oj.uz

Submission #651764

# Submission time Handle Problem Language Result Execution time Memory
651764 2022-10-20T01:42:56 Z ghostwriter Tropical Garden (IOI11_garden) C++14
69 / 100
 5000 ms 19276 KB 
#pragma GCC optimize ("Ofast")
#pragma GCC target ("avx2")
#include "garden.h"
#include "gardenlib.h"
#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include <debug.h>
#include "grader.cpp"
#else
#define debug(...)
#endif
#define ft front
#define bk back
#define st first
#define nd second
#define ins insert
#define ers erase
#define pb push_back
#define pf push_front
#define _pb pop_back
#define _pf pop_front
#define lb lower_bound
#define ub upper_bound
#define mtp make_tuple
#define bg begin
#define ed end
#define all(x) x.bg(), x.ed()
#define sz(x) (int)x.size()
typedef long long ll; typedef unsigned long long ull;
typedef double db; typedef long double ldb;
typedef pair<int, int> pi; typedef pair<ll, ll> pll;
typedef vector<int> vi; typedef vector<ll> vll; typedef vector<pi> vpi; typedef vector<pll> vpll;
typedef string str;
template<typename T> T gcd(T a, T b) { return (b == 0? a : gcd(b, a % b)); }
template<typename T> T lcm(T a, T b) { return a / gcd(a, b) * b; }
#define FOR(i, l, r) for (int i = l; i <= r; ++i)
#define FOS(i, r, l) for (int i = r; i >= l; --i)
#define FRN(i, n) for (int i = 0; i < n; ++i)
#define FSN(i, n) for (int i = n - 1; i >= 0; --i)
#define EACH(i, x) for (auto &i : x)
#define WHILE while
#define file "TEST"
mt19937 rd(chrono::steady_clock::now().time_since_epoch().count());
ll rand(ll l, ll r) { return uniform_int_distribution<ll>(l, r)(rd); }
/*
----------------------------------------------------------------
    END OF TEMPLATE
----------------------------------------------------------------
    Tran The Bao - ghostwriter
    Training for VOI23 gold medal
----------------------------------------------------------------
    GOAT
----------------------------------------------------------------
*/
const int MAXN = 15e4;
int ind[MAXN][2], c[MAXN][2], c1[MAXN][2], s[MAXN][2], d[MAXN][2];
vi adj[MAXN];
vpi e;
pi nxt(pi x) {
    int u = x.st;
    bool stt = x.nd;
    int id = (!stt? 0 : sz(adj[u]) == 1? 0 : 1);
    int nxtv = e[adj[u][id]].st == u? e[adj[u][id]].nd : e[adj[u][id]].st;
    return {nxtv, adj[u][id] == adj[nxtv][0]? 1 : 0};
}
int cal(int &N, int &P, int &x) {
    memset(c, 0, sizeof c);
    int ans = 0;
    FRN(i, N)
    FRN(j, 2) {
        if (ind[i][j]) continue;
        int x1 = x;
        if (x1 > d[i][j]) {
            x1 -= d[i][j];
            x1 %= s[i][j];
            x1 += d[i][j];
        }
        pi cur = {i, j};
        FOR(z, 1, x1) cur = nxt(cur);
        if (!j && cur.st == P) ++ans;
        c[i][j] = 1;
        pi cur1 = nxt({i, j});
        WHILE(!c[cur1.st][cur1.nd]) {
            cur = nxt(cur);
            if (!cur1.nd && cur.st == P) ++ans;
            c[cur1.st][cur1.nd] = 1;
            cur1 = nxt(cur1);
        }
    }
    FRN(i, N)
    FRN(j, 2) {
        if (c[i][j]) continue;
        int x1 = x % s[i][j];
        pi cur = {i, j};
        FOR(z, 1, x1) cur = nxt(cur);
        if (!j && cur.st == P) ++ans;
        c[i][j] = 1;
        pi cur1 = nxt({i, j});
        WHILE(!c[cur1.st][cur1.nd]) {
            cur = nxt(cur);
            if (!cur1.nd && cur.st == P) ++ans;
            c[cur1.st][cur1.nd] = 1;
            cur1 = nxt(cur1);
        }   
    }
    return ans;
}
void count_routes(int N, int M, int P, int R[][2], int Q, int G[]) {
    e.resize(M);
    e.clear();
    FRN(i, N) {
        adj[i].resize(2);
        adj[i].clear();
    }
    FRN(i, M) {
        int u = R[i][0], v = R[i][1];
        e.pb({u, v});
        if (sz(adj[u]) < 2) adj[u].pb(i);
        if (sz(adj[v]) < 2) adj[v].pb(i);
    }
    vpi ver;
    ver.resize(2 * N);
    ver.clear();
    FRN(i, N)
    FRN(j, 2) {
        pi tmp1 = nxt({i, j});
        ind[tmp1.st][tmp1.nd] = 1;
        if (c1[i][j]) continue;
        pi cur = {i, j};
        ver.clear();
        WHILE(1) {
            if (!c[cur.st][cur.nd]) ver.pb(cur);
            ++c[cur.st][cur.nd];
            cur = nxt(cur);
            if (c1[cur.st][cur.nd] || c[cur.st][cur.nd] == 2) break;
        }
        reverse(all(ver));
        if (c[ver.ft().st][ver.ft().nd] == 2) {
            int cnt = 0, h = 0;
            EACH(z, ver) if (c[z.st][z.nd] == 2) ++cnt;
            EACH(z, ver) {
                if (c[z.st][z.nd] == 1) ++h;
                s[z.st][z.nd] = cnt;
                d[z.st][z.nd] = h;
            }
        }
        else {
            pi tmp = nxt(ver.ft());
            int cnt = s[tmp.st][tmp.nd], h = d[tmp.st][tmp.nd];
            EACH(z, ver) {
                ++h;
                s[z.st][z.nd] = cnt;
                d[z.st][z.nd] = h;
            }
        }
        EACH(z, ver) c1[z.st][z.nd] = 1;
    }
    FRN(q, Q) answer(cal(N, P, G[q]));
}
/*
5 5 2
1 0
1 2
3 2
1 3
4 2
2
3 1
1 2

0 0 1 1
0 1 1 1
1 0 0 1
1 1 2 1
2 0 1 0
2 1 3 1
3 0 2 0
3 1 1 0
4 0 2 0
4 1 2 0
----------------------------------------------------------------
From Benq:
    stuff you should look for
        * int overflow, array bounds
        * special cases (n=1?)
        * do smth instead of nothing and stay organized
        * WRITE STUFF DOWN
        * DON'T GET STUCK ON ONE APPROACH
----------------------------------------------------------------
*/

Subtask #1
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5076 KB Output is correct
2 Correct 3 ms 5076 KB Output is correct
3 Correct 4 ms 5076 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 5076 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 4 ms 5076 KB Output is correct
9 Correct 4 ms 5204 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5076 KB Output is correct
2 Correct 3 ms 5076 KB Output is correct
3 Correct 4 ms 5076 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 5076 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 4 ms 5076 KB Output is correct
9 Correct 4 ms 5204 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 290 ms 7152 KB Output is correct
12 Correct 366 ms 8788 KB Output is correct
13 Correct 38 ms 12900 KB Output is correct
14 Correct 192 ms 17708 KB Output is correct
15 Correct 178 ms 17968 KB Output is correct
16 Correct 1590 ms 14316 KB Output is correct
17 Correct 95 ms 13132 KB Output is correct
18 Correct 93 ms 8912 KB Output is correct
19 Correct 184 ms 17808 KB Output is correct
20 Correct 167 ms 17996 KB Output is correct
21 Correct 632 ms 14376 KB Output is correct
22 Correct 133 ms 13092 KB Output is correct
23 Correct 628 ms 19276 KB Output is correct

Subtask #3
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5076 KB Output is correct
2 Correct 3 ms 5076 KB Output is correct
3 Correct 4 ms 5076 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 5076 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 4 ms 5076 KB Output is correct
9 Correct 4 ms 5204 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 290 ms 7152 KB Output is correct
12 Correct 366 ms 8788 KB Output is correct
13 Correct 38 ms 12900 KB Output is correct
14 Correct 192 ms 17708 KB Output is correct
15 Correct 178 ms 17968 KB Output is correct
16 Correct 1590 ms 14316 KB Output is correct
17 Correct 95 ms 13132 KB Output is correct
18 Correct 93 ms 8912 KB Output is correct
19 Correct 184 ms 17808 KB Output is correct
20 Correct 167 ms 17996 KB Output is correct
21 Correct 632 ms 14376 KB Output is correct
22 Correct 133 ms 13092 KB Output is correct
23 Correct 628 ms 19276 KB Output is correct
24 Correct 70 ms 5040 KB Output is correct
25 Execution timed out 5060 ms 7124 KB Time limit exceeded
26 Halted 0 ms 0 KB -