Submission #558551

#	Time	Username	Problem	Language	Result	Execution time	Memory
558551		urosk	Game (IOI14_game)	C++14	42 / 100	1082 ms	9388 KiB

game

#include "game.h"
// __builtin_popcount(x)
// __builtin_popcountll(x)
#define here cerr<<"===========================================\n"
#include <bits/stdc++.h>
#define ld double
#define ll long long
#define ull unsigned long long
#define llinf 100000000000000000LL // 10^17
#define iinf 2000000000 // 2*10^9
#define pb push_back
#define popb pop_back
#define fi first
#define sc second
#define endl '\n'
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pld pair<ld,ld>
#define sz(a) int(a.size())
#define all(a) a.begin(),a.end()
#define ceri(a,l,r) {for(ll i_ = l;i_<=r;i_++) cerr<<a[i_]<< " ";cerr<<endl;}
using namespace std;
#define maxn 1505
int n;
ll dsu[maxn];
ll siz[maxn];
ll root(ll x){
    while(x!=dsu[x]){
        dsu[x] = dsu[dsu[x]];
        x = dsu[x];
    }
    return x;
}
void upd(ll x,ll y){
    x = root(x);
    y = root(y);
    if(x==y) return;
    dsu[x] = y;
    siz[y]+=siz[x];
}
ll d[maxn][maxn];
void initialize(int N) {
    n = N;
    for(ll i = 1;i<=n;i++) for(ll j = 1;j<=n;j++) d[i][j] = -1;
    iota(dsu+1,dsu+n+1,1);
    fill(siz,siz+n+1,1);
}
bitset<maxn> pito[maxn];
int hasEdge(int u, int v) {
    u++;
    v++;
    pito[u][v] = 1;
    pito[v][u] = 1;
    ll ru = root(u);
    ll rv = root(v);
    vector<ll> a;
    vector<ll> b;
    for(ll i = 1;i<=n;i++){
        if(root(i)==ru) a.pb(i);
        if(root(i)==rv) b.pb(i);
    }
    ll ima = 1;
    /*
    here;
    cerr<<"upit: "<<u<<" "<<v<<endl;
    for(ll x : a) cerr<<x<< " ";
    cerr<<endl;
    for(ll x : b) cerr<<x<< " ";
    cerr<<endl;
    */
    bitset<maxn> c;
    for(ll x : b) c[x] = 1;
    for(ll x : a){
        if((c&pito[x])!=c) ima = 0;
    }
    d[u][v] = d[v][u] = ima;
    if(ima) upd(u,v);
    //cerr<<"ima: "<<ima<<endl;
    //here;
    return ima;
}
/*
4
0 1
3 0
1 2
0 2
3 1
2 3
4
0 3
1 0
0 2
3 1
1 2
2 3
4
0 3
1 0
0 2
3 1
1 2
2 3
*/

• Subtask 1: 15 / 15
• Subtask 2: 27 / 27
• Subtask 3: 0 / 58