oj.uz

Submission #62419

# Submission time Handle Problem Language Result Execution time Memory
62419 2018-07-28T12:14:40 Z fallingstar Tropical Garden (IOI11_garden) C++11
100 / 100
 4050 ms 119812 KB 
#include "garden.h"
#include "gardenlib.h"
#include <iostream>
#include <vector>
#include <stack>
#include <set>
#include <map>

using namespace std;

typedef pair<int, int> pii;

const int N = 1.5e5 + 2;
const int INF = 1e9 + 1;

int n, m, src;
pii org[2];
vector<int> g[N];
stack<pii> st;
map<pii, int> vst, f[2], r[2];
vector<pair<pii, pii> > a;

void Dfs(int u, int p)
{
    pii pre(p, u);
    pii e(u, g[u].size() > 1 && g[u][0] == p ? g[u][1] : g[u][0]);
    f[0][pre] = f[1][pre] = -1;
    if (vst.find(e) == vst.end())
    {
        vst[e] = 1;
        st.push(e);
        Dfs(e.second, u);
        vst[e] = 2;
	    r[0][pre] = r[0][e];
	    r[1][pre] = r[1][e];

	    if (pre == org[0]) f[0][pre] = 0;
	    else if (f[0][e] != -1) f[0][pre] = f[0][e] + 1;

	    if (pre == org[1]) f[1][pre] = 0;
	    else if (f[1][e] != -1) f[1][pre] = f[1][e] + 1;
    }
    else if (vst[e] == 1)
    {
        for (int i = 0; ;++i)
        {
            auto top = st.top(); st.pop();
            if (top == org[0]) f[0][pre] = i;
            if (top == org[1]) f[1][pre] = i;
            ++r[0][pre];
            ++r[1][pre];
            if (top == e) break;
        }
        if (f[0][pre] == -1) r[0][pre] = -1;
        else f[0][pre] = (r[0][pre] - f[0][pre]) % r[0][pre];

        if (f[1][pre] == -1) r[1][pre] = -1;
        else f[1][pre] = (r[1][pre] - f[1][pre]) % r[1][pre];
    }
    else
    {
        r[0][pre] = r[0][e];
	    r[1][pre] = r[1][e];

	    if (pre == org[0]) f[0][pre] = 0;
	    else if (f[0][e] != -1) f[0][pre] = f[0][e] + 1;

	    if (pre == org[1]) f[1][pre] = 0;
	    else if (f[1][e] != -1) f[1][pre] = f[1][e] + 1;
    }
}

void count_routes(int N, int M, int P, int R[][2], int Q, int G[])
{
    n = N, m = M, src = P;
    for (int i = 0; i < m; ++i)
    {
        int u, v; u = R[i][0], v = R[i][1];
        if (g[u].size() < 2) g[u].push_back(v);
        if (g[v].size() < 2) g[v].push_back(u);
    }

    org[0] = {src, g[src][0]};
    org[1] = {src, g[src].size() > 1 ? g[src][1] : -1};
    for (int u = 0; u < n; ++u)
    {
        while (!st.empty()) st.pop();
        pii e(u, g[u][0]);
        if (vst.find(e) == vst.end()) Dfs(u, -1);
        a.push_back({{f[0][e], r[0][e]}, {f[1][e], r[1][e]}});
        //cerr << f[0][e] << ' ' << r[0][e] << ' ' << f[1][e] << ' ' << r[1][e] << '\n';
    }
    int q = Q;
    for (int i = 0; i < q; ++i)
    {
        int x = G[i], ans = 0;
        for (auto p: a)
        {
            auto satis = [](int x, pii q) -> bool { return q.first != -1 && (x == q.first || (x > q.first && q.second != -1 && (x - q.first) % q.second == 0)); };
            ans += satis(x, p.first) || satis(x, p.second);
        }
        answer(ans);
    }
}

Subtask #1
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 4344 KB Output is correct
2 Correct 8 ms 4444 KB Output is correct
3 Correct 8 ms 4448 KB Output is correct
4 Correct 5 ms 4004 KB Output is correct
5 Correct 6 ms 3892 KB Output is correct
6 Correct 8 ms 4472 KB Output is correct
7 Correct 6 ms 3960 KB Output is correct
8 Correct 9 ms 4472 KB Output is correct
9 Correct 11 ms 4652 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 4344 KB Output is correct
2 Correct 8 ms 4444 KB Output is correct
3 Correct 8 ms 4448 KB Output is correct
4 Correct 5 ms 4004 KB Output is correct
5 Correct 6 ms 3892 KB Output is correct
6 Correct 8 ms 4472 KB Output is correct
7 Correct 6 ms 3960 KB Output is correct
8 Correct 9 ms 4472 KB Output is correct
9 Correct 11 ms 4652 KB Output is correct
10 Correct 5 ms 3932 KB Output is correct
11 Correct 139 ms 19248 KB Output is correct
12 Correct 316 ms 28504 KB Output is correct
13 Correct 539 ms 77156 KB Output is correct
14 Correct 1522 ms 89092 KB Output is correct
15 Correct 1756 ms 90120 KB Output is correct
16 Correct 1053 ms 62796 KB Output is correct
17 Correct 791 ms 53216 KB Output is correct
18 Correct 431 ms 28788 KB Output is correct
19 Correct 1197 ms 88460 KB Output is correct
20 Correct 1311 ms 89748 KB Output is correct
21 Correct 1085 ms 66288 KB Output is correct
22 Correct 909 ms 57804 KB Output is correct
23 Correct 1695 ms 98556 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 4344 KB Output is correct
2 Correct 8 ms 4444 KB Output is correct
3 Correct 8 ms 4448 KB Output is correct
4 Correct 5 ms 4004 KB Output is correct
5 Correct 6 ms 3892 KB Output is correct
6 Correct 8 ms 4472 KB Output is correct
7 Correct 6 ms 3960 KB Output is correct
8 Correct 9 ms 4472 KB Output is correct
9 Correct 11 ms 4652 KB Output is correct
10 Correct 5 ms 3932 KB Output is correct
11 Correct 139 ms 19248 KB Output is correct
12 Correct 316 ms 28504 KB Output is correct
13 Correct 539 ms 77156 KB Output is correct
14 Correct 1522 ms 89092 KB Output is correct
15 Correct 1756 ms 90120 KB Output is correct
16 Correct 1053 ms 62796 KB Output is correct
17 Correct 791 ms 53216 KB Output is correct
18 Correct 431 ms 28788 KB Output is correct
19 Correct 1197 ms 88460 KB Output is correct
20 Correct 1311 ms 89748 KB Output is correct
21 Correct 1085 ms 66288 KB Output is correct
22 Correct 909 ms 57804 KB Output is correct
23 Correct 1695 ms 98556 KB Output is correct
24 Correct 4 ms 3960 KB Output is correct
25 Correct 222 ms 19172 KB Output is correct
26 Correct 421 ms 28432 KB Output is correct
27 Correct 2437 ms 77080 KB Output is correct
28 Correct 2669 ms 89188 KB Output is correct
29 Correct 3707 ms 90200 KB Output is correct
30 Correct 2138 ms 62940 KB Output is correct
31 Correct 2007 ms 53276 KB Output is correct
32 Correct 445 ms 28964 KB Output is correct
33 Correct 2290 ms 89328 KB Output is correct
34 Correct 3164 ms 90616 KB Output is correct
35 Correct 2115 ms 66572 KB Output is correct
36 Correct 2628 ms 58696 KB Output is correct
37 Correct 2446 ms 99668 KB Output is correct
38 Correct 4050 ms 119812 KB Output is correct