oj.uz

Submission #918833

# Submission time Handle Problem Language Result Execution time Memory
918833 2024-01-30T13:47:26 Z vjudge1 Stranded Far From Home (BOI22_island) C++17
100 / 100
 293 ms 35128 KB 
#include <bits/stdc++.h>
 
#pragma GCC optimize("O3")
 
using namespace std;
 
#define ll long long int
#define oo 4e18
#define pii pair<int, int>
 
const int MAX = 2e5 + 5;
 
int par[MAX];
ll sum[MAX];
vector<int> st[MAX];
 
int findset(int u){
    if(par[u] < 0) return u;
    return par[u] = findset(par[u]);
}
 
bool unite(int u, int v){
    u = findset(u), v = findset(v);
    if(u == v) return false;
    if(-par[v] > -par[u]){
        swap(u, v);
    }
    if(st[u].size() < st[v].size()) swap(st[v], st[u]);
    for(int a:st[v]){
        st[u].push_back(a);
    }
    par[u] += par[v];
    par[v] = u;
    sum[u] += sum[v];
    return true;
}
 
int arr[MAX];
bool ans[MAX];
vector<int> g[MAX];
 
int main(){
    memset(par, -1, sizeof(par));
    fill(ans, ans + MAX, 1);
    int n, m; cin >> n >> m;
    vector<pii> v;
    for (int i = 1; i <= n; i++)
    {
        cin >> arr[i];
        sum[i] = arr[i];
        st[i].push_back(i);
        v.push_back({arr[i], i});
    }
    sort(v.begin(), v.end());
    for (int i = 0; i < m; i++)
    {
        int a, b; cin >> a >> b;
        g[a].push_back(b);
        g[b].push_back(a);
    }
    for(pii node : v){
        for(int to : g[node.second]){
            if(arr[to] > arr[node.second]) continue;
            int pto = findset(to), pnode = findset(node.second);
            if(pto == pnode) continue;
            if(sum[pto] < arr[node.second]){
                for(int a : st[pto]){
                    ans[a] = 0;
                }
                st[pto].clear();
            }
            unite(to, node.second);
        }
    }
    for (int i = 1; i <= n; i++)
    {
        cout << ans[i];
    }
    
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 13144 KB Output is correct
2 Correct 3 ms 13144 KB Output is correct
3 Correct 3 ms 13148 KB Output is correct
4 Correct 5 ms 13144 KB Output is correct
5 Correct 5 ms 13144 KB Output is correct
6 Correct 6 ms 13144 KB Output is correct
7 Correct 5 ms 13144 KB Output is correct
8 Correct 5 ms 13144 KB Output is correct
9 Correct 4 ms 13144 KB Output is correct
10 Correct 5 ms 13148 KB Output is correct
11 Correct 5 ms 13144 KB Output is correct
12 Correct 6 ms 13144 KB Output is correct
13 Correct 4 ms 13144 KB Output is correct
14 Correct 4 ms 13144 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 13144 KB Output is correct
2 Correct 3 ms 13148 KB Output is correct
3 Correct 220 ms 31400 KB Output is correct
4 Correct 208 ms 31164 KB Output is correct
5 Correct 234 ms 32448 KB Output is correct
6 Correct 263 ms 33148 KB Output is correct
7 Correct 240 ms 33212 KB Output is correct
8 Correct 250 ms 31844 KB Output is correct
9 Correct 212 ms 34024 KB Output is correct
10 Correct 192 ms 30240 KB Output is correct
11 Correct 212 ms 31848 KB Output is correct
12 Correct 233 ms 30376 KB Output is correct
13 Correct 181 ms 31164 KB Output is correct
14 Correct 205 ms 30908 KB Output is correct
15 Correct 219 ms 31632 KB Output is correct
16 Correct 166 ms 30952 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 13144 KB Output is correct
2 Correct 274 ms 33976 KB Output is correct
3 Correct 279 ms 33948 KB Output is correct
4 Correct 228 ms 31584 KB Output is correct
5 Correct 172 ms 30764 KB Output is correct
6 Correct 269 ms 33860 KB Output is correct
7 Correct 225 ms 31936 KB Output is correct
8 Correct 220 ms 31676 KB Output is correct
9 Correct 180 ms 31248 KB Output is correct
10 Correct 211 ms 30232 KB Output is correct
11 Correct 225 ms 30908 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 13144 KB Output is correct
2 Correct 280 ms 31676 KB Output is correct
3 Correct 280 ms 32028 KB Output is correct
4 Correct 293 ms 33344 KB Output is correct
5 Correct 284 ms 34536 KB Output is correct
6 Correct 262 ms 32260 KB Output is correct
7 Correct 208 ms 32444 KB Output is correct
8 Correct 168 ms 30656 KB Output is correct
9 Correct 144 ms 23488 KB Output is correct
10 Correct 235 ms 35004 KB Output is correct
11 Correct 212 ms 30656 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 13144 KB Output is correct
2 Correct 3 ms 13144 KB Output is correct
3 Correct 3 ms 13148 KB Output is correct
4 Correct 5 ms 13144 KB Output is correct
5 Correct 5 ms 13144 KB Output is correct
6 Correct 6 ms 13144 KB Output is correct
7 Correct 5 ms 13144 KB Output is correct
8 Correct 5 ms 13144 KB Output is correct
9 Correct 4 ms 13144 KB Output is correct
10 Correct 5 ms 13148 KB Output is correct
11 Correct 5 ms 13144 KB Output is correct
12 Correct 6 ms 13144 KB Output is correct
13 Correct 4 ms 13144 KB Output is correct
14 Correct 4 ms 13144 KB Output is correct
15 Correct 4 ms 13144 KB Output is correct
16 Correct 3 ms 13148 KB Output is correct
17 Correct 220 ms 31400 KB Output is correct
18 Correct 208 ms 31164 KB Output is correct
19 Correct 234 ms 32448 KB Output is correct
20 Correct 263 ms 33148 KB Output is correct
21 Correct 240 ms 33212 KB Output is correct
22 Correct 250 ms 31844 KB Output is correct
23 Correct 212 ms 34024 KB Output is correct
24 Correct 192 ms 30240 KB Output is correct
25 Correct 212 ms 31848 KB Output is correct
26 Correct 233 ms 30376 KB Output is correct
27 Correct 181 ms 31164 KB Output is correct
28 Correct 205 ms 30908 KB Output is correct
29 Correct 219 ms 31632 KB Output is correct
30 Correct 166 ms 30952 KB Output is correct
31 Correct 3 ms 13144 KB Output is correct
32 Correct 274 ms 33976 KB Output is correct
33 Correct 279 ms 33948 KB Output is correct
34 Correct 228 ms 31584 KB Output is correct
35 Correct 172 ms 30764 KB Output is correct
36 Correct 269 ms 33860 KB Output is correct
37 Correct 225 ms 31936 KB Output is correct
38 Correct 220 ms 31676 KB Output is correct
39 Correct 180 ms 31248 KB Output is correct
40 Correct 211 ms 30232 KB Output is correct
41 Correct 225 ms 30908 KB Output is correct
42 Correct 3 ms 13144 KB Output is correct
43 Correct 280 ms 31676 KB Output is correct
44 Correct 280 ms 32028 KB Output is correct
45 Correct 293 ms 33344 KB Output is correct
46 Correct 284 ms 34536 KB Output is correct
47 Correct 262 ms 32260 KB Output is correct
48 Correct 208 ms 32444 KB Output is correct
49 Correct 168 ms 30656 KB Output is correct
50 Correct 144 ms 23488 KB Output is correct
51 Correct 235 ms 35004 KB Output is correct
52 Correct 212 ms 30656 KB Output is correct
53 Correct 3 ms 13144 KB Output is correct
54 Correct 3 ms 13144 KB Output is correct
55 Correct 3 ms 13144 KB Output is correct
56 Correct 4 ms 13144 KB Output is correct
57 Correct 5 ms 13144 KB Output is correct
58 Correct 5 ms 13144 KB Output is correct
59 Correct 5 ms 13148 KB Output is correct
60 Correct 4 ms 13144 KB Output is correct
61 Correct 4 ms 13144 KB Output is correct
62 Correct 5 ms 13148 KB Output is correct
63 Correct 5 ms 13144 KB Output is correct
64 Correct 5 ms 13144 KB Output is correct
65 Correct 5 ms 13144 KB Output is correct
66 Correct 5 ms 13144 KB Output is correct
67 Correct 212 ms 31440 KB Output is correct
68 Correct 203 ms 31164 KB Output is correct
69 Correct 228 ms 32444 KB Output is correct
70 Correct 271 ms 33648 KB Output is correct
71 Correct 251 ms 33268 KB Output is correct
72 Correct 241 ms 31700 KB Output is correct
73 Correct 226 ms 34236 KB Output is correct
74 Correct 202 ms 30208 KB Output is correct
75 Correct 207 ms 31928 KB Output is correct
76 Correct 257 ms 30360 KB Output is correct
77 Correct 174 ms 30952 KB Output is correct
78 Correct 201 ms 30836 KB Output is correct
79 Correct 202 ms 31680 KB Output is correct
80 Correct 197 ms 30932 KB Output is correct
81 Correct 272 ms 33980 KB Output is correct
82 Correct 277 ms 33896 KB Output is correct
83 Correct 242 ms 31704 KB Output is correct
84 Correct 186 ms 30652 KB Output is correct
85 Correct 265 ms 33980 KB Output is correct
86 Correct 237 ms 31596 KB Output is correct
87 Correct 231 ms 31560 KB Output is correct
88 Correct 218 ms 30396 KB Output is correct
89 Correct 219 ms 30584 KB Output is correct
90 Correct 270 ms 31828 KB Output is correct
91 Correct 287 ms 32192 KB Output is correct
92 Correct 278 ms 33220 KB Output is correct
93 Correct 273 ms 34412 KB Output is correct
94 Correct 241 ms 32020 KB Output is correct
95 Correct 206 ms 32448 KB Output is correct
96 Correct 168 ms 30428 KB Output is correct
97 Correct 146 ms 23488 KB Output is correct
98 Correct 240 ms 35128 KB Output is correct
99 Correct 206 ms 30680 KB Output is correct
100 Correct 78 ms 16720 KB Output is correct
101 Correct 272 ms 32492 KB Output is correct
102 Correct 225 ms 28896 KB Output is correct
103 Correct 234 ms 28348 KB Output is correct
104 Correct 277 ms 31164 KB Output is correct