oj.uz

Submission #251836

# Submission time Handle Problem Language Result Execution time Memory
251836 2020-07-22T10:56:43 Z VEGAnn Uzastopni (COCI15_uzastopni) C++14
80 / 160
 422 ms 18296 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[3][V], clr;
int n, a[N];

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

    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] && (l < a[v] || r > a[v])){
                lf[lst][l][r] = 1;

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

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

        clear(2);

        for (int r = 2; r < V; r++)
        for (int l = r - 1; l > 0; l--) {
            if (lf[lst][l][r - 1])
                lf[2][l] |= lf[lst ^ 1][r];

            if (lf[lst ^ 1][l][r])
                lf[2][l] |= lf[lst][r];
            //right too
        }

        for (int l = 1; l < V; l++)
        for (int r = l; r < V; r++){
            bool res = bool(lf[2][l][r] || lf[lst ^ 1][l][r] || lf[lst][l][r]);

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

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

//    if (v == 2) {
//        cerr << "ADSGDA " << f[v][3][4] << '\n';
//        cerr << "ADSGDA " << f[v][3][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
80.0 / 160.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 640 KB Output is correct
2 Correct 3 ms 640 KB Output is correct
3 Incorrect 4 ms 640 KB Output isn't correct
4 Incorrect 4 ms 640 KB Output isn't correct
5 Incorrect 4 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 4 ms 768 KB Output is correct
9 Correct 5 ms 768 KB Output is correct
10 Correct 4 ms 768 KB Output is correct
11 Incorrect 377 ms 16968 KB Output isn't correct
12 Incorrect 353 ms 16760 KB Output isn't correct
13 Correct 366 ms 16888 KB Output is correct
14 Incorrect 396 ms 18172 KB Output isn't correct
15 Incorrect 407 ms 18296 KB Output isn't correct
16 Incorrect 416 ms 18296 KB Output isn't correct
17 Correct 376 ms 16788 KB Output is correct
18 Correct 372 ms 16860 KB Output is correct
19 Incorrect 422 ms 16852 KB Output isn't correct
20 Incorrect 422 ms 16876 KB Output isn't correct