oj.uz

Submission #310064

# Submission time Handle Problem Language Result Execution time Memory
310064 2020-10-05T12:40:29 Z soroush File Paths (BOI15_fil) C++14
100 / 100
 305 ms 62196 KB 
/*
#pragma GCC optimize("O2")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("avx,avx2,sse,sse2,fma,tune=native")
//*/
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair<int  ,int > pii;

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const ll maxn  = 2e6+1000;
const ll mod =1e9+7;
const ld PI = acos((ld)-1);

#define int ll
#define pb push_back
#define endl '\n'
#define dokme(x) cout << x , exit(0);
#define migmig ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define ms(x , y) memset(x , y , sizeof x);
#define file_init freopen("input.txt", "r+", stdin); freopen("output.txt", "w+", stdout);
ll pw(ll a, ll b, ll md = mod){ll res = 1;while(b){if(b&1){res=(a*res)%md;}a=(a*a)%md;b>>=1;}return(res);}

int n , m , k;
int ans[maxn];
int s;
int dist[maxn];
vector < int > adj[maxn] , pval;
int cnt[maxn];
int cont[maxn];

void dfs2(int v,int val, bool f = 0){
    if(v > n)return;
    cont[dist[v] + val] += ((f) ? -1 : 1);
    for(auto u : adj[v])
        dfs2(u ,val ,f);
}

void dfs(int v = 0){
    if(v <= n){
        pval.pb(dist[v]);
        dfs2(v , s - dist[v]);
        for(auto u : adj[v])
            dfs(u);
        dfs2(v , s - dist[v] ,  1);
        pval.pop_back();
        return;
    }
    for(auto x : pval)
        if(k - (dist[v] - x) - s >= 0 and cnt[k - (dist[v] - x) - s ])
            ans[v - n] = 1;
    int rmn = k - dist[v];
    if(rmn <= 0)
        return;
    for(int i = 1 ; i * i <= rmn ; i ++){
        if(rmn%i == 0 and cont[i] ){
            ans[v - n] = 1;
            return;
        }
        if(rmn%(rmn/ i) == 0 and cont[rmn / i]){
            ans[v - n] = 1;
            return;
        }
    }
}

int32_t main(){
    migmig
    cin >> n >> m >> k;
    cin >> s;
    s++;
    dist[0] = 1;
    for(int i = 1 ; i <= n ; i ++){
        int p;
        cin >> p >> dist[i];
        dist[i] ++ ;
        dist[i] += dist[p];
        adj[p].pb(i);
    }
    for(int i = 0 ; i <= n ; i ++) cnt[dist[i]] ++;
    for(int i = n+1; i <= n + m ; i ++){
        int p;
        cin >> p >> dist[i];
        dist[i] += dist[p];
        if(dist[i] == k) ans[i - n] = 1;
        else adj[p].pb(i);
    }
    dfs();
    for(int i = 1 ; i <= m ; i ++)
        cout << ((ans[i])?"YES" : "NO") << endl;
    return(0);
}

Subtask #1
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 47360 KB Output is correct
2 Correct 32 ms 47480 KB Output is correct
3 Correct 34 ms 48768 KB Output is correct
4 Correct 35 ms 48888 KB Output is correct
5 Correct 41 ms 55928 KB Output is correct
6 Correct 39 ms 51896 KB Output is correct
7 Correct 46 ms 57208 KB Output is correct
8 Correct 37 ms 53888 KB Output is correct
9 Correct 38 ms 54016 KB Output is correct
10 Correct 31 ms 47360 KB Output is correct
11 Correct 33 ms 47360 KB Output is correct
12 Correct 37 ms 48512 KB Output is correct

Subtask #2
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 50 ms 59512 KB Output is correct
2 Correct 51 ms 59656 KB Output is correct
3 Correct 51 ms 59384 KB Output is correct
4 Correct 52 ms 59768 KB Output is correct
5 Correct 296 ms 61944 KB Output is correct
6 Correct 297 ms 61908 KB Output is correct
7 Correct 174 ms 59640 KB Output is correct
8 Correct 173 ms 59640 KB Output is correct
9 Correct 55 ms 59516 KB Output is correct
10 Correct 51 ms 59000 KB Output is correct
11 Correct 38 ms 47744 KB Output is correct
12 Correct 197 ms 53004 KB Output is correct

Subtask #3
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 47360 KB Output is correct
2 Correct 32 ms 47480 KB Output is correct
3 Correct 34 ms 48768 KB Output is correct
4 Correct 35 ms 48888 KB Output is correct
5 Correct 41 ms 55928 KB Output is correct
6 Correct 39 ms 51896 KB Output is correct
7 Correct 46 ms 57208 KB Output is correct
8 Correct 37 ms 53888 KB Output is correct
9 Correct 38 ms 54016 KB Output is correct
10 Correct 31 ms 47360 KB Output is correct
11 Correct 33 ms 47360 KB Output is correct
12 Correct 37 ms 48512 KB Output is correct
13 Correct 50 ms 59512 KB Output is correct
14 Correct 51 ms 59656 KB Output is correct
15 Correct 51 ms 59384 KB Output is correct
16 Correct 52 ms 59768 KB Output is correct
17 Correct 296 ms 61944 KB Output is correct
18 Correct 297 ms 61908 KB Output is correct
19 Correct 174 ms 59640 KB Output is correct
20 Correct 173 ms 59640 KB Output is correct
21 Correct 55 ms 59516 KB Output is correct
22 Correct 51 ms 59000 KB Output is correct
23 Correct 38 ms 47744 KB Output is correct
24 Correct 197 ms 53004 KB Output is correct
25 Correct 48 ms 59748 KB Output is correct
26 Correct 48 ms 59384 KB Output is correct
27 Correct 50 ms 59392 KB Output is correct
28 Correct 48 ms 59384 KB Output is correct
29 Correct 283 ms 62196 KB Output is correct
30 Correct 305 ms 62084 KB Output is correct
31 Correct 175 ms 59512 KB Output is correct
32 Correct 185 ms 59640 KB Output is correct
33 Correct 50 ms 59384 KB Output is correct
34 Correct 47 ms 59048 KB Output is correct
35 Correct 38 ms 47616 KB Output is correct
36 Correct 235 ms 50296 KB Output is correct