oj.uz

Submission #251737

# Submission time Handle Problem Language Result Execution time Memory
251737 2020-07-22T09:00:20 Z VEGAnn Uzastopni (COCI15_uzastopni) C++14
72 / 160
 339 ms 18808 KB 
#include <bits/stdc++.h>
//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("-O3")
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("fast-math")
//#pragma GCC optimize("no-stack-protector")
#define sz(x) ((int)x.size())
#define i2 array<int,2>
#define PB push_back
using namespace std;
typedef long long ll;
const int N = 10010;
const int V = 101;
const int C = 22;
const int md = 10007;
vector<int> g[N];
bitset<V> f[N][V], lf[2][V], rt[2][V], clr;
int n, a[N];

void clear(int tp){
    for (int i = 0; i < V; i++){
        lf[tp][i] = clr;
        rt[tp][i] = clr;
    }
}

void dfs(int v, int p){
    int lst = 0;

    for (int u : g[v]){
        if (u == p) continue;

        dfs(u, v);
    }

    clear(0);

    lf[0][a[v]][a[v]] = 1;
    rt[0][a[v]][a[v]] = 1;

    for (int u : g[v]){
        if (u == p) continue;

//        cerr << lf[lst][1][3] << '\n';

        lst ^= 1;

        clear(lst);

        for (int l = 1; l < V; l++)
        for (int r = l; r < V; r++)
            if (f[u][l][r] && !lf[lst ^ 1][l][r]){
                lf[lst][l][r] = 1;

                if (r + 1 < V)
                    lf[lst][l] |= (lf[lst ^ 1][r + 1]);

                rt[lst][r][l] = 1;

                if (l > 1)
                    rt[lst][r] |= (rt[lst ^ 1][l - 1]);
            }

        for (int l = 1; l < V; l++)
        for (int r = l; r < V; r++){
            bool res = bool(lf[lst][l][r] || rt[lst][r][l] || lf[lst ^ 1][l][r] || rt[lst ^ 1][r][l]);

            lf[lst][l][r] = res;
            rt[lst][r][l] = res;
        }
    }

    for (int l = 1; l < V; l++)
    for (int r = l; r < V; r++)
        if (l <= a[v] && r >= a[v])
            f[v][l][r] = lf[lst][l][r];

//    if (v == 1) {
//        cerr << "ADSGDA " << f[v][1][3] << '\n';
//        cerr << "ADSGDA " << f[v][2][3] << '\n';
//        cerr << "ADSGDA " << f[v][3][3] << '\n';
//    }
}

int main() {
#ifdef _LOCAL
    freopen("in.txt","r",stdin); // freopen("output.txt","w",stdout);
#else
//    freopen("mining.in","r",stdin); freopen("mining.out","w",stdout);
    ios_base::sync_with_stdio(0); cin.tie(0);
#endif

    cin >> n;

    for (int i = 0; i < n; i++)
        cin >> a[i];

    for (int i = 1; i < n; i++){
        int x, y; cin >> x >> y;
        x--; y--;

        g[x].PB(y);
        g[y].PB(x);
    }

    dfs(0, -1);

    int ans = 0;

    for (int l = 1; l < V; l++)
    for (int r = l; r < V; r++)
        if (f[0][l][r]) {
//            cerr << l << " " << r << '\n';
            ans++;
        }

    cout << ans;

    return 0;
}

Subtask #1
72.0 / 160.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 640 KB Output isn't correct
2 Correct 3 ms 640 KB Output is correct
3 Incorrect 3 ms 768 KB Output isn't correct
4 Incorrect 5 ms 768 KB Output isn't correct
5 Incorrect 3 ms 768 KB Output isn't correct
6 Correct 4 ms 768 KB Output is correct
7 Correct 4 ms 768 KB Output is correct
8 Correct 6 ms 768 KB Output is correct
9 Correct 4 ms 768 KB Output is correct
10 Correct 4 ms 768 KB Output is correct
11 Incorrect 308 ms 16692 KB Output isn't correct
12 Incorrect 313 ms 16888 KB Output isn't correct
13 Correct 301 ms 16756 KB Output is correct
14 Incorrect 320 ms 18808 KB Output isn't correct
15 Incorrect 316 ms 18680 KB Output isn't correct
16 Incorrect 316 ms 18808 KB Output isn't correct
17 Correct 295 ms 16764 KB Output is correct
18 Correct 303 ms 16760 KB Output is correct
19 Incorrect 323 ms 16760 KB Output isn't correct
20 Incorrect 339 ms 16820 KB Output isn't correct