oj.uz

Submission #717922

# Submission time Handle Problem Language Result Execution time Memory
717922 2023-04-02T21:02:18 Z vjudge1 Stranded Far From Home (BOI22_island) C++17
100 / 100
 480 ms 53816 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
 
#define OPT ios_base::sync_with_stdio(0); \
            cin.tie(0); \
            cout.tie(0)
 
#define pii pair<int,int>
#define pll pair<ll,ll>
#define endl "\n"
#define all(v) v.begin(), v.end()
#define mpr make_pair
#define pb push_back
#define ts to_string
#define fi first
#define se second
#define inf 0x3F3F3F3F
#define bpc __builtin_popcount
#define print(v) for(int i = 0; i < v.size(); i++) \
                    cout << v[i] << " "; \
                    cout<<endl;
 
ll n;
vector<ll> v(200001);
vector<ll> d[200001];
vector<ll> sum(200001);
vector<bool> ans(200001, true);
vector<ll> e(200001, -1);
vector<vector<ll>> adj(200001);
void init(int n)
{
    for (int i = 1; i <= n; i++)
    {
        d[i].pb(i);
        sum[i] = v[i];
    }
}
 
int get(int x)
{
    if (e[x] < 0) return x;
    return e[x] = get(e[x]);
}
 
int s(int x)
{
    return -e[get(x)];
}
 
void unite(int x, int y)
{
    x = get(x);
    y = get(y);
 
    if (x == y) return;
 
    if (e[x] > e[y]) swap(x, y);
 
    e[x] += e[y];
    e[y] = x;
 
    sum[x] += sum[y];
 
    for (int i = 0; i < d[y].size(); i++)
    {
        d[x].pb(d[y][i]);
    }
}
 
ll get_sum(int x)
{
    x = get(x);
    return sum[x];
}
 
int main()
{
    int m;
    cin >> n >> m;
    vector<pii> arr(n + 1);
    for (int i = 1; i <= n; i++)
    {
        cin >> v[i];
        arr[i].fi = v[i];
        arr[i].se = i;
    }
 
    while (m--)
    {
        int u, v;
        cin >> u >> v;
        adj[u].pb(v);
        adj[v].pb(u);
    }
 
    sort(arr.begin() + 1, arr.end());
 
    init(n);
 
    for (int i = 1; i <= n; i++)
    {
        for (int j = 0; j < adj[arr[i].se].size(); j++)
        {
            int x = arr[i].se;
            int y = adj[x][j];
            if (arr[i].fi < v[y]) continue;
 
            int z = get(y);
 
            if (sum[z] < arr[i].fi)
            {
                for (int k = 0; k < d[z].size(); k++)
                {
                    ans[d[z][k]] = false;
                }
            }
 
            unite(x, y);
        }
    }
 
    for (int i = 1; i <= n; i++) cout << ans[i];
}

Compilation message

island.cpp: In function 'void unite(int, int)':
island.cpp:67:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |     for (int i = 0; i < d[y].size(); i++)
      |                     ~~^~~~~~~~~~~~~
island.cpp: In function 'int main()':
island.cpp:105:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  105 |         for (int j = 0; j < adj[arr[i].se].size(); j++)
      |                         ~~^~~~~~~~~~~~~~~~~~~~~~~
island.cpp:115:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  115 |                 for (int k = 0; k < d[z].size(); k++)
      |                                 ~~^~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 7 ms 14420 KB Output is correct
4 Correct 9 ms 14548 KB Output is correct
5 Correct 9 ms 14588 KB Output is correct
6 Correct 9 ms 14548 KB Output is correct
7 Correct 9 ms 14576 KB Output is correct
8 Correct 10 ms 14496 KB Output is correct
9 Correct 9 ms 14536 KB Output is correct
10 Correct 10 ms 14644 KB Output is correct
11 Correct 12 ms 14704 KB Output is correct
12 Correct 9 ms 14760 KB Output is correct
13 Correct 8 ms 14504 KB Output is correct
14 Correct 9 ms 14576 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 7 ms 14432 KB Output is correct
3 Correct 304 ms 36872 KB Output is correct
4 Correct 251 ms 34584 KB Output is correct
5 Correct 321 ms 43488 KB Output is correct
6 Correct 345 ms 44448 KB Output is correct
7 Correct 341 ms 44884 KB Output is correct
8 Correct 314 ms 36032 KB Output is correct
9 Correct 294 ms 53816 KB Output is correct
10 Correct 244 ms 36668 KB Output is correct
11 Correct 246 ms 36556 KB Output is correct
12 Correct 281 ms 36580 KB Output is correct
13 Correct 258 ms 33644 KB Output is correct
14 Correct 250 ms 33724 KB Output is correct
15 Correct 290 ms 35172 KB Output is correct
16 Correct 204 ms 34280 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 424 ms 47564 KB Output is correct
3 Correct 372 ms 47680 KB Output is correct
4 Correct 291 ms 35084 KB Output is correct
5 Correct 275 ms 34136 KB Output is correct
6 Correct 372 ms 47624 KB Output is correct
7 Correct 319 ms 35176 KB Output is correct
8 Correct 290 ms 35084 KB Output is correct
9 Correct 206 ms 34252 KB Output is correct
10 Correct 264 ms 34392 KB Output is correct
11 Correct 275 ms 36592 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 14420 KB Output is correct
2 Correct 388 ms 40252 KB Output is correct
3 Correct 375 ms 41656 KB Output is correct
4 Correct 385 ms 43304 KB Output is correct
5 Correct 370 ms 41920 KB Output is correct
6 Correct 342 ms 38364 KB Output is correct
7 Correct 277 ms 37660 KB Output is correct
8 Correct 195 ms 35540 KB Output is correct
9 Correct 213 ms 28988 KB Output is correct
10 Correct 317 ms 41924 KB Output is correct
11 Correct 281 ms 36108 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 7 ms 14420 KB Output is correct
4 Correct 9 ms 14548 KB Output is correct
5 Correct 9 ms 14588 KB Output is correct
6 Correct 9 ms 14548 KB Output is correct
7 Correct 9 ms 14576 KB Output is correct
8 Correct 10 ms 14496 KB Output is correct
9 Correct 9 ms 14536 KB Output is correct
10 Correct 10 ms 14644 KB Output is correct
11 Correct 12 ms 14704 KB Output is correct
12 Correct 9 ms 14760 KB Output is correct
13 Correct 8 ms 14504 KB Output is correct
14 Correct 9 ms 14576 KB Output is correct
15 Correct 7 ms 14420 KB Output is correct
16 Correct 7 ms 14432 KB Output is correct
17 Correct 304 ms 36872 KB Output is correct
18 Correct 251 ms 34584 KB Output is correct
19 Correct 321 ms 43488 KB Output is correct
20 Correct 345 ms 44448 KB Output is correct
21 Correct 341 ms 44884 KB Output is correct
22 Correct 314 ms 36032 KB Output is correct
23 Correct 294 ms 53816 KB Output is correct
24 Correct 244 ms 36668 KB Output is correct
25 Correct 246 ms 36556 KB Output is correct
26 Correct 281 ms 36580 KB Output is correct
27 Correct 258 ms 33644 KB Output is correct
28 Correct 250 ms 33724 KB Output is correct
29 Correct 290 ms 35172 KB Output is correct
30 Correct 204 ms 34280 KB Output is correct
31 Correct 7 ms 14420 KB Output is correct
32 Correct 424 ms 47564 KB Output is correct
33 Correct 372 ms 47680 KB Output is correct
34 Correct 291 ms 35084 KB Output is correct
35 Correct 275 ms 34136 KB Output is correct
36 Correct 372 ms 47624 KB Output is correct
37 Correct 319 ms 35176 KB Output is correct
38 Correct 290 ms 35084 KB Output is correct
39 Correct 206 ms 34252 KB Output is correct
40 Correct 264 ms 34392 KB Output is correct
41 Correct 275 ms 36592 KB Output is correct
42 Correct 8 ms 14420 KB Output is correct
43 Correct 388 ms 40252 KB Output is correct
44 Correct 375 ms 41656 KB Output is correct
45 Correct 385 ms 43304 KB Output is correct
46 Correct 370 ms 41920 KB Output is correct
47 Correct 342 ms 38364 KB Output is correct
48 Correct 277 ms 37660 KB Output is correct
49 Correct 195 ms 35540 KB Output is correct
50 Correct 213 ms 28988 KB Output is correct
51 Correct 317 ms 41924 KB Output is correct
52 Correct 281 ms 36108 KB Output is correct
53 Correct 7 ms 14420 KB Output is correct
54 Correct 6 ms 14420 KB Output is correct
55 Correct 7 ms 14312 KB Output is correct
56 Correct 8 ms 14604 KB Output is correct
57 Correct 9 ms 14624 KB Output is correct
58 Correct 8 ms 14548 KB Output is correct
59 Correct 9 ms 14548 KB Output is correct
60 Correct 9 ms 14548 KB Output is correct
61 Correct 9 ms 14572 KB Output is correct
62 Correct 11 ms 14676 KB Output is correct
63 Correct 9 ms 14696 KB Output is correct
64 Correct 10 ms 14676 KB Output is correct
65 Correct 9 ms 14572 KB Output is correct
66 Correct 8 ms 14572 KB Output is correct
67 Correct 288 ms 36936 KB Output is correct
68 Correct 264 ms 34616 KB Output is correct
69 Correct 328 ms 43504 KB Output is correct
70 Correct 359 ms 44544 KB Output is correct
71 Correct 329 ms 44816 KB Output is correct
72 Correct 320 ms 35944 KB Output is correct
73 Correct 323 ms 53756 KB Output is correct
74 Correct 273 ms 36668 KB Output is correct
75 Correct 251 ms 36540 KB Output is correct
76 Correct 286 ms 36576 KB Output is correct
77 Correct 223 ms 33620 KB Output is correct
78 Correct 255 ms 33736 KB Output is correct
79 Correct 262 ms 35060 KB Output is correct
80 Correct 239 ms 34260 KB Output is correct
81 Correct 378 ms 47540 KB Output is correct
82 Correct 363 ms 47696 KB Output is correct
83 Correct 299 ms 35080 KB Output is correct
84 Correct 243 ms 34204 KB Output is correct
85 Correct 382 ms 47812 KB Output is correct
86 Correct 304 ms 35144 KB Output is correct
87 Correct 304 ms 35180 KB Output is correct
88 Correct 291 ms 34468 KB Output is correct
89 Correct 293 ms 36576 KB Output is correct
90 Correct 453 ms 40300 KB Output is correct
91 Correct 440 ms 41616 KB Output is correct
92 Correct 480 ms 43144 KB Output is correct
93 Correct 438 ms 41852 KB Output is correct
94 Correct 387 ms 38448 KB Output is correct
95 Correct 347 ms 37496 KB Output is correct
96 Correct 208 ms 35536 KB Output is correct
97 Correct 255 ms 29144 KB Output is correct
98 Correct 363 ms 42012 KB Output is correct
99 Correct 288 ms 36104 KB Output is correct
100 Correct 108 ms 20820 KB Output is correct
101 Correct 396 ms 42824 KB Output is correct
102 Correct 291 ms 34788 KB Output is correct
103 Correct 354 ms 35392 KB Output is correct
104 Correct 369 ms 39192 KB Output is correct