oj.uz

답안 #108977

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
108977 2019-05-03T12:11:47 Z PeppaPig Amusement Park (JOI17_amusement_park) C++14
28 / 100
 102 ms 24356 KB 
#include "Joi.h"
#include <bits/stdc++.h>
 
#define long long long
#define pii pair<int, int>
#define x first
#define y second
 
using namespace std;
 
const int N = 1e4+5;
 
static vector<int> g[N];
static vector<pii> init;
static int pre[N], pos[N];
 
static void dfs(int u, int p) {
    static int idx = 0;
    pre[u] = idx++;
    for(int v : g[u]) if(v != p) dfs(v, u);
}
 
static void gen_tree(int n, int m, int A[], int B[]) {
    int par[N]; iota(par, par+N, 0);
    vector<pii> E;
    
    function<int(int)> find = [&](int x) { return par[x] = x == par[x] ? x : find(par[x]); };
 
    for(int i = 0; i < m; i++) {
        if(A[i] > B[i]) swap(A[i], B[i]);
        E.emplace_back(A[i], B[i]);
    }
    sort(E.begin(), E.end());
 
    vector<pii> ret;
    for(pii e : E) {
        int a, b; tie(a, b) = e;
        if(find(a) != find(b)) {
            par[find(a)] = find(b);
            g[a].emplace_back(b), g[b].emplace_back(a);
            ret.emplace_back(a, b);
        }
    } 
    dfs(0, 0);
    for(int i = 0; i < n; i++) if(pre[i] < 60) pos[i] = pre[i];
    for(pii e : ret) {
        int a, b; tie(a, b) = e;
        if(pre[a] < 60 && pre[b] < 60) init.emplace_back(a, b);
    }
}
 
static int deg[N];
static vector<pii> t[N];
 
static void extend_tree(int u, int p) {
    if(!t[u].empty()) return;
    vector<pii> v = t[p];
    for(pii e : v) {
        int a, b; tie(a, b) = e;
        ++deg[a], ++deg[b];
    }
    int leaf;
    for(pii e : v) {
        int a, b; tie(a, b) = e;
        if(deg[a] > deg[b]) swap(a, b);
        if(deg[a] == 1) { leaf = a; break; }
    }
    pos[u] = pos[leaf];
    for(pii e : v) {
        int a, b; tie(a, b) = e;
        --deg[a], --deg[b];
        if(a == leaf || b == leaf) continue;
        t[u].emplace_back(a, b);
    }
    t[u].emplace_back(u, p);
    for(int v : g[u]) if(v != p) extend_tree(v, u);
}
 
void Joi(int n, int m, int A[], int B[], long x, int T) {
    gen_tree(n, m, A, B);
 
    for(int i = 0; i < n; i++) if(pre[i] < 60) t[i] = init;
    for(int i = 0; i < n; i++) if(pre[i] < 60) for(int v : g[i]) extend_tree(v, i);
    for(int i = 0; i < n; i++) MessageBoard(i, x >> pos[i] & 1);
}
#include "Ioi.h"
#include <bits/stdc++.h>
 
#define long long long
#define pii pair<int, int>
#define x first
#define y second
 
using namespace std;
 
const int N = 1e4+5;
 
static vector<int> g[N];
static vector<pii> init;
static int pre[N], pos[N];
 
static void dfs(int u, int p) {
    static int idx = 0;
    pre[u] = idx++;
    for(int v : g[u]) if(v != p) dfs(v, u);
}
 
static void gen_tree(int n, int m, int A[], int B[]) {
    int par[N]; iota(par, par+N, 0);
    vector<pii> E;
    
    function<int(int)> find = [&](int x) { return par[x] = x == par[x] ? x : find(par[x]); };
 
    for(int i = 0; i < m; i++) {
        if(A[i] > B[i]) swap(A[i], B[i]);
        E.emplace_back(A[i], B[i]);
    }
    sort(E.begin(), E.end());
 
    vector<pii> ret;
    for(pii e : E) {
        int a, b; tie(a, b) = e;
        if(find(a) != find(b)) {
            par[find(a)] = find(b);
            g[a].emplace_back(b), g[b].emplace_back(a);
            ret.emplace_back(a, b);
        }
    } 
    dfs(0, 0);
    for(int i = 0; i < n; i++) if(pre[i] < 60) pos[i] = pre[i];
    for(pii e : ret) {
        int a, b; tie(a, b) = e;
        if(pre[a] < 60 && pre[b] < 60) init.emplace_back(a, b);
    }
}
 
static int deg[N];
static vector<pii> t[N];
 
static void extend_tree(int u, int p) {
    if(!t[u].empty()) return;
    vector<pii> v = t[p];
    for(pii e : v) {
        int a, b; tie(a, b) = e;
        ++deg[a], ++deg[b];
    }
    int leaf;
    for(pii e : v) {
        int a, b; tie(a, b) = e;
        if(deg[a] > deg[b]) swap(a, b);
        if(deg[a] == 1) { leaf = a; break; }
    }
    pos[u] = pos[leaf];
    for(pii e : v) {
        int a, b; tie(a, b) = e;
        --deg[a], --deg[b];
        if(a == leaf || b == leaf) continue;
        t[u].emplace_back(a, b);
    }
    t[u].emplace_back(u, p);
    for(int v : g[u]) if(v != p) extend_tree(v, u);
}
 
static long ans;
 
static void get_ans(int u, int p) {
    for(int v : g[u]) if(v != p) {
        int nex = Move(v);
        if(nex) ans += 1ll << pos[v];
        get_ans(v, u);
        Move(u);
    }
}
 
long Ioi(int n, int m, int A[], int B[], int P, int V, int T) {
    gen_tree(n, m, A, B);
 
    for(int i = 0; i < n; i++) if(pre[i] < 60) t[i] = init;
    for(int i = 0; i < n; i++) if(pre[i] < 60) for(int v : g[i]) extend_tree(v, i);
    for(int i = 0; i < n; i++) g[i].clear();
 
    if(V) ans += 1ll << pos[P];
    for(pii e : t[P]) g[e.x].emplace_back(e.y), g[e.y].emplace_back(e.x);
    get_ans(P, P);
 
    return ans;
}

Compilation message

Joi.cpp: In function 'void extend_tree(int, int)':
Joi.cpp:68:22: warning: 'leaf' may be used uninitialized in this function [-Wmaybe-uninitialized]
     pos[u] = pos[leaf];
              ~~~~~~~~^

Ioi.cpp: In function 'void extend_tree(int, int)':
Ioi.cpp:68:22: warning: 'leaf' may be used uninitialized in this function [-Wmaybe-uninitialized]
     pos[u] = pos[leaf];
              ~~~~~~~~^

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 2068 KB Output is correct
2 Correct 6 ms 1920 KB Output is correct
3 Correct 6 ms 2180 KB Output is correct
4 Correct 5 ms 1792 KB Output is correct
5 Correct 7 ms 1920 KB Output is correct
6 Correct 5 ms 2056 KB Output is correct
7 Correct 7 ms 2180 KB Output is correct
8 Correct 6 ms 2180 KB Output is correct
9 Correct 6 ms 2180 KB Output is correct
10 Correct 6 ms 2048 KB Output is correct
11 Correct 9 ms 2232 KB Output is correct
12 Correct 5 ms 1920 KB Output is correct
13 Correct 6 ms 2188 KB Output is correct
14 Correct 6 ms 2180 KB Output is correct
15 Correct 7 ms 2180 KB Output is correct
16 Correct 7 ms 2052 KB Output is correct
17 Correct 6 ms 2180 KB Output is correct
18 Correct 6 ms 2052 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 81 ms 14444 KB Output is correct
2 Correct 79 ms 14468 KB Output is correct
3 Correct 102 ms 14336 KB Output is correct
4 Correct 73 ms 13780 KB Output is correct
5 Correct 72 ms 18756 KB Output is correct
6 Correct 72 ms 17032 KB Output is correct
7 Correct 66 ms 17200 KB Output is correct
8 Correct 78 ms 17904 KB Output is correct
9 Correct 81 ms 18072 KB Output is correct
10 Correct 56 ms 13960 KB Output is correct
11 Correct 48 ms 14220 KB Output is correct
12 Correct 55 ms 12532 KB Output is correct
13 Correct 57 ms 12752 KB Output is correct
14 Correct 70 ms 13284 KB Output is correct
15 Correct 63 ms 13824 KB Output is correct
16 Correct 71 ms 13884 KB Output is correct
17 Correct 65 ms 13792 KB Output is correct
18 Correct 82 ms 13556 KB Output is correct
19 Correct 68 ms 13876 KB Output is correct
20 Correct 60 ms 19288 KB Output is correct
21 Correct 60 ms 18916 KB Output is correct
22 Correct 84 ms 16364 KB Output is correct
23 Correct 73 ms 17820 KB Output is correct
24 Correct 81 ms 16792 KB Output is correct
25 Correct 90 ms 17496 KB Output is correct
26 Correct 81 ms 18080 KB Output is correct
27 Correct 75 ms 18064 KB Output is correct
28 Correct 83 ms 18372 KB Output is correct
29 Correct 84 ms 16264 KB Output is correct
30 Correct 68 ms 16760 KB Output is correct
31 Correct 5 ms 2180 KB Output is correct
32 Correct 6 ms 2152 KB Output is correct
33 Correct 8 ms 2188 KB Output is correct
34 Correct 6 ms 2048 KB Output is correct
35 Correct 6 ms 2152 KB Output is correct
36 Correct 5 ms 1920 KB Output is correct
37 Correct 6 ms 1920 KB Output is correct
38 Correct 5 ms 1792 KB Output is correct
39 Correct 7 ms 1920 KB Output is correct
40 Correct 6 ms 2056 KB Output is correct
41 Correct 6 ms 1928 KB Output is correct
42 Correct 6 ms 1972 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 1936 KB Output is correct
2 Correct 5 ms 1936 KB Output is correct
3 Correct 6 ms 2076 KB Output is correct
4 Correct 14 ms 5532 KB Output is correct
5 Correct 14 ms 5404 KB Output is correct
6 Correct 14 ms 5148 KB Output is correct
7 Correct 17 ms 5540 KB Output is correct
8 Correct 13 ms 5520 KB Output is correct
9 Correct 61 ms 24340 KB Output is correct
10 Correct 63 ms 24300 KB Output is correct
11 Correct 62 ms 24356 KB Output is correct
12 Correct 5 ms 1928 KB Output is correct
13 Correct 5 ms 1920 KB Output is correct
14 Correct 6 ms 1800 KB Output is correct
15 Correct 4 ms 1920 KB Output is correct

Subtask #4
0 / 55.0

# 결과 실행 시간 메모리 Grader output
1 Correct 71 ms 14460 KB Output is correct
2 Incorrect 66 ms 14436 KB Wrong Answer [7]
3 Halted 0 ms 0 KB -

Subtask #5
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 83 ms 14516 KB Output is correct
2 Correct 69 ms 14404 KB Output is correct
3 Correct 87 ms 14624 KB Output is correct
4 Correct 66 ms 13804 KB Output is correct
5 Incorrect 80 ms 22680 KB Wrong Answer [7]
6 Halted 0 ms 0 KB -