oj.uz

Submission #757806

# Submission time Handle Problem Language Result Execution time Memory
757806 2023-06-13T18:41:17 Z thinkphp Stranded Far From Home (BOI22_island) C++17
100 / 100
 465 ms 53456 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 14432 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 14580 KB Output is correct
6 Correct 9 ms 14596 KB Output is correct
7 Correct 9 ms 14572 KB Output is correct
8 Correct 10 ms 14548 KB Output is correct
9 Correct 9 ms 14548 KB Output is correct
10 Correct 10 ms 14700 KB Output is correct
11 Correct 9 ms 14592 KB Output is correct
12 Correct 10 ms 14676 KB Output is correct
13 Correct 9 ms 14580 KB Output is correct
14 Correct 9 ms 14608 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 36488 KB Output is correct
4 Correct 262 ms 34576 KB Output is correct
5 Correct 337 ms 43248 KB Output is correct
6 Correct 340 ms 44084 KB Output is correct
7 Correct 362 ms 44508 KB Output is correct
8 Correct 312 ms 35512 KB Output is correct
9 Correct 317 ms 53456 KB Output is correct
10 Correct 251 ms 36688 KB Output is correct
11 Correct 245 ms 36604 KB Output is correct
12 Correct 259 ms 36576 KB Output is correct
13 Correct 226 ms 33480 KB Output is correct
14 Correct 242 ms 33736 KB Output is correct
15 Correct 277 ms 34612 KB Output is correct
16 Correct 204 ms 34268 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 14548 KB Output is correct
2 Correct 356 ms 47128 KB Output is correct
3 Correct 360 ms 47104 KB Output is correct
4 Correct 288 ms 34632 KB Output is correct
5 Correct 244 ms 34108 KB Output is correct
6 Correct 362 ms 47140 KB Output is correct
7 Correct 292 ms 34644 KB Output is correct
8 Correct 295 ms 34616 KB Output is correct
9 Correct 207 ms 34204 KB Output is correct
10 Correct 259 ms 34376 KB Output is correct
11 Correct 286 ms 36596 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 364 ms 39760 KB Output is correct
3 Correct 363 ms 41160 KB Output is correct
4 Correct 387 ms 42704 KB Output is correct
5 Correct 362 ms 41536 KB Output is correct
6 Correct 330 ms 38100 KB Output is correct
7 Correct 272 ms 37124 KB Output is correct
8 Correct 196 ms 35420 KB Output is correct
9 Correct 196 ms 29096 KB Output is correct
10 Correct 306 ms 41936 KB Output is correct
11 Correct 266 ms 36144 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 14432 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 14580 KB Output is correct
6 Correct 9 ms 14596 KB Output is correct
7 Correct 9 ms 14572 KB Output is correct
8 Correct 10 ms 14548 KB Output is correct
9 Correct 9 ms 14548 KB Output is correct
10 Correct 10 ms 14700 KB Output is correct
11 Correct 9 ms 14592 KB Output is correct
12 Correct 10 ms 14676 KB Output is correct
13 Correct 9 ms 14580 KB Output is correct
14 Correct 9 ms 14608 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 36488 KB Output is correct
18 Correct 262 ms 34576 KB Output is correct
19 Correct 337 ms 43248 KB Output is correct
20 Correct 340 ms 44084 KB Output is correct
21 Correct 362 ms 44508 KB Output is correct
22 Correct 312 ms 35512 KB Output is correct
23 Correct 317 ms 53456 KB Output is correct
24 Correct 251 ms 36688 KB Output is correct
25 Correct 245 ms 36604 KB Output is correct
26 Correct 259 ms 36576 KB Output is correct
27 Correct 226 ms 33480 KB Output is correct
28 Correct 242 ms 33736 KB Output is correct
29 Correct 277 ms 34612 KB Output is correct
30 Correct 204 ms 34268 KB Output is correct
31 Correct 8 ms 14548 KB Output is correct
32 Correct 356 ms 47128 KB Output is correct
33 Correct 360 ms 47104 KB Output is correct
34 Correct 288 ms 34632 KB Output is correct
35 Correct 244 ms 34108 KB Output is correct
36 Correct 362 ms 47140 KB Output is correct
37 Correct 292 ms 34644 KB Output is correct
38 Correct 295 ms 34616 KB Output is correct
39 Correct 207 ms 34204 KB Output is correct
40 Correct 259 ms 34376 KB Output is correct
41 Correct 286 ms 36596 KB Output is correct
42 Correct 7 ms 14420 KB Output is correct
43 Correct 364 ms 39760 KB Output is correct
44 Correct 363 ms 41160 KB Output is correct
45 Correct 387 ms 42704 KB Output is correct
46 Correct 362 ms 41536 KB Output is correct
47 Correct 330 ms 38100 KB Output is correct
48 Correct 272 ms 37124 KB Output is correct
49 Correct 196 ms 35420 KB Output is correct
50 Correct 196 ms 29096 KB Output is correct
51 Correct 306 ms 41936 KB Output is correct
52 Correct 266 ms 36144 KB Output is correct
53 Correct 7 ms 14436 KB Output is correct
54 Correct 8 ms 14396 KB Output is correct
55 Correct 9 ms 14420 KB Output is correct
56 Correct 10 ms 14540 KB Output is correct
57 Correct 10 ms 14576 KB Output is correct
58 Correct 8 ms 14548 KB Output is correct
59 Correct 10 ms 14584 KB Output is correct
60 Correct 9 ms 14488 KB Output is correct
61 Correct 9 ms 14548 KB Output is correct
62 Correct 10 ms 14700 KB Output is correct
63 Correct 9 ms 14704 KB Output is correct
64 Correct 9 ms 14676 KB Output is correct
65 Correct 9 ms 14584 KB Output is correct
66 Correct 9 ms 14548 KB Output is correct
67 Correct 286 ms 36408 KB Output is correct
68 Correct 262 ms 34504 KB Output is correct
69 Correct 315 ms 43192 KB Output is correct
70 Correct 342 ms 44216 KB Output is correct
71 Correct 332 ms 44468 KB Output is correct
72 Correct 315 ms 35624 KB Output is correct
73 Correct 312 ms 53336 KB Output is correct
74 Correct 251 ms 36668 KB Output is correct
75 Correct 242 ms 36520 KB Output is correct
76 Correct 267 ms 36516 KB Output is correct
77 Correct 231 ms 33592 KB Output is correct
78 Correct 236 ms 33736 KB Output is correct
79 Correct 262 ms 34680 KB Output is correct
80 Correct 203 ms 34292 KB Output is correct
81 Correct 368 ms 47132 KB Output is correct
82 Correct 366 ms 47236 KB Output is correct
83 Correct 293 ms 34580 KB Output is correct
84 Correct 272 ms 34192 KB Output is correct
85 Correct 356 ms 47232 KB Output is correct
86 Correct 293 ms 34620 KB Output is correct
87 Correct 273 ms 34620 KB Output is correct
88 Correct 257 ms 34360 KB Output is correct
89 Correct 271 ms 36696 KB Output is correct
90 Correct 409 ms 39808 KB Output is correct
91 Correct 413 ms 41124 KB Output is correct
92 Correct 465 ms 42668 KB Output is correct
93 Correct 387 ms 41404 KB Output is correct
94 Correct 352 ms 38144 KB Output is correct
95 Correct 265 ms 37040 KB Output is correct
96 Correct 198 ms 35440 KB Output is correct
97 Correct 228 ms 29060 KB Output is correct
98 Correct 313 ms 41996 KB Output is correct
99 Correct 280 ms 36048 KB Output is correct
100 Correct 107 ms 20852 KB Output is correct
101 Correct 389 ms 42256 KB Output is correct
102 Correct 293 ms 34756 KB Output is correct
103 Correct 330 ms 35256 KB Output is correct
104 Correct 408 ms 38848 KB Output is correct