Submission #1286004

#	Time	Username	Problem	Language	Result	Execution time	Memory
1286004		al95ireyiz	Split the Attractions (IOI19_split)	C++20	18 / 100	56 ms	18476 KiB

split

#pragma GCC optimize("O3", "fast-math", "unroll-loops", "no-stack-protector")
#include <bits/stdc++.h>
using namespace std;
#if !defined(ONLINE_JUDGE) and !defined(EVAL)
#include "template/debug.h"
#else
#define d(x...)
#endif
#define fr first
#define er erase
#define in insert
#define sc second
#define ll long long
#define pb push_back
#define vll vector<ll>
#define pll pair<ll,ll>
#define len(x) (ll) x.size()
#define all(x) x.begin(),x.end()
const ll INF = 1e9, INFL = 1e18;
const ll MOD = 1e9 + 7;
// const ll MOD = 998244353;
const ll maxn = 2e5 + 5;

ll n, m, k = 0;

vll g[maxn];
ll vis[maxn], ok = 1;
vll eu;
void dfs(ll u){
    vis[u] = 1;
    eu.pb(u);
    for(auto v : g[u]){
        if(!vis[v]) dfs(v);
    }
}
pair<vll, vll> f(ll x, ll y){
    if(x > y) swap(x, y);
    // 11 balliq subtask: a = 1

    // dfs atib en axrinci catdigim edge-i colorlayib qalanlarindan da colorlamaga calismaq olar
    dfs(1);
    vll a, b;
    ll ind = len(eu) - 1;
    while(len(a) < x) a.pb(eu[ind]), ind --;
    while(len(b) < y) b.pb(eu[ind]), ind --;
    return {a, b};
}
vector<int> find_split(int _n, int _a, int _b, int _c, vector<int> p, vector<int> q){
    n = _n;
    for(ll i = 0; i <= n; i ++) g[i].clear(), vis[i] = 0;
    for(ll i = 0; i < len(p); i ++){
        g[p[i]].pb(q[i]);
        g[q[i]].pb(p[i]);
    }
    vector<int>cv(n);
    if(_a <= _c and _b <= _c){
        auto [av, bv] = f(_a, _b);
        if(!ok) return cv;
        if(_a > _b) swap(av, bv);
        for(ll i = 0; i < n; i ++) cv[i] = 3;
        for(auto i : av) cv[i] = 1;
        for(auto i : bv) cv[i] = 2;
        return cv;
    }
    if(_a <= _b and _c <= _b){
        auto [av, _cv] = f(_a, _c);
        if(!ok) return cv;
        if(_a > _c) swap(av, _cv);
        for(ll i = 0; i < n; i ++) cv[i] = 2;
        for(auto i : av) cv[i] = 1;
        for(auto i : _cv) cv[i] = 3;
        return cv;
    }
    if(_b <= _a and _c <= _a){
        auto [bv, _cv] = f(_b, _c);
        if(!ok) return cv;
        if(_b > _c) swap(bv, _cv);
        for(ll i = 0; i < n; i ++) cv[i] = 1;
        for(auto i : bv) cv[i] = 2;
        for(auto i : _cv) cv[i] = 3;
        return cv;
    }
    return cv;
}

// void _() {

// }
// signed main() {
//     ll tm = clock();
//     cin.tie(0)->sync_with_stdio(0);
//     ll t = 1;
//     // cin >> t;
//     for(ll tt = 1; tt <= t; tt ++) _();
//     cerr << "\n\033[1;31mTime: \033[1;30m" \
//, vis[i  = 0        << (double)(clock()-tm)/1000000 << "\033[1;32m seconds\n";
// }

• Subtask 1: 7 / 7
• Subtask 2: 11 / 11
• Subtask 3: 0 / 22
• Subtask 4: 0 / 24
• Subtask 5: 0 / 36