Submission #1011750

#	Time	Username	Problem	Language	Result	Execution time	Memory
1011750		vjudge1	Magic Show (APIO24_show)	C++17	Compilation error	0 ms	0 KiB

Alice

#include <bits/stdc++.h>
#include "Bob.h"
using namespace std;
// you may define some global variables, but it does not work if you try to transfer any information from function Alice() to function Bob() through these variables.
// you had better not use the same global variables in function Alice() and in function Bob().
set<int> vv[5000];
vector<int> VVV(4999),v2v[5000];
int cap[5000],pos[5000];
mt19937 rng2(1987042837);
void gen2(){
    int sum=0;
    for(int i=2;i<5000;i++)
        sum+=cap[i]=log2(i-1);
    sum/=60;
    vector<int>Z(60),Z2(4998);
    iota(Z.begin(),Z.end(),0);
    iota(Z2.begin(),Z2.end(),2);
    iota(VVV.begin(),VVV.end(),1);
    shuffle(Z.begin(),Z.end(),rng2);
    shuffle(VVV.begin(),VVV.end(),rng2);
    for(int i=0;i<4999;i++)
        pos[VVV[i]]=i;
    for(auto j:Z){
        int x=sum;
        shuffle(Z2.begin(),Z2.end(),rng2);
        for(auto i:Z2)if(cap[i]*!vv[i].count(j)*x)
            cap[i]--,vv[i].insert(j),x--;
    }
    for(auto i:Z2)while(cap[i]){
        vector<int>VVV(60);
        iota(VVV.begin(),VVV.end(),0);
        shuffle(VVV.begin(),VVV.end(),rng2);
        int x=-1;
        for(auto j:VVV)
            if(!vv[i].count(j)){
                x=j;
                break;
            }
        vv[i].insert(x);
        cap[i]--;
    }
    for(auto i:Z2)
        for(auto j:vv[i])
            v2v[i].push_back(j);
    for(auto i:Z2)shuffle(v2v[i].begin(),v2v[i].end(),rng2);
}
long long Bob(std::vector<std::pair<int,int>> V){
    long long ans=0;
    gen2();
    int tot=0;
    for(auto i:V){
        auto[a,b]=i;
        if(pos[a]>pos[b])
            swap(a,b);
        int k=pos[b]+1,q=pos[a];
        vector<int>v22=v2v[k];
        reverse(v22.begin(),v22.end());
        for(auto i:v22){
            ans|=(q&1ll)<<i;
            q/=2;
        }
    }
    return max(ans,1ll);
}

Bob

Compilation message (stderr)

Alice.cpp: In function 'void gen2()':
Alice.cpp:26:48: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
   26 |         for(auto i:Z2)if(cap[i]*!vv[i].count(j)*x)
      |                          ~~~~~~~~~~~~~~~~~~~~~~^~
Alice.cpp: In function 'long long int Bob(std::vector<std::pair<int, int> >)':
Alice.cpp:50:9: warning: unused variable 'tot' [-Wunused-variable]
   50 |     int tot=0;
      |         ^~~
/usr/bin/ld: /tmp/cciaUs34.o: in function `main':
grader_alice.cpp:(.text.startup+0x110): undefined reference to `Alice()'
collect2: error: ld returned 1 exit status

/usr/bin/ld: /tmp/ccnDltPO.o: in function `main':
grader_bob.cpp:(.text.startup+0x324): undefined reference to `Bob(std::vector<std::pair<int, int>, std::allocator<std::pair<int, int> > >)'
collect2: error: ld returned 1 exit status