Submission #1130178

#	Time	Username	Problem	Language	Result	Execution time	Memory
1130178		urosk	Werewolf (IOI18_werewolf)	C++17	0 / 100	541 ms	59596 KiB

werewolf

#include "werewolf.h"
#define here cerr<<"===========================================\n"
#define dbg(x) cerr<<#x<<": "<<x<<endl;
#include <bits/stdc++.h>
#define llinf 100000000000000000LL // 10^17
#define iinf 2000000000 // 2*10^9
#define pb push_back
#define eb emplace_back
#define popb pop_back
#define fi first
#define sc second
#define endl '\n'
#define all(a) a.begin(),a.end()
#define ceri(a,l,r) {cerr<<#a<<": ";for(ll i_ = l;i_<=r;i_++) cerr<<a[i_]<< " ";cerr<<endl;}
#define cer(a) {cerr<<#a<<": ";for(ll x_ : a) cerr<<x_<< " ";cerr<<endl;}
#define si(a) (ll)(a.size())
using namespace std;
using ld = long double;
using ll = long long;
using ull = unsigned long long;
using pii = pair<int,int>;
using pll = pair<ll,ll>;
using pld = pair<ld,ld>;

const ll maxn = 200005;
ll n,m,q;
ll dsu[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) {
    y = root(y),x = root(x);
    if(x>y) swap(x,y);
    dsu[y] = x;
}
vector<ll> g[maxn];
map<pll,ll> mpl;
map<pll,ll> mpr;
vector<ll> ask[maxn];
std::vector<int> check_validity(int N, std::vector<int> X, std::vector<int> Y,
                                std::vector<int> S, std::vector<int> E,
                                std::vector<int> L, std::vector<int> R) {
    n = N;
    m = si(X);
    for(ll i = 0;i<m;i++) {
        ll x = X[i],y = Y[i];
        x++; y++;
        g[x].pb(y);
        g[y].pb(x);
    }
    q = si(S);
    for(ll i = 0;i<q;i++) {
        L[i]++;
        S[i]++;
        ask[L[i]].pb(S[i]);
    }
    iota(dsu+1,dsu+1+n,1);
    for(ll i = n;i>=1;i--) {
        for(ll j : g[i]) {
            if(j>=i) {
                upd(i,j);
            }
        }
        for(ll x : ask[i]) {
            mpl[{i,x}] = root(x);
        }
    }
    for(ll i = 1;i<=n;i++) ask[i].clear();
    for(ll i = 0;i<q;i++) {
        R[i]++;
        E[i]++;
        ask[R[i]].pb(E[i]);
    }
    iota(dsu+1,dsu+1+n,1);
    for(ll i = 1;i<=n;i++) {
        for(ll j : g[i]) {
            if(j<=i) {
                upd(i,j);
            }
        }
        for(ll x : ask[i]) {
            mpr[{i,x}] = root(x);
        }
    }
    vector<int> ans;
    for(ll i = 0;i<q;i++) {
        ll x = mpr[{R[i],E[i]}];
        ll y = mpl[{L[i],S[i]}];
        ll tl = L[i],tr = R[i];
        if(x>=tl&&y>=tl&&x<=tr&&y<=tr) ans.pb(1);
        else ans.pb(0);
    }
    return ans;
}

• Subtask 1: 0 / 7
• Subtask 2: 0 / 8
• Subtask 3: 0 / 34
• Subtask 4: 0 / 51