oj.uz

Submission #715002

# Submission time Handle Problem Language Result Execution time Memory
715002 2023-03-25T17:25:55 Z aykhn Stranded Far From Home (BOI22_island) C++14
100 / 100
 461 ms 49364 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 8 ms 14420 KB Output is correct
2 Correct 8 ms 14368 KB Output is correct
3 Correct 9 ms 14420 KB Output is correct
4 Correct 12 ms 14548 KB Output is correct
5 Correct 11 ms 14548 KB Output is correct
6 Correct 10 ms 14548 KB Output is correct
7 Correct 13 ms 14548 KB Output is correct
8 Correct 9 ms 14548 KB Output is correct
9 Correct 9 ms 14576 KB Output is correct
10 Correct 10 ms 14676 KB Output is correct
11 Correct 9 ms 14612 KB Output is correct
12 Correct 9 ms 14676 KB Output is correct
13 Correct 9 ms 14548 KB Output is correct
14 Correct 9 ms 14548 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 292 ms 32508 KB Output is correct
4 Correct 299 ms 31464 KB Output is correct
5 Correct 331 ms 39256 KB Output is correct
6 Correct 343 ms 40148 KB Output is correct
7 Correct 349 ms 40532 KB Output is correct
8 Correct 317 ms 31632 KB Output is correct
9 Correct 344 ms 49344 KB Output is correct
10 Correct 280 ms 33236 KB Output is correct
11 Correct 257 ms 33044 KB Output is correct
12 Correct 284 ms 33508 KB Output is correct
13 Correct 263 ms 30692 KB Output is correct
14 Correct 306 ms 30692 KB Output is correct
15 Correct 299 ms 30784 KB Output is correct
16 Correct 231 ms 30416 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 14420 KB Output is correct
2 Correct 399 ms 43448 KB Output is correct
3 Correct 416 ms 43100 KB Output is correct
4 Correct 318 ms 30664 KB Output is correct
5 Correct 244 ms 31216 KB Output is correct
6 Correct 417 ms 43172 KB Output is correct
7 Correct 291 ms 30664 KB Output is correct
8 Correct 294 ms 30764 KB Output is correct
9 Correct 217 ms 30508 KB Output is correct
10 Correct 262 ms 30572 KB Output is correct
11 Correct 337 ms 33600 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 14420 KB Output is correct
2 Correct 423 ms 35804 KB Output is correct
3 Correct 425 ms 37184 KB Output is correct
4 Correct 404 ms 38804 KB Output is correct
5 Correct 364 ms 37460 KB Output is correct
6 Correct 377 ms 34060 KB Output is correct
7 Correct 289 ms 33128 KB Output is correct
8 Correct 210 ms 32352 KB Output is correct
9 Correct 227 ms 26464 KB Output is correct
10 Correct 335 ms 39124 KB Output is correct
11 Correct 294 ms 33072 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 14420 KB Output is correct
2 Correct 8 ms 14368 KB Output is correct
3 Correct 9 ms 14420 KB Output is correct
4 Correct 12 ms 14548 KB Output is correct
5 Correct 11 ms 14548 KB Output is correct
6 Correct 10 ms 14548 KB Output is correct
7 Correct 13 ms 14548 KB Output is correct
8 Correct 9 ms 14548 KB Output is correct
9 Correct 9 ms 14576 KB Output is correct
10 Correct 10 ms 14676 KB Output is correct
11 Correct 9 ms 14612 KB Output is correct
12 Correct 9 ms 14676 KB Output is correct
13 Correct 9 ms 14548 KB Output is correct
14 Correct 9 ms 14548 KB Output is correct
15 Correct 8 ms 14420 KB Output is correct
16 Correct 7 ms 14420 KB Output is correct
17 Correct 292 ms 32508 KB Output is correct
18 Correct 299 ms 31464 KB Output is correct
19 Correct 331 ms 39256 KB Output is correct
20 Correct 343 ms 40148 KB Output is correct
21 Correct 349 ms 40532 KB Output is correct
22 Correct 317 ms 31632 KB Output is correct
23 Correct 344 ms 49344 KB Output is correct
24 Correct 280 ms 33236 KB Output is correct
25 Correct 257 ms 33044 KB Output is correct
26 Correct 284 ms 33508 KB Output is correct
27 Correct 263 ms 30692 KB Output is correct
28 Correct 306 ms 30692 KB Output is correct
29 Correct 299 ms 30784 KB Output is correct
30 Correct 231 ms 30416 KB Output is correct
31 Correct 8 ms 14420 KB Output is correct
32 Correct 399 ms 43448 KB Output is correct
33 Correct 416 ms 43100 KB Output is correct
34 Correct 318 ms 30664 KB Output is correct
35 Correct 244 ms 31216 KB Output is correct
36 Correct 417 ms 43172 KB Output is correct
37 Correct 291 ms 30664 KB Output is correct
38 Correct 294 ms 30764 KB Output is correct
39 Correct 217 ms 30508 KB Output is correct
40 Correct 262 ms 30572 KB Output is correct
41 Correct 337 ms 33600 KB Output is correct
42 Correct 10 ms 14420 KB Output is correct
43 Correct 423 ms 35804 KB Output is correct
44 Correct 425 ms 37184 KB Output is correct
45 Correct 404 ms 38804 KB Output is correct
46 Correct 364 ms 37460 KB Output is correct
47 Correct 377 ms 34060 KB Output is correct
48 Correct 289 ms 33128 KB Output is correct
49 Correct 210 ms 32352 KB Output is correct
50 Correct 227 ms 26464 KB Output is correct
51 Correct 335 ms 39124 KB Output is correct
52 Correct 294 ms 33072 KB Output is correct
53 Correct 8 ms 14420 KB Output is correct
54 Correct 8 ms 14420 KB Output is correct
55 Correct 8 ms 14420 KB Output is correct
56 Correct 11 ms 14548 KB Output is correct
57 Correct 12 ms 14548 KB Output is correct
58 Correct 11 ms 14568 KB Output is correct
59 Correct 10 ms 14516 KB Output is correct
60 Correct 9 ms 14548 KB Output is correct
61 Correct 10 ms 14548 KB Output is correct
62 Correct 10 ms 14676 KB Output is correct
63 Correct 9 ms 14676 KB Output is correct
64 Correct 12 ms 14688 KB Output is correct
65 Correct 10 ms 14548 KB Output is correct
66 Correct 9 ms 14640 KB Output is correct
67 Correct 295 ms 32504 KB Output is correct
68 Correct 264 ms 31540 KB Output is correct
69 Correct 365 ms 39264 KB Output is correct
70 Correct 461 ms 40136 KB Output is correct
71 Correct 456 ms 40464 KB Output is correct
72 Correct 353 ms 31596 KB Output is correct
73 Correct 396 ms 49364 KB Output is correct
74 Correct 277 ms 33144 KB Output is correct
75 Correct 257 ms 33116 KB Output is correct
76 Correct 307 ms 33556 KB Output is correct
77 Correct 258 ms 30696 KB Output is correct
78 Correct 304 ms 30584 KB Output is correct
79 Correct 283 ms 30696 KB Output is correct
80 Correct 222 ms 30496 KB Output is correct
81 Correct 359 ms 43204 KB Output is correct
82 Correct 422 ms 43116 KB Output is correct
83 Correct 308 ms 30736 KB Output is correct
84 Correct 258 ms 31204 KB Output is correct
85 Correct 377 ms 43232 KB Output is correct
86 Correct 319 ms 30664 KB Output is correct
87 Correct 320 ms 30760 KB Output is correct
88 Correct 297 ms 30696 KB Output is correct
89 Correct 271 ms 33700 KB Output is correct
90 Correct 402 ms 35924 KB Output is correct
91 Correct 371 ms 37148 KB Output is correct
92 Correct 395 ms 38732 KB Output is correct
93 Correct 389 ms 37468 KB Output is correct
94 Correct 336 ms 34060 KB Output is correct
95 Correct 277 ms 33092 KB Output is correct
96 Correct 208 ms 32240 KB Output is correct
97 Correct 208 ms 26424 KB Output is correct
98 Correct 310 ms 39116 KB Output is correct
99 Correct 281 ms 33360 KB Output is correct
100 Correct 113 ms 19140 KB Output is correct
101 Correct 414 ms 38324 KB Output is correct
102 Correct 323 ms 30868 KB Output is correct
103 Correct 354 ms 31320 KB Output is correct
104 Correct 385 ms 34880 KB Output is correct