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 "prison.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define rep(a,b) for (int a = 0; a < (b); ++a)
#define pb push_back
#define all(t) t.begin(), t.end()
struct Przedzial
{
int l,p, idx;
};
const int MAXM = 21;
vector<vector<int>> wyn;
vector<bool> doit;
inline Przedzial zejdz(int l, int p, int idx)
{
if(l == p)
{
return{l,p,1};
}
if (l+1 == p)
{
if(idx == l) return {l,l,1};
return {p,p,2};
}
int s = (p-l+1) / 3;
if((p-l+1) % 3 == 0 or (p-l+1) % 3 == 1)
{
if(idx <= l+s-1) return {l,l+s-1,1};
else if(idx <= l+2*s-1) return {l+s,l+2*s-1,2};
else return {l+2*s,p,3};
}
else
{
if(idx <= l+s-1) return {l,l+s-1,1};
else if(idx <= l+2*s) return {l+s,l+2*s,2};
else return {l+2*s+1,p,3};
}
}
vector<vector<int>> devise_strategy(int N)
{
wyn.assign(MAXM+1,{});
rep(i,MAXM+1) wyn[i].assign(N+1,-1);
doit.assign(MAXM+1,false);
wyn[0][0] = 0;
for(int i = 1; i <= N; ++i)
{
if(i == 1) wyn[0][i] = -1;
else if (i == N) wyn[0][i] = -2;
else
{
wyn[0][i] = zejdz(2,N-1,i).idx;
doit[wyn[0][i]] = true;
}
}
for(int i = 1; i <= MAXM; ++i)
{
int ile = (i-1) / 3 + 1, gdzie_zeszlem = i % 3;
if(gdzie_zeszlem == 0) gdzie_zeszlem = 3;
bool czy_pochodze_z_A = true;
if(ile % 2 == 0) czy_pochodze_z_A = false;
if(czy_pochodze_z_A) wyn[i][0] = 1;
else wyn[i][0] = 0;
if(doit[i] == false) continue;
for(int j = 1; j <= N; ++j)
{
Przedzial akt = {1,N};
rep(k,ile-1) akt = zejdz(akt.l+1,akt.p-1,j);
if(akt.l == j)
{
if(czy_pochodze_z_A) wyn[i][j] = -2;
else wyn[i][j] = -1;
continue;
}
else if (akt.p == j)
{
if(czy_pochodze_z_A) wyn[i][j] = -1;
else wyn[i][j] = -2;
continue;
}
akt = zejdz(akt.l+1,akt.p-1,j);
if(akt.idx < gdzie_zeszlem)
{
if(czy_pochodze_z_A) wyn[i][j] = -2;
else wyn[i][j] = -1;
}
else if (akt.idx > gdzie_zeszlem)
{
if(czy_pochodze_z_A) wyn[i][j] = -1;
else wyn[i][j] = -2;
}
else if(akt.l == j)
{
if(czy_pochodze_z_A) wyn[i][j] = -2;
else wyn[i][j] = -1;
}
else if (akt.p == j)
{
if(czy_pochodze_z_A) wyn[i][j] = -1;
else wyn[i][j] = -2;
}
else
{
akt = zejdz(akt.l+1,akt.p-1,j);
wyn[i][j] = ile*3+akt.idx;
doit[wyn[i][j]] = true;
}
}
}
for(int i = 0; i <= MAXM; ++i)
{
for (int j = 0; j <= N; ++j) wyn[i][j] = min(wyn[i][j],MAXM);
}
return wyn;
}
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