oj.uz

Submission #828475

# Submission time Handle Problem Language Result Execution time Memory
828475 2023-08-17T10:12:30 Z Pacybwoah Stranded Far From Home (BOI22_island) C++17
100 / 100
 359 ms 41776 KB 
#include<iostream>
#include<vector>
#include<algorithm>
#include<set>
#define ll long long
using namespace std;
vector<int> dsu,sz,ans;
vector<ll> sum;
vector<set<int> > nodes;
void build(int n){
    dsu.resize(n+1);
    sz.resize(n+1);
    for(int i=1;i<=n;i++) dsu[i]=i,sz[i]=1,nodes[i].insert(i);
}
int query(int x){
    if(dsu[x]==x) return x;
    return query(dsu[x]);
}
void unite(int a,int b,int ori){
    a=query(a),b=query(b);
    if(a==b) return;
    if(ori>sum[b]){
        for(auto x:nodes[b]){
                    ans[x]=0;
                }
                nodes[b].clear();
    }
    if(sz[a]<sz[b]) swap(a,b);
    dsu[b]=a;
    sz[a]+=sz[b];
    sum[a]+=sum[b];
    for(auto x:nodes[b]) if(ans[x]==-1) nodes[a].insert(x);
    nodes[b].clear();
}
int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n,m;
    cin>>n>>m;
    vector<vector<int> > graph;
    ans.resize(n+1,-1);
    nodes.resize(n+1);
    graph.resize(n+1);
    sum.resize(n+1);
    vector<pair<ll,int> > val(n);
    for(int i=1;i<=n;i++) cin>>val[i-1].first,val[i-1].second=i,sum[i]=val[i-1].first;
    int a,b;
    for(int i=0;i<m;i++){
        cin>>a>>b;
        if(val[a-1]<val[b-1]) graph[b].push_back(a);
        else graph[a].push_back(b);
    }
    sort(val.begin(),val.end());
    build(n);
    for(int i=0;i<n;){
        int now=i;
        while(now<n&&val[i].first==val[now].first){
            for(auto x:graph[val[now].second]){
                unite(val[now].second,x,val[now].first);
            }
            now++;
        }
        if(now==n) break;
        for(int j=i;j<now;j++){
            int mum=query(val[j].second);
            //cout<<val[j].second<<" "<<sum[mum]<<"\n";
            if(sum[mum]<val[now].first){
                for(auto x:nodes[mum]){
                    ans[x]=0;
                }
                nodes[mum].clear();
            }
        }
        i=now;
    }
    for(int i=1;i<=n;i++){
        if(ans[i]==-1) cout<<1;
        else cout<<0;
    }
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 2 ms 584 KB Output is correct
7 Correct 2 ms 596 KB Output is correct
8 Correct 1 ms 480 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 2 ms 596 KB Output is correct
12 Correct 1 ms 596 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 2 ms 596 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 142 ms 35972 KB Output is correct
4 Correct 138 ms 39164 KB Output is correct
5 Correct 172 ms 35776 KB Output is correct
6 Correct 191 ms 39212 KB Output is correct
7 Correct 189 ms 39336 KB Output is correct
8 Correct 142 ms 41696 KB Output is correct
9 Correct 133 ms 38464 KB Output is correct
10 Correct 75 ms 35376 KB Output is correct
11 Correct 137 ms 40656 KB Output is correct
12 Correct 165 ms 39716 KB Output is correct
13 Correct 126 ms 40168 KB Output is correct
14 Correct 127 ms 40364 KB Output is correct
15 Correct 128 ms 41676 KB Output is correct
16 Correct 117 ms 40604 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 320 KB Output is correct
2 Correct 277 ms 36280 KB Output is correct
3 Correct 261 ms 39728 KB Output is correct
4 Correct 151 ms 41728 KB Output is correct
5 Correct 133 ms 40124 KB Output is correct
6 Correct 281 ms 39728 KB Output is correct
7 Correct 164 ms 41724 KB Output is correct
8 Correct 169 ms 41776 KB Output is correct
9 Correct 100 ms 40628 KB Output is correct
10 Correct 115 ms 37948 KB Output is correct
11 Correct 147 ms 38228 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 253 ms 36048 KB Output is correct
3 Correct 250 ms 39212 KB Output is correct
4 Correct 303 ms 39408 KB Output is correct
5 Correct 312 ms 40048 KB Output is correct
6 Correct 274 ms 37756 KB Output is correct
7 Correct 157 ms 39196 KB Output is correct
8 Correct 99 ms 40512 KB Output is correct
9 Correct 98 ms 20992 KB Output is correct
10 Correct 297 ms 39684 KB Output is correct
11 Correct 162 ms 38212 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 2 ms 584 KB Output is correct
7 Correct 2 ms 596 KB Output is correct
8 Correct 1 ms 480 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 2 ms 596 KB Output is correct
12 Correct 1 ms 596 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 2 ms 596 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 142 ms 35972 KB Output is correct
18 Correct 138 ms 39164 KB Output is correct
19 Correct 172 ms 35776 KB Output is correct
20 Correct 191 ms 39212 KB Output is correct
21 Correct 189 ms 39336 KB Output is correct
22 Correct 142 ms 41696 KB Output is correct
23 Correct 133 ms 38464 KB Output is correct
24 Correct 75 ms 35376 KB Output is correct
25 Correct 137 ms 40656 KB Output is correct
26 Correct 165 ms 39716 KB Output is correct
27 Correct 126 ms 40168 KB Output is correct
28 Correct 127 ms 40364 KB Output is correct
29 Correct 128 ms 41676 KB Output is correct
30 Correct 117 ms 40604 KB Output is correct
31 Correct 1 ms 320 KB Output is correct
32 Correct 277 ms 36280 KB Output is correct
33 Correct 261 ms 39728 KB Output is correct
34 Correct 151 ms 41728 KB Output is correct
35 Correct 133 ms 40124 KB Output is correct
36 Correct 281 ms 39728 KB Output is correct
37 Correct 164 ms 41724 KB Output is correct
38 Correct 169 ms 41776 KB Output is correct
39 Correct 100 ms 40628 KB Output is correct
40 Correct 115 ms 37948 KB Output is correct
41 Correct 147 ms 38228 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 253 ms 36048 KB Output is correct
44 Correct 250 ms 39212 KB Output is correct
45 Correct 303 ms 39408 KB Output is correct
46 Correct 312 ms 40048 KB Output is correct
47 Correct 274 ms 37756 KB Output is correct
48 Correct 157 ms 39196 KB Output is correct
49 Correct 99 ms 40512 KB Output is correct
50 Correct 98 ms 20992 KB Output is correct
51 Correct 297 ms 39684 KB Output is correct
52 Correct 162 ms 38212 KB Output is correct
53 Correct 0 ms 212 KB Output is correct
54 Correct 1 ms 316 KB Output is correct
55 Correct 0 ms 212 KB Output is correct
56 Correct 1 ms 596 KB Output is correct
57 Correct 2 ms 596 KB Output is correct
58 Correct 1 ms 596 KB Output is correct
59 Correct 1 ms 588 KB Output is correct
60 Correct 1 ms 468 KB Output is correct
61 Correct 1 ms 724 KB Output is correct
62 Correct 2 ms 680 KB Output is correct
63 Correct 1 ms 588 KB Output is correct
64 Correct 2 ms 596 KB Output is correct
65 Correct 1 ms 596 KB Output is correct
66 Correct 1 ms 596 KB Output is correct
67 Correct 146 ms 39812 KB Output is correct
68 Correct 155 ms 40340 KB Output is correct
69 Correct 216 ms 38092 KB Output is correct
70 Correct 289 ms 39220 KB Output is correct
71 Correct 273 ms 39380 KB Output is correct
72 Correct 182 ms 41612 KB Output is correct
73 Correct 155 ms 38492 KB Output is correct
74 Correct 112 ms 35392 KB Output is correct
75 Correct 187 ms 40672 KB Output is correct
76 Correct 172 ms 39696 KB Output is correct
77 Correct 168 ms 40176 KB Output is correct
78 Correct 142 ms 40332 KB Output is correct
79 Correct 135 ms 41656 KB Output is correct
80 Correct 108 ms 40548 KB Output is correct
81 Correct 321 ms 39328 KB Output is correct
82 Correct 299 ms 39580 KB Output is correct
83 Correct 176 ms 41728 KB Output is correct
84 Correct 147 ms 40116 KB Output is correct
85 Correct 303 ms 39620 KB Output is correct
86 Correct 154 ms 41676 KB Output is correct
87 Correct 154 ms 41768 KB Output is correct
88 Correct 138 ms 37936 KB Output is correct
89 Correct 178 ms 38216 KB Output is correct
90 Correct 304 ms 39184 KB Output is correct
91 Correct 323 ms 39168 KB Output is correct
92 Correct 359 ms 39420 KB Output is correct
93 Correct 310 ms 40032 KB Output is correct
94 Correct 236 ms 37788 KB Output is correct
95 Correct 158 ms 39192 KB Output is correct
96 Correct 102 ms 40536 KB Output is correct
97 Correct 98 ms 21016 KB Output is correct
98 Correct 298 ms 39588 KB Output is correct
99 Correct 203 ms 38216 KB Output is correct
100 Correct 28 ms 4020 KB Output is correct
101 Correct 298 ms 39380 KB Output is correct
102 Correct 166 ms 31656 KB Output is correct
103 Correct 179 ms 33512 KB Output is correct
104 Correct 266 ms 38652 KB Output is correct