0;
for (int j=left; j>=0; j--)
{
if (dp[kx-i-1+left-j][kx-i-1]+tmp>vl)
{
vl-=tmp;
s[i]=j;
left-=j;
break;
}
tmp+=dp[kx-i-1+left-j][kx-i-1];
//if (i==1) cout<<"here"<<' '<<j<<' '<<tmp.to_str()<<'\n';
}
//cout<<i<<' '<<s[i]<<'\n';
//if (i==0) cout<<vl.to_str()<<'\n';
//if (i==0) cout<<tmp.to_str()<<'\n';
}
s[kx]=left;
for (int i=0; i<kx; i++) for (int j=0; j<s[i+1]; j++) send(i);
for (int i=0; i<kx+1; i++)
{
//if (s[i]!=0) printf("%d %d\n", i, s[i]);
}
}
#include "encoder.h"
#include "encoderlib.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
void decode(int N, int L, int X[])
{
bignum res=0;
int sm=0;
vector<int> s(kx+1, 0);
for (int i=0; i<L; i++) s[X[i]+1]++, sm++;
s[0]=320-sm;
vector<vector<bignum>> dp(580, vector<bignum> (580));
for (int i=0; i<580; i++)
{
for (int j=0; j<=i; j++)
{
if (j==0||j==i) dp[i][j].val[0]=1;
else dp[i][j]=dp[i-1][j]+dp[i-1][j-1];
}
}
int left=320;
for (int i=0; i<kx; i++)
{
for (int j=left; j>s[i]; j--)
{
res+=dp[kx-i-1+left-j][kx-i-1];
}
left-=s[i];
//cout<<i<<' '<<left<<'\n';
}
res+=s[kx];
vector<int> ans(N);
for (int i=0; i<N; i++) ans[N-1-i]=res.val[i];
for (int i=0; i<N; i++) output(ans[i]);
//cout<<"here"<<res.to_str()<<'\n';
}
/*
10
1 1 2 1 2 3 1 7 10 9
*/