Submission #565156

#	Time	Username	Problem	Language	Result	Execution time	Memory
565156		MrDeboo	Saveit (IOI10_saveit)	C++17	0 / 100	277 ms	14656 KiB

encoder

#include "grader.h"
#include "encoder.h"
#include <bits/stdc++.h>
using namespace std;
void encode(int n, int h, int p, int v1[], int v2[]){
    vector<int>vct[n];
    for(int i=0;i<p;i++){
        vct[v1[i]].push_back(v2[i]);
        vct[v2[i]].push_back(v1[i]);
    }
    priority_queue<pair<int,pair<int,int>>>pq;
    map<pair<int,int>,bool>mp;
    for(int i=0;i<h;i++){
        deque<pair<int,int>>dq={{0,i}};
        vector<bool>vis(n);
        vis[i]=1;
        while(dq.size()){
            pair<int,int>p=dq.front();
            dq.pop_front();
            for(auto &w:vct[p.second]){
                if(vis[w])continue;
                vis[w]=1;
                if(!mp[{min(w,p.second),max(w,p.second)}]){
                    pq.push({-p.first,{min(w,p.second),max(w,p.second)}});
                    mp[{min(w,p.second),max(w,p.second)}]=1;
                }
                dq.push_back({p.first+1,w});
            }
        }
    }
    for(int i=0;i<h;i++){
        int k=rand()%n;
        deque<pair<int,int>>dq={{0,k}};
        vector<bool>vis(n);
        while(dq.size()){
            pair<int,int>p=dq.front();
            dq.pop_front();
            for(auto &w:vct[p.second]){
                if(vis[w])continue;
                vis[w]=1;
                if(!mp[{min(w,p.second),max(w,p.second)}]){
                    pq.push({-p.first,{min(w,p.second),max(w,p.second)}});
                    mp[{min(w,p.second),max(w,p.second)}]=1;
                }
                dq.push_back({p.first+1,w});
            }
        }
    }
    int tot=360000/20;
    while(tot--){
        pair<int,int>pr;
        if(pq.empty())pr={0,0};
        else{
            pr=pq.top().second;
            pq.pop();
        }
        for(int i=0;i<10;i++)encode_bit((!!(pr.first&(1<<i))));
        for(int i=0;i<10;i++)encode_bit((!!(pr.second&(1<<i))));
    }
}

decoder

#include "grader.h"
#include "decoder.h"
#include <bits/stdc++.h>
using namespace std;
void decode(int n, int h) {
    vector<int>vct[n];
    for(int i=0;i<360000/20;i++){
        int a=0,b=0;
        for(int w=0;w<10;w++)a+=(1<<w)*decode_bit();
        for(int w=0;w<10;w++)b+=(1<<w)*decode_bit();
        vct[a].push_back(b);
        vct[b].push_back(a);
    }
    for(int i=0;i<h;i++){
        deque<pair<int,int>>dq={{0,i}};
        vector<bool>vis(n);
        vis[i]=1;
        while(dq.size()){
            pair<int,int>p=dq.front();
            dq.pop_front();
            hops(i,p.second,p.first);
            for(auto &w:vct[p.second]){if(!vis[w]){dq.push_back({p.first+1,w});vis[w]=1;}}
        }
    }
}

• Subtask 1: 0 / 25
• Subtask 2: 0 / 25
• Subtask 3: 0 / 25
• Subtask 4: 0 / 25