oj.uz

Submission #639743

# Submission time Handle Problem Language Result Execution time Memory
639743 2022-09-11T12:45:01 Z Hacv16 Tropical Garden (IOI11_garden) C++17
49 / 100
 154 ms 50656 KB 
#include<bits/stdc++.h>
#include "garden.h"
#include "gardenlib.h"
using namespace std;
 
typedef long long ll;
typedef pair<int, int> pii;
 
const int MAX = 2e5 + 15;
const int INF = 0x3f3f3f3f;
const int MOD = 1e9 + 7;
 
#define pb push_back
#define sz(x) (int) x.size()
#define fr first
#define sc second
#define mp make_pair
#define all(x) x.begin(), x.end()
#define dbg(x) cerr << #x << ": " << "[ " << x << " ]\n"
 
int dist[MAX][2], cyc[2];
bool seen[MAX];
vector<int> adj[MAX], rev[MAX];
 
void dfs(int u, int end, int d, int aux){
    if(seen[u]) return;
 
    dist[u][aux] = d;
    seen[u] = true;
 
    for(auto v : rev[u]){
        if(v == end){
            cyc[aux] = dist[u][aux] + 1;
            continue;
        } 
 
        dfs(v, end, d + 1, aux);
    }
}
 
void count_routes(int n, int m, int p, int r[][2], int q, int qrs[]) {
    for(int i = 0; i < m; i++){
        int u = r[i][0], v = r[i][1];
        if(sz(adj[u]) < 2) adj[u].pb(v); //only 2 edges matter
        if(sz(adj[v]) < 2) adj[v].pb(u);
    }
 
    vector<int> pai(2 * n, -1); //functional graph
 
    for(int i = 0; i < n; i++){
        for(int j = 0; j < min(2, sz(adj[i])); j++){
            int v = adj[i][j];
            int cur = (adj[v][0] == i) * n + v;
            pai[j * n + i] = cur;
        }
    }
 
    for(int i = n; i < 2 * n; i++)
        if(pai[i] == -1) pai[i] = pai[i - n];
 
    for(int i = 0; i < 2 * n; i++)
        rev[pai[i]].pb(i); 
    
    memset(dist, -1, sizeof(dist));
    
    cyc[0] = cyc[1] = INF;

    dfs(p, p, 0, 0);
    memset(seen, false, sizeof(seen));
    dfs(p + n, p + n, 0, 1);
 
    vector<vector<int>> fdist(2, vector<int>(2 * MAX));
 
    for(int i = 0; i < 2; i++){
        for(int j = 0; j < n; j++){
            if(dist[j][i] == -1) continue;
            fdist[i][dist[j][i]]++;
        }
    }

    for(int i = 0; i < q; i++){
        int k = qrs[i], ans = 0;
        
        for(int j = 0; j < 2; j++){
            for(int d = k % cyc[j]; d <= min(n, k); d += cyc[j])
                ans += fdist[j][d];
        }
 
        answer(ans);
    }
}

Subtask #1
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 16340 KB Output is correct
2 Correct 8 ms 16212 KB Output is correct
3 Correct 10 ms 16212 KB Output is correct
4 Correct 10 ms 16144 KB Output is correct
5 Correct 8 ms 16084 KB Output is correct
6 Correct 9 ms 16340 KB Output is correct
7 Correct 8 ms 16084 KB Output is correct
8 Correct 8 ms 16172 KB Output is correct
9 Correct 9 ms 16212 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 16340 KB Output is correct
2 Correct 8 ms 16212 KB Output is correct
3 Correct 10 ms 16212 KB Output is correct
4 Correct 10 ms 16144 KB Output is correct
5 Correct 8 ms 16084 KB Output is correct
6 Correct 9 ms 16340 KB Output is correct
7 Correct 8 ms 16084 KB Output is correct
8 Correct 8 ms 16172 KB Output is correct
9 Correct 9 ms 16212 KB Output is correct
10 Correct 8 ms 16084 KB Output is correct
11 Correct 17 ms 18260 KB Output is correct
12 Correct 27 ms 19372 KB Output is correct
13 Correct 47 ms 38764 KB Output is correct
14 Runtime error 154 ms 50656 KB Execution killed with signal 11
15 Halted 0 ms 0 KB -

Subtask #3
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 16340 KB Output is correct
2 Correct 8 ms 16212 KB Output is correct
3 Correct 10 ms 16212 KB Output is correct
4 Correct 10 ms 16144 KB Output is correct
5 Correct 8 ms 16084 KB Output is correct
6 Correct 9 ms 16340 KB Output is correct
7 Correct 8 ms 16084 KB Output is correct
8 Correct 8 ms 16172 KB Output is correct
9 Correct 9 ms 16212 KB Output is correct
10 Correct 8 ms 16084 KB Output is correct
11 Correct 17 ms 18260 KB Output is correct
12 Correct 27 ms 19372 KB Output is correct
13 Correct 47 ms 38764 KB Output is correct
14 Runtime error 154 ms 50656 KB Execution killed with signal 11
15 Halted 0 ms 0 KB -