oj.uz

답안 #251762

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
251762 2020-07-22T09:35:25 Z VEGAnn Uzastopni (COCI15_uzastopni) C++14
16 / 160
 366 ms 18040 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] && !lf[lst ^ 1][l][r]){
                lf[lst][l][r] = 1;

                if (r + 1 < V)
                    lf[lst][l] |= (lf[lst ^ 1][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 == 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
16.0 / 160.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 640 KB Output isn't correct
2 Incorrect 3 ms 640 KB Output isn't correct
3 Incorrect 3 ms 640 KB Output isn't correct
4 Incorrect 3 ms 640 KB Output isn't correct
5 Incorrect 4 ms 768 KB Output isn't correct
6 Incorrect 4 ms 768 KB Output isn't correct
7 Incorrect 4 ms 768 KB Output isn't correct
8 Incorrect 4 ms 768 KB Output isn't correct
9 Incorrect 4 ms 768 KB Output isn't correct
10 Incorrect 4 ms 768 KB Output isn't correct
11 Incorrect 333 ms 16760 KB Output isn't correct
12 Incorrect 336 ms 16760 KB Output isn't correct
13 Correct 322 ms 16776 KB Output is correct
14 Incorrect 362 ms 18040 KB Output isn't correct
15 Incorrect 348 ms 18040 KB Output isn't correct
16 Incorrect 362 ms 18040 KB Output isn't correct
17 Correct 333 ms 16856 KB Output is correct
18 Incorrect 344 ms 16760 KB Output isn't correct
19 Incorrect 357 ms 16760 KB Output isn't correct
20 Incorrect 366 ms 16888 KB Output isn't correct