oj.uz

Submission #1076427

# Submission time Handle Problem Language Result Execution time Memory
1076427 2024-08-26T13:45:50 Z ArthuroWich Tropical Garden (IOI11_garden) C++17
100 / 100
 1250 ms 76048 KB 
#include "garden.h"
#include "gardenlib.h"
#include<bits/stdc++.h>
using namespace std;
int n, m, p, ans = 0;
vector<int> adj[150005], radj[300005];
int succ[300005][31], vis1[300005], vis2[300005], dep1[300005], dep2[300005], cyc1 = -1, cyc2 = -1;
void initsucc() {
    for (int j = 1; j < 31; j++) {
        for (int i = 0; i <= 2*n; i++) {
            succ[i][j] = succ[succ[i][j-1]][j-1];
        }
    }
}
void calc(int a, int k) {
    for (int i = 0; i < 31; i++) {
        if (k & (1 << i)) {
            a = succ[a][i];
        }
    }
    if (a == p || a == p+n) {
        ans++;
    }
}
void dfs1(int i, int st, int d) {
    if (vis1[i] && st == i && cyc1 == -1) {
        cyc1 = d;
        return;
    }
    if (vis1[i]) {
        return;
    }
    vis1[i] = 1;
    dep1[i] = d;
    for (int j : radj[i]) {
        dfs1(j, st, d+1);
    }
}
void dfs2(int i, int st, int d) {
    if (vis2[i] && st == i && cyc2 == -1) {
        cyc2 = d;
        return;
    }
    if (vis2[i]) {
        return;
    }
    vis2[i] = 1;
    dep2[i] = d;
    for (int j : radj[i]) {
        dfs2(j, st, d+1);
    }
}
void count_routes(int N, int M, int P, int R[][2], int Q, int G[]) {
    n = N, m = M, p = P;
    for (int i = 0; i < m; i++) {
        if (adj[R[i][0]].size() < 2) {
            adj[R[i][0]].push_back(R[i][1]);
        }
        if (adj[R[i][1]].size() < 2) {
            adj[R[i][1]].push_back(R[i][0]);
        }
    }
    for (int i = 0; i < n; i++) {
        if (adj[i].size() == 1) {
            if (i == adj[adj[i][0]][0]) {
                succ[i][0] = adj[i][0]+n;
            } else {
                succ[i][0] = adj[i][0];
            }
            succ[i+n][0] = succ[i][0];
        } else {
            if (i == adj[adj[i][0]][0]) {
                succ[i][0] = adj[i][0]+n;
            } else {
                succ[i][0] = adj[i][0];
            }
            if (i == adj[adj[i][1]][0]) {
                succ[i+n][0] = adj[i][1]+n;
            } else {
                succ[i+n][0] = adj[i][1];
            }
        }
    }
    if (Q == 1) {
        initsucc();
        ans = 0;
        for (int i = 0; i < n; i++) {
            calc(i, G[0]);
        }
        answer(ans);
        return;
    } 
    for (int i = 0; i < 2*n; i++) {
        radj[succ[i][0]].push_back(i);
    }
    dfs1(p, p, 0);
    dfs2(p+n, p+n, 0);
    for (int j = 0; j < Q; j++) {
        ans = 0;
        for (int i = 0; i < n; i++) {
            bool f1 = 0, f2 = 0;
            int k = G[j];
            if (vis1[i]) {
                k -= dep1[i];
                if (k == 0) {
                    f1 = 1;
                } else if (cyc1 != -1 && k % cyc1 == 0) {
                    f1 = 1;
                }
            }
            k = G[j];
            if (vis2[i]) {
                k -= dep2[i];
                if (k == 0) {
                    f2 = 1;
                } else if (cyc2 != -1 && k % cyc2 == 0) {
                    f2 = 1;
                }
            }
            if (f1 || f2) {
                ans++;
            }
        }
        answer(ans);
    }
}

Subtask #1
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 11096 KB Output is correct
2 Correct 5 ms 11100 KB Output is correct
3 Correct 6 ms 11236 KB Output is correct
4 Correct 5 ms 10844 KB Output is correct
5 Correct 5 ms 10844 KB Output is correct
6 Correct 6 ms 11100 KB Output is correct
7 Correct 4 ms 10844 KB Output is correct
8 Correct 5 ms 11100 KB Output is correct
9 Correct 5 ms 11276 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 11096 KB Output is correct
2 Correct 5 ms 11100 KB Output is correct
3 Correct 6 ms 11236 KB Output is correct
4 Correct 5 ms 10844 KB Output is correct
5 Correct 5 ms 10844 KB Output is correct
6 Correct 6 ms 11100 KB Output is correct
7 Correct 4 ms 10844 KB Output is correct
8 Correct 5 ms 11100 KB Output is correct
9 Correct 5 ms 11276 KB Output is correct
10 Correct 5 ms 10840 KB Output is correct
11 Correct 16 ms 17500 KB Output is correct
12 Correct 28 ms 22292 KB Output is correct
13 Correct 48 ms 35920 KB Output is correct
14 Correct 93 ms 50768 KB Output is correct
15 Correct 90 ms 51280 KB Output is correct
16 Correct 69 ms 38480 KB Output is correct
17 Correct 53 ms 34384 KB Output is correct
18 Correct 27 ms 22104 KB Output is correct
19 Correct 102 ms 50772 KB Output is correct
20 Correct 96 ms 51280 KB Output is correct
21 Correct 67 ms 38480 KB Output is correct
22 Correct 57 ms 34396 KB Output is correct
23 Correct 111 ms 54864 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 11096 KB Output is correct
2 Correct 5 ms 11100 KB Output is correct
3 Correct 6 ms 11236 KB Output is correct
4 Correct 5 ms 10844 KB Output is correct
5 Correct 5 ms 10844 KB Output is correct
6 Correct 6 ms 11100 KB Output is correct
7 Correct 4 ms 10844 KB Output is correct
8 Correct 5 ms 11100 KB Output is correct
9 Correct 5 ms 11276 KB Output is correct
10 Correct 5 ms 10840 KB Output is correct
11 Correct 16 ms 17500 KB Output is correct
12 Correct 28 ms 22292 KB Output is correct
13 Correct 48 ms 35920 KB Output is correct
14 Correct 93 ms 50768 KB Output is correct
15 Correct 90 ms 51280 KB Output is correct
16 Correct 69 ms 38480 KB Output is correct
17 Correct 53 ms 34384 KB Output is correct
18 Correct 27 ms 22104 KB Output is correct
19 Correct 102 ms 50772 KB Output is correct
20 Correct 96 ms 51280 KB Output is correct
21 Correct 67 ms 38480 KB Output is correct
22 Correct 57 ms 34396 KB Output is correct
23 Correct 111 ms 54864 KB Output is correct
24 Correct 5 ms 11100 KB Output is correct
25 Correct 48 ms 18864 KB Output is correct
26 Correct 83 ms 24156 KB Output is correct
27 Correct 710 ms 52032 KB Output is correct
28 Correct 658 ms 59600 KB Output is correct
29 Correct 799 ms 60272 KB Output is correct
30 Correct 421 ms 43888 KB Output is correct
31 Correct 460 ms 39896 KB Output is correct
32 Correct 94 ms 24256 KB Output is correct
33 Correct 657 ms 59052 KB Output is correct
34 Correct 801 ms 60500 KB Output is correct
35 Correct 435 ms 43948 KB Output is correct
36 Correct 832 ms 39764 KB Output is correct
37 Correct 437 ms 62524 KB Output is correct
38 Correct 1250 ms 76048 KB Output is correct