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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#556806 | #9237. Message | zhouhuanyi | 0 | 318ms | 4096kb | C++17 | 3.6kb | 2024-09-10 21:07:41 | 2024-09-10 21:07:43 |
Judging History
answer
#include "message.h"
#include<iostream>
#include<cstdio>
#include<cstdlib>
#define N 32
using namespace std;
const __int128 mod=((__int128)(1)<<69)-19;
int r[32],rd[30][32],tong[N+1],length;
bool used[32],delta[1025],nprime[N+1],vis[1<<16];
unsigned long long seed;
bool get_rand()
{
seed^=(seed<<7);
seed^=(seed<<13);
seed^=(seed>>19);
return seed&1;
}
void send_message(std::vector<bool> M, std::vector<bool> C)
{
int ps=-1,rst=0,rst2=0;
vector<bool>p;
seed=998244353;
for (int i=1;i<=10;++i)
for (int j=0;j<=30;++j)
rd[i][j]=get_rand();
for (int i=0;i<=1024;++i) delta[i]=0;
for (int i=0;i<M.size();++i) delta[i]=M[i];
delta[M.size()]=1,length=0;
for (int i=1;i<=N;++i) nprime[i]=0;
for (int i=2;i<=N;++i)
if (!nprime[i])
{
for (int j=(i<<1);j<=N;j+=i) nprime[j]=1;
}
for (int i=N;i>=2;--i)
if (!nprime[i])
{
for (int j=1;j<=4;++j)
if (length+1<=31)
tong[++length]=i;
}
for (int i=0;i<=15;++i)
if (!C[i])
rst|=(1<<i);
for (int i=16;i<=30;++i)
if (!C[i])
rst2|=(1<<(i-16));
for (int i=1;i<=5;++i)
{
p.clear();
for (int j=0;j<=30;++j)
{
if (!C[j]) p.push_back((((rst%tong[j+1])>>(i-1))&1)^rd[i][j]);
else p.push_back(get_rand());
}
send_packet(p);
}
for (int i=1;i<=5;++i)
{
p.clear();
for (int j=0;j<=30;++j)
{
if (!C[j]) p.push_back((((rst2%tong[j+1])>>(i-1))&1)^rd[i+5][j]);
else p.push_back(get_rand());
}
send_packet(p);
}
for (int i=1;i<=66;++i)
{
p.clear();
for (int j=0;j<=30;++j)
{
if (C[j]) p.push_back(get_rand());
else if (ps+1<=1024) p.push_back(delta[++ps]);
else p.push_back(get_rand());
}
send_packet(p);
}
return;
}
std::vector<bool> receive_message(std::vector<std::vector<bool>> R)
{
int ps=-1,rst=-1,rst2=-1,cnt;
vector<bool>p;
vector<int>A;
vector<int>B;
seed=998244353;
for (int i=1;i<=10;++i)
for (int j=0;j<=30;++j)
rd[i][j]=get_rand();
for (int i=0;i<=1024;++i) delta[i]=0;
length=0;
for (int i=1;i<=N;++i) nprime[i]=0;
for (int i=2;i<=N;++i)
if (!nprime[i])
{
for (int j=(i<<1);j<=N;j+=i) nprime[j]=1;
}
for (int i=N;i>=2;--i)
if (!nprime[i])
{
for (int j=1;j<=4;++j)
if (length+1<=31)
tong[++length]=i;
}
for (int i=0;i<=1024;++i) delta[i]=0;
for (int i=1;i<=31;++i) r[i]=0;
for (int i=1;i<=5;++i)
for (int j=0;j<=30;++j)
if (R[i+4][j]^rd[i+5][j])
r[j+1]|=(1<<(i-1));
for (int i=0;i<(1<<15);++i) vis[i]=0;
for (int i=1;i<=31&&rst2==-1;++i)
for (int j=r[i];j<(1<<15);j+=tong[i])
if (!vis[j])
{
vis[j]=1,cnt=0;
for (int k=1;k<=31;++k) cnt+=(j%tong[k]==r[k]);
if (cnt>=16)
{
rst2=j;
break;
}
}
for (int i=1;i<=31;++i) r[i]=0;
for (int i=1;i<=5;++i)
for (int j=0;j<=30;++j)
if (R[i-1][j]^rd[i][j])
r[j+1]|=(1<<(i-1));
for (int i=0;i<(1<<16);++i) vis[i]=0;
for (int i=1;i<=31&&rst==-1;++i)
for (int j=r[i];j<(1<<16);j+=tong[i])
if (!vis[j]&&__builtin_popcount(j)+__builtin_popcount(rst2)==16)
{
vis[j]=1,cnt=0;
for (int k=1;k<=31;++k) cnt+=(j%tong[k]==r[k]);
if (cnt>=16)
{
rst=j;
break;
}
}
for (int i=1;i<=31;++i) r[i]=0;
for (int i=1;i<=5;++i)
for (int j=0;j<=30;++j)
if (R[i+4][j]^rd[i+5][j])
r[j+1]|=(1<<(i-1));
for (int i=0;i<=15;++i) used[i]=(rst>>i)&1;
for (int i=16;i<=30;++i) used[i]=(rst2>>(i-16))&1;
for (int i=1;i<=66;++i)
for (int j=0;j<=30;++j)
if (used[j]&&ps+1<=1024)
delta[++ps]=R[i+9][j];
for (int i=ps;i>=0;--i)
if (delta[i])
{
for (int j=0;j<=i-1;++j) p.push_back(delta[j]);
break;
}
return p;
}
Details
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Subtask #1:
score: 0
Wrong Answer
Test #1:
score: 5.987
Acceptable Answer
time: 291ms
memory: 3844kb
Manager to Aisha
Aisha to Manager
Manager to Basma
Basma to Manager
Manager to Checker
0.5987
result:
points 0.5987
Test #2:
score: 5.987
Acceptable Answer
time: 265ms
memory: 3932kb
Manager to Aisha
Aisha to Manager
Manager to Basma
Basma to Manager
Manager to Checker
0.5987
result:
points 0.5987
Test #3:
score: 5.987
Acceptable Answer
time: 270ms
memory: 3900kb
Manager to Aisha
Aisha to Manager
Manager to Basma
Basma to Manager
Manager to Checker
0.5987
result:
points 0.5987
Test #4:
score: 5.987
Acceptable Answer
time: 276ms
memory: 4096kb
Manager to Aisha
Aisha to Manager
Manager to Basma
Basma to Manager
Manager to Checker
0.5987
result:
points 0.5987
Test #5:
score: 0
Wrong Answer
time: 129ms
memory: 3904kb
Manager to Aisha
Aisha to Manager
Manager to Basma
Basma to Manager
Manager to Checker
0 ing with message 'decoded message is incorrect' Sending secret with code DIE to mgr2sol[1] Quitting with result code 1
result:
wrong output format Extra information in the output file
Subtask #2:
score: 0
Instance #0 Time Limit Exceeded
Test #8:
score: 53.883
Acceptable Answer
time: 283ms
memory: 3904kb
Manager to Aisha
Aisha to Manager
Manager to Basma
Basma to Manager
Manager to Checker
0.5987
result:
points 0.5987
Test #9:
score: 53.883
Acceptable Answer
time: 270ms
memory: 4060kb
Manager to Aisha
Aisha to Manager
Manager to Basma
Basma to Manager
Manager to Checker
0.5987
result:
points 0.5987
Test #10:
score: 53.883
Acceptable Answer
time: 318ms
memory: 3876kb
Manager to Aisha
Aisha to Manager
Manager to Basma
Basma to Manager
Manager to Checker
0.5987
result:
points 0.5987
Test #11:
score: 0
Instance #0 Time Limit Exceeded
Manager to Aisha
Aisha to Manager
Manager to Basma
Basma to Manager
Manager to Checker
0 ing with message 'manual RTE, cant read int from grader' Sending secret with code DIE to mgr2sol[1] Quitting with result code 1