QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#673938 | #8726. Magic Show | Physics212303 | 0 | 0ms | 0kb | C++17 | 1.6kb | 2024-10-25 11:59:32 | 2024-10-25 11:59:32 |
Alice
#include "Alice.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
const int N=5000;
mt19937 g(time(0)),g2(1e9+9);
uniform_int_distribution<> u(100,200);
inline vector<int> gen(){
vector<int> p(N);
iota(p.begin(),p.end(),0);
shuffle(p.begin(),p.end(),g2);
return p;
}
vector<pii> Alice(){
ll X=setN(N);
vector<pii> e;
int B=u(g);
for(int i=3001;i<=N;i++)
e.emplace_back(i,B+i/62);
vector<int> v;
while(X)v.emplace_back(X%B),X/=B;
for(int i=1501;i<=3000;i++)
e.emplace_back(i,v.size()+i/63);
for(int i=501,c=0;i<=1500;i++,c%=v.size())
e.emplace_back(i,v[c++]+i/64);
for(int i=2;i<=500;i++)
e.emplace_back(i,g()%(i-1)+1);
auto p=gen();
for(auto &[x,y]:e)
assert(x<=y),x=p[x-1]+1,y=p[y-1]+1;
shuffle(e.begin(),e.end(),g);
return e;
}
Bob
#include "Bob.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
const int N=5000;
mt19937 g2(1e9+9);
inline vector<int> gen(){
vector<int> p(N),a(N);
iota(p.begin(),p.end(),0);
shuffle(p.begin(),p.end(),g2);
for(int i=0;i<N;i++)
a[p[i]]=i;
return a;
}
ll Bob(vector<pii> e){
int B=-1,E=-1;
vector<int> X(N,-1);
auto p=gen();
for(auto &[x,y]:e){
x=p[x-1]+1,y=p[y-1]+1;
if(x>y)swap(x,y);
if(y>3000)B=x-y/62;
else if(y>1500)E=x-y/63;
else if(y>500)X[y-501]=x-y/64;
}
assert(~B&&~E);
vector<int> v(E);
for(int i=501;i<=1500;i++)
if(~X[i-501])v[(i-501)%E]=X[i-501];
ll c=0,s=1;
for(int i=0;i<E;i++,s*=B)
c+=s*v[i];
return c;
}
Details
Tip: Click on the bar to expand more detailed information
Subtask #1:
score: 0
Runtime Error
Test #1:
score: 0
Runtime Error
input:
1 4005
output:
Subtask #2:
score: 0
Runtime Error
Test #13:
score: 0
Runtime Error
input:
1 17476204
output:
Subtask #3:
score: 0
Runtime Error
Test #25:
score: 0
Runtime Error
input:
1 355365355024496523