oj.uz

답안 #897174

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
897174 2024-01-02T16:49:43 Z bLIC Regions (IOI09_regions) C++17
15 / 100
 3336 ms 32416 KB 
/**
 *  Author: Anil Byar
**/

#include <bits/stdc++.h>
// #include <ext/pb_ds/assoc_container.hpp>
// #include <ext/pb_ds/tree_policy.hpp>

// using namespace __gnu_pbds;
using namespace std;

// template<class T>
// using ordered_set = tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;



#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define sz(x) (int)(x).size()
#define uniq(v) v.erase(unique(all(v)), v.end())
#define ft first
#define sd second
#define pb push_back
#define eb emplace_back

// Source: https://codeforces.com/blog/entry/68809
// { start
void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '"' << x << '"';}
void __print(const string &x) {cerr << '"' << x << '"';}
void __print(bool x) {cerr << (x ? "true" : "false");}

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifndef ONLINE_JUDGE
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
#define debug(x...)
#endif
// } end


typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<pii> vii;
typedef vector<ll> vl;
typedef vector<pll> vll;
typedef vector<vi> vvi;
typedef vector<vii> vvii;
typedef vector<vl> vvl;

#define dbg if(0)

const ll MOD = 1e9+7;
const ll MOD9 = 998244353;
const ll INFLL = 1e18+5;
const int INF = 1e9;

void printbit(int x, int len) {string s="\n";while(len--){s=((x%2)?'1':'0')+s;x/=2;} cout<<s;}
ll power(ll x, ll y, ll mod){if (y==0) return 1;ll ret = power(x, y/2, mod);ret *= ret;ret%=mod;if (y&1) ret *= x;return ret%mod;}
ll modinv(ll x, ll mod = MOD) {return power(x, mod-2, mod);}

template<class T> bool chmin(T& a, T b){return (a>b?a=b,1:0);}
template<class T> bool chmax(T& a, T b){return (a<b?a=b,1:0);}
template<class T>
istream& operator>>(istream&in, vector<T>&v){
    for (T& x:v) in>>x;
    return in;
}
template<class T>
ostream& operator<<(ostream&out, vector<T>&v){
    for (T& x:v) out<<x<<' ';
    cout<<'\n';
    return out;
}
// use ?: with brackets (?:)
// check for overflow
// think about dp
// Read the statement carefully


const int N = 2e5+1, R = 25000;
const int B = 450;

vvi adj, emp, tour;
vi reg, idofreg, currcnt, st, en;
vvl cntans;
vector<int> anc;
int timer;

void dfs(int node){
    st[node] = timer++;
    tour[reg[node]].push_back(st[node]);
    int id = idofreg[reg[node]];
    if (id && (currcnt[id]++)==0) anc.push_back(id);
    for (int x:adj[node]){
        for (int y:anc) cntans[y][reg[x]] += currcnt[y];
        dfs(x); 
    }
    if (id && (--currcnt[id])==0) anc.pop_back();
    en[node] = timer++;
}

void solve(){

    timer = 0;
    int n, r, q;cin>>n>>r>>q;
    adj.resize(n);
    emp.resize(r);
    tour.resize(r);
    reg.resize(n);
    idofreg.resize(r);
    currcnt.resize(r);
    st.resize(n);
    en.resize(n);
    {
        int x;cin>>x;
        x--;
        emp[x].push_back(0);
        reg[0] = x;
    }
    for (int i = 1;i<n;i++){
        int p, x;cin>>p>>x;
        x--;p--;
        reg[i] = x;
        emp[x].push_back(i);
        adj[p].push_back(i);
    }
    int rg = 0;
    for (int i = 0;i<r;i++){
        if (sz(emp[i])>=B) idofreg[i] = ++rg;
    }
    cntans.resize(rg+1, vl(r, 0));
    assert(rg<=B);
    dfs(0);
    while(q--){
        int r1, r2;cin>>r1>>r2;
        r1--;
        r2--;
        if (idofreg[r1]) cout<<cntans[idofreg[r1]][r2];
        else {
            ll ans = 0;
            for (int e:emp[r1]){
                ans += lower_bound(all(tour[r2]), en[e]) - upper_bound(all(tour[r2]), st[e]);
            }
            cout<<ans;
        }
        cout<<endl;
    }
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);


#define ONLINE_JUDGE
#ifndef ONLINE_JUDGE
    freopen("input.in", "r", stdin);
    freopen("output.out", "w", stdout);
    freopen("debug.dbg", "w", stderr);
    int tt = clock();
#endif

    int t=1, i = 1;
    // cin>>t;
    while(t--){
        // cout<<"Case #"<<i++<<": ";
        solve();
        cout<<'\n';
    }
#ifndef ONLINE_JUDGE
    cerr << "TIME = " << (float)(clock() - tt)/CLOCKS_PER_SEC << endl;
    tt = clock();
#endif
}

Compilation message

regions.cpp: In function 'int main()':
regions.cpp:182:14: warning: unused variable 'i' [-Wunused-variable]
  182 |     int t=1, i = 1;
      |              ^

Subtask #1
10.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 2 ms 344 KB Output is correct
5 Correct 3 ms 344 KB Output is correct
6 Correct 7 ms 344 KB Output is correct
7 Correct 14 ms 344 KB Output is correct
8 Correct 14 ms 600 KB Output is correct
9 Correct 25 ms 1112 KB Output is correct
10 Runtime error 50 ms 1112 KB Execution killed with signal 13
11 Correct 81 ms 1624 KB Output is correct
12 Runtime error 86 ms 2160 KB Execution killed with signal 13
13 Runtime error 118 ms 1880 KB Execution killed with signal 13
14 Runtime error 178 ms 2648 KB Execution killed with signal 13
15 Runtime error 189 ms 6200 KB Execution killed with signal 13

Subtask #2
5.0 / 85.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1326 ms 7128 KB Execution killed with signal 13
2 Runtime error 1586 ms 5880 KB Execution killed with signal 13
3 Runtime error 2166 ms 9592 KB Execution killed with signal 13
4 Runtime error 178 ms 3156 KB Execution killed with signal 13
5 Runtime error 246 ms 5328 KB Execution killed with signal 13
6 Correct 309 ms 8404 KB Output is correct
7 Runtime error 1107 ms 7872 KB Execution killed with signal 13
8 Runtime error 646 ms 21292 KB Execution killed with signal 13
9 Runtime error 1654 ms 14672 KB Execution killed with signal 13
10 Runtime error 2761 ms 32416 KB Execution killed with signal 13
11 Runtime error 3336 ms 16028 KB Execution killed with signal 13
12 Runtime error 908 ms 16924 KB Execution killed with signal 13
13 Runtime error 1355 ms 17332 KB Execution killed with signal 13
14 Runtime error 1476 ms 20792 KB Execution killed with signal 13
15 Runtime error 2275 ms 23312 KB Execution killed with signal 13
16 Runtime error 2058 ms 30580 KB Execution killed with signal 13
17 Runtime error 1999 ms 31904 KB Execution killed with signal 13