Submission #573218

#	Time	Username	Problem	Language	Result	Execution time	Memory
573218		Sho10	Saveit (IOI10_saveit)	C++17	0 / 100	457 ms	21600 KiB

encoder

#include <bits/stdc++.h> //Andrei Alexandru a.k.a Sho
#include "grader.h"
using ll=long long;
using ld=long double;
int const INF=1000000005;
ll const LINF=1000000000000000005;
ll const mod=6700417;
ld const PI=3.14159265359;
ll const MAX_N=3e5+5;
ld const EPS=0.00000001;
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define endl '\n'
#define sz(a) (int)a.size()
#define CODE_START  ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
vector<ll>g[1005];
ll d[1005],ans[1005][1005];
string calc(ll x){
    string res="";
for(ll i=0;i<30;i++)
{
    if((1ll<<i)&x){
        res+='1';
    }else res+='0';
}
reverse(res.begin(),res.end());
return res;
}
void encode(int n, int h, int m, int *v1, int *v2){
for(ll i=0;i<m;i++)
{
    g[v1[i]].pb(v2[i]);
g[v2[i]].pb(v1[i]);
}
for(ll i=0;i<h;i++)
{
    for(ll j=0;j<=n;j++)
    {
        d[j]=LINF;
    }
    queue<ll>q;
    q.push(i);
    d[i]=0;
    while(!q.empty()){
ll x=q.front();
ans[i][x]=d[x];
q.pop();
for(auto it : g[x]){
    if(d[it]==LINF){
        d[it]=d[x]+1;
        q.push(it);
    }
}
    }
}
for(ll i=0;i<h;i++)
{
    for(ll j=0;j<n;j++)
    {
        string s1=calc(ans[i][j]);
        while(s1.size()<10){
            s1=" "+s1;
        }
        for(auto it : s1){
            encode_bit(it-'0');
        }
    }
}
}

decoder

#include <bits/stdc++.h> //Andrei Alexandru a.k.a Sho
#include "grader.h"
using ll=long long;
using ld=long double;
int const INF=1000000005;
ll const LINF=1000000000000000005;
ll const mod=6700417;
ld const PI=3.14159265359;
ll const MAX_N=3e5+5;
ld const EPS=0.00000001;
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define endl '\n'
#define sz(a) (int)a.size()
#define CODE_START  ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
ll ans[1005][1005];
void decode(int n,int h){
for(ll i=0;i<h;i++)
{
    for(ll j=0;j<n;j++)
    {
        string s="";
for(ll k=0;k<10;k++)
{
    ll x=decode_bit();
    s+=(x+'0');
}
    reverse(s.begin(),s.end());
    ll pw=0;
    ll val=0;
    for(ll k=0;k<s.size();k++)
    {
        if(s[k]=='1'){
            val+=(1ll<<pw);
        }
        pw++;
    }
    hops(i,j,val);
}
}
}

Compilation message (stderr)

decoder.cpp: In function 'void decode(int, int)':
decoder.cpp:36:17: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     for(ll k=0;k<s.size();k++)
      |                ~^~~~~~~~~

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