oj.uz

Submission #804951

# Submission time Handle Problem Language Result Execution time Memory
804951 2023-08-03T12:07:07 Z Khizri Stranded Far From Home (BOI22_island) C++17
100 / 100
 240 ms 38384 KB 
#pragma GCC optimize ("O3")
#include <bits/stdc++.h>
using namespace std;
//------------------------------DEFINE------------------------------
//******************************************************************
#define IOS ios_base::sync_with_stdio(false); cin.tie(0),cout.tie(0)
#define ll long long
#define pb push_back
#define F first
#define S second
#define INF 1e18
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define pii pair<int,int>
#define pll pair<ll,ll>
#define OK cout<<"Ok"<<endl;
#define MOD (ll)(1e9+7)
#define endl "\n"
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
//******************************************************************
//----------------------------FUNCTION------------------------------
//******************************************************************
ll gcd(ll a,ll b){
    if(a>b) swap(a,b);
    if(a==0) return a+b;
    return gcd(b%a,a);
}
ll lcm(ll a,ll b){
    return a/gcd(a,b)*b;
}
bool is_prime(ll n){
    ll k=sqrt(n);

    if(n==2) return true;
    if(n<2||n%2==0||k*k==n) return false;
    for(int i=3;i<=k;i+=2){
        if(n%i==0){
            return false;
        }
    }
    return true;
}
//*****************************************************************
//--------------------------MAIN-CODE------------------------------
const int mxn=2e5+5;
ll t=1,n,m,arr[mxn],p[mxn],sum[mxn],ans[mxn];
vector<int>vt[mxn];
vector<int>good[mxn];
int fnd(int u){
    if(p[u]==u) return u;
    return p[u]=fnd(p[u]);
}
void Union(int u,int v){
    u=fnd(u);
    v=fnd(v);
    if(u!=v){
        if(good[v].size()>good[u].size()) swap(u,v);
        sum[u]+=sum[v];
        p[v]=u;
        for(int x:good[v]){
            good[u].pb(x);
        }
    }
}
bool cmp(int x,int y){
    return arr[x]<arr[y];
}
void solve(){
    cin>>n>>m;
    for(int i=1;i<=n;i++){
        cin>>arr[i];
    }
    for(int i=1;i<=m;i++){
        int x,y;
        cin>>x>>y;
        vt[x].pb(y);
        vt[y].pb(x);
    }
    for(int i=1;i<=n;i++){
        sort(all(vt[i]),cmp);
        p[i]=i;
        sum[i]=arr[i];
        good[i].pb(i);
    }
    vector<int>idx(n);
    iota(all(idx),1);
    sort(all(idx),cmp);
    for(int i=0;i<idx.size();i++){
        int u=idx[i];
        for(int v:vt[u]){
            if(arr[v]>arr[u]) break;
            if(sum[fnd(v)]<arr[u]){
                good[fnd(v)].clear();
            }
            Union(u,v);
        }
    }
    int node=idx.back();
    for(int x:good[fnd(node)]){
        ans[x]=1;
    }
    for(int i=1;i<=n;i++){
        cout<<ans[i];
    }
    cout<<endl;
}
int main(){
    IOS;
    //cin>>t;
    while(t--){
        solve();
    }
    return 0;
}

Compilation message

island.cpp: In function 'void solve()':
island.cpp:88:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   88 |     for(int i=0;i<idx.size();i++){
      |                 ~^~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 6 ms 9732 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 6 ms 9940 KB Output is correct
5 Correct 6 ms 9940 KB Output is correct
6 Correct 8 ms 10004 KB Output is correct
7 Correct 6 ms 9916 KB Output is correct
8 Correct 6 ms 9812 KB Output is correct
9 Correct 7 ms 9940 KB Output is correct
10 Correct 6 ms 9940 KB Output is correct
11 Correct 9 ms 10000 KB Output is correct
12 Correct 6 ms 10004 KB Output is correct
13 Correct 6 ms 9872 KB Output is correct
14 Correct 6 ms 9900 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9672 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 160 ms 34648 KB Output is correct
4 Correct 151 ms 35080 KB Output is correct
5 Correct 150 ms 35748 KB Output is correct
6 Correct 162 ms 36480 KB Output is correct
7 Correct 180 ms 36512 KB Output is correct
8 Correct 192 ms 36456 KB Output is correct
9 Correct 120 ms 37280 KB Output is correct
10 Correct 98 ms 32184 KB Output is correct
11 Correct 129 ms 34500 KB Output is correct
12 Correct 172 ms 32944 KB Output is correct
13 Correct 116 ms 35200 KB Output is correct
14 Correct 164 ms 35152 KB Output is correct
15 Correct 153 ms 34852 KB Output is correct
16 Correct 81 ms 33908 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9684 KB Output is correct
2 Correct 155 ms 37424 KB Output is correct
3 Correct 185 ms 37536 KB Output is correct
4 Correct 124 ms 38344 KB Output is correct
5 Correct 135 ms 35320 KB Output is correct
6 Correct 240 ms 37608 KB Output is correct
7 Correct 127 ms 34780 KB Output is correct
8 Correct 120 ms 34852 KB Output is correct
9 Correct 80 ms 33844 KB Output is correct
10 Correct 157 ms 35232 KB Output is correct
11 Correct 156 ms 34388 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9684 KB Output is correct
2 Correct 192 ms 35360 KB Output is correct
3 Correct 215 ms 35824 KB Output is correct
4 Correct 160 ms 36756 KB Output is correct
5 Correct 186 ms 37516 KB Output is correct
6 Correct 179 ms 35148 KB Output is correct
7 Correct 128 ms 35524 KB Output is correct
8 Correct 93 ms 34680 KB Output is correct
9 Correct 87 ms 23836 KB Output is correct
10 Correct 220 ms 35192 KB Output is correct
11 Correct 156 ms 34520 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 6 ms 9732 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 6 ms 9940 KB Output is correct
5 Correct 6 ms 9940 KB Output is correct
6 Correct 8 ms 10004 KB Output is correct
7 Correct 6 ms 9916 KB Output is correct
8 Correct 6 ms 9812 KB Output is correct
9 Correct 7 ms 9940 KB Output is correct
10 Correct 6 ms 9940 KB Output is correct
11 Correct 9 ms 10000 KB Output is correct
12 Correct 6 ms 10004 KB Output is correct
13 Correct 6 ms 9872 KB Output is correct
14 Correct 6 ms 9900 KB Output is correct
15 Correct 6 ms 9672 KB Output is correct
16 Correct 6 ms 9684 KB Output is correct
17 Correct 160 ms 34648 KB Output is correct
18 Correct 151 ms 35080 KB Output is correct
19 Correct 150 ms 35748 KB Output is correct
20 Correct 162 ms 36480 KB Output is correct
21 Correct 180 ms 36512 KB Output is correct
22 Correct 192 ms 36456 KB Output is correct
23 Correct 120 ms 37280 KB Output is correct
24 Correct 98 ms 32184 KB Output is correct
25 Correct 129 ms 34500 KB Output is correct
26 Correct 172 ms 32944 KB Output is correct
27 Correct 116 ms 35200 KB Output is correct
28 Correct 164 ms 35152 KB Output is correct
29 Correct 153 ms 34852 KB Output is correct
30 Correct 81 ms 33908 KB Output is correct
31 Correct 6 ms 9684 KB Output is correct
32 Correct 155 ms 37424 KB Output is correct
33 Correct 185 ms 37536 KB Output is correct
34 Correct 124 ms 38344 KB Output is correct
35 Correct 135 ms 35320 KB Output is correct
36 Correct 240 ms 37608 KB Output is correct
37 Correct 127 ms 34780 KB Output is correct
38 Correct 120 ms 34852 KB Output is correct
39 Correct 80 ms 33844 KB Output is correct
40 Correct 157 ms 35232 KB Output is correct
41 Correct 156 ms 34388 KB Output is correct
42 Correct 7 ms 9684 KB Output is correct
43 Correct 192 ms 35360 KB Output is correct
44 Correct 215 ms 35824 KB Output is correct
45 Correct 160 ms 36756 KB Output is correct
46 Correct 186 ms 37516 KB Output is correct
47 Correct 179 ms 35148 KB Output is correct
48 Correct 128 ms 35524 KB Output is correct
49 Correct 93 ms 34680 KB Output is correct
50 Correct 87 ms 23836 KB Output is correct
51 Correct 220 ms 35192 KB Output is correct
52 Correct 156 ms 34520 KB Output is correct
53 Correct 6 ms 9684 KB Output is correct
54 Correct 7 ms 9684 KB Output is correct
55 Correct 6 ms 9736 KB Output is correct
56 Correct 8 ms 9940 KB Output is correct
57 Correct 6 ms 9912 KB Output is correct
58 Correct 8 ms 9940 KB Output is correct
59 Correct 6 ms 9940 KB Output is correct
60 Correct 6 ms 9868 KB Output is correct
61 Correct 7 ms 9872 KB Output is correct
62 Correct 6 ms 9940 KB Output is correct
63 Correct 6 ms 9940 KB Output is correct
64 Correct 5 ms 9940 KB Output is correct
65 Correct 5 ms 9940 KB Output is correct
66 Correct 5 ms 9908 KB Output is correct
67 Correct 104 ms 34704 KB Output is correct
68 Correct 176 ms 35072 KB Output is correct
69 Correct 172 ms 35908 KB Output is correct
70 Correct 133 ms 36572 KB Output is correct
71 Correct 167 ms 36508 KB Output is correct
72 Correct 212 ms 36436 KB Output is correct
73 Correct 103 ms 37284 KB Output is correct
74 Correct 106 ms 32216 KB Output is correct
75 Correct 122 ms 34536 KB Output is correct
76 Correct 188 ms 32880 KB Output is correct
77 Correct 109 ms 35236 KB Output is correct
78 Correct 174 ms 35196 KB Output is correct
79 Correct 99 ms 34764 KB Output is correct
80 Correct 87 ms 34076 KB Output is correct
81 Correct 200 ms 37400 KB Output is correct
82 Correct 182 ms 37460 KB Output is correct
83 Correct 114 ms 38384 KB Output is correct
84 Correct 117 ms 35320 KB Output is correct
85 Correct 166 ms 37552 KB Output is correct
86 Correct 144 ms 34792 KB Output is correct
87 Correct 185 ms 34792 KB Output is correct
88 Correct 116 ms 35256 KB Output is correct
89 Correct 174 ms 34308 KB Output is correct
90 Correct 188 ms 35244 KB Output is correct
91 Correct 153 ms 35904 KB Output is correct
92 Correct 198 ms 36672 KB Output is correct
93 Correct 235 ms 37488 KB Output is correct
94 Correct 213 ms 35152 KB Output is correct
95 Correct 125 ms 35568 KB Output is correct
96 Correct 92 ms 34628 KB Output is correct
97 Correct 106 ms 23856 KB Output is correct
98 Correct 189 ms 35232 KB Output is correct
99 Correct 171 ms 34452 KB Output is correct
100 Correct 47 ms 13980 KB Output is correct
101 Correct 191 ms 35964 KB Output is correct
102 Correct 178 ms 30592 KB Output is correct
103 Correct 177 ms 31092 KB Output is correct
104 Correct 184 ms 34696 KB Output is correct