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Submission #1029980

# Submission time Handle Problem Language Result Execution time Memory
1029980 2024-07-21T15:20:29 Z hasan2006 Stranded Far From Home (BOI22_island) C++17
100 / 100
 415 ms 104636 KB 
#include <bits/stdc++.h>

using namespace std;

#define TL ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
#define rall(s) s.rbegin(),s.rend()
#define all(s) s.begin(),s.end()
#define pb push_back
#define se second
#define fi first
#define ll long long
#define ld long double
#define YES cout<<"YES\n"
#define Yes cout<<"Yes\n"
#define yes cout<<"yes\n"
#define NO cout<<"NO\n"
#define No cout<<"No\n"
#define no cout<<"no\n"


const int N = 5e5 + 9 , mod = 1e9 + 7;
ll a[N] , b[N] , dp[N] , c[N] , d[N] , p[N] , sz[N];
vector<int>v[N];
set<int>st[N];

ll get(int x){
    return (p[x] == x ? x : get(p[x]));
}

void join(int x , int y , int k){
    x = get(x);
    y = get(y);
    if(c[x] >= k){
        if(st[x].size() > st[y].size())
            swap(st[x] , st[y]);
        for(auto to : st[x])
            st[y].insert(to);
    }
    if(x != y){
        if(sz[x] > sz[y])
            swap( x, y) , swap(st[x] , st[y]);
        p[x] = y;
        sz[y] += sz[x];
        c[y] += c[x];
    }
}

void solve()
{
    ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mn = 1e18, mx = 0 ;
    cin>>n>>m;
    vector<pair<int,int>>vc;
    for(i = 1;i <= n; i++){
        cin>>a[i];
        p[i] = i , sz[i] = 1, c[i] = a[i] , st[i].insert(i);
        vc.pb({a[i] , i});
    }
    for(i = 1; i <= m; i++){
        cin>>l>>r;
        v[l].pb(r);
        v[r].pb(l);
    }
    sort(all(vc));
    for(auto o : vc){
        x = o.se ,  y =o.fi;
        //cout<<x<<" ";
        d[x] = 1;
        for(auto to : v[x])
            if(get(to) != get(x) && d[to] == 1)
                join(to , x , y);
    }
    for(i = 1; i <= n; i++)
        cout<<(st[get(i)].find(i) != st[get(i)].end());
}

int main(){
    TL;

    /*#ifndef ONLINE_JUDGE
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    #endif*/
    int t = 1;
    //cin>>t;
    while(t--)
     {
        solve();
     }
}
// Author : حسن

Compilation message

island.cpp: In function 'void solve()':
island.cpp:50:12: warning: unused variable 'q' [-Wunused-variable]
   50 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mn = 1e18, mx = 0 ;
      |            ^
island.cpp:50:20: warning: unused variable 'j' [-Wunused-variable]
   50 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mn = 1e18, mx = 0 ;
      |                    ^
island.cpp:50:38: warning: unused variable 's' [-Wunused-variable]
   50 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mn = 1e18, mx = 0 ;
      |                                      ^
island.cpp:50:46: warning: unused variable 'f' [-Wunused-variable]
   50 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mn = 1e18, mx = 0 ;
      |                                              ^
island.cpp:50:50: warning: unused variable 'k' [-Wunused-variable]
   50 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mn = 1e18, mx = 0 ;
      |                                                  ^
island.cpp:50:58: warning: unused variable 'mn' [-Wunused-variable]
   50 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mn = 1e18, mx = 0 ;
      |                                                          ^~
island.cpp:50:69: warning: unused variable 'mx' [-Wunused-variable]
   50 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mn = 1e18, mx = 0 ;
      |                                                                     ^~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 37464 KB Output is correct
2 Correct 12 ms 37464 KB Output is correct
3 Correct 12 ms 37468 KB Output is correct
4 Correct 12 ms 37844 KB Output is correct
5 Correct 14 ms 38000 KB Output is correct
6 Correct 12 ms 37720 KB Output is correct
7 Correct 13 ms 37720 KB Output is correct
8 Correct 12 ms 37724 KB Output is correct
9 Correct 16 ms 37720 KB Output is correct
10 Correct 13 ms 38028 KB Output is correct
11 Correct 15 ms 38028 KB Output is correct
12 Correct 16 ms 38040 KB Output is correct
13 Correct 11 ms 37720 KB Output is correct
14 Correct 15 ms 37976 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 37464 KB Output is correct
2 Correct 10 ms 37464 KB Output is correct
3 Correct 160 ms 74448 KB Output is correct
4 Correct 173 ms 73772 KB Output is correct
5 Correct 243 ms 84668 KB Output is correct
6 Correct 254 ms 87488 KB Output is correct
7 Correct 233 ms 86764 KB Output is correct
8 Correct 163 ms 75076 KB Output is correct
9 Correct 213 ms 96096 KB Output is correct
10 Correct 118 ms 65596 KB Output is correct
11 Correct 201 ms 74688 KB Output is correct
12 Correct 250 ms 72744 KB Output is correct
13 Correct 159 ms 73408 KB Output is correct
14 Correct 180 ms 73640 KB Output is correct
15 Correct 186 ms 75068 KB Output is correct
16 Correct 175 ms 73916 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 37464 KB Output is correct
2 Correct 280 ms 94800 KB Output is correct
3 Correct 261 ms 94120 KB Output is correct
4 Correct 245 ms 75052 KB Output is correct
5 Correct 157 ms 73464 KB Output is correct
6 Correct 264 ms 93596 KB Output is correct
7 Correct 229 ms 74944 KB Output is correct
8 Correct 247 ms 74912 KB Output is correct
9 Correct 164 ms 73972 KB Output is correct
10 Correct 147 ms 69704 KB Output is correct
11 Correct 159 ms 75712 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 37608 KB Output is correct
2 Correct 302 ms 79984 KB Output is correct
3 Correct 291 ms 83136 KB Output is correct
4 Correct 338 ms 90408 KB Output is correct
5 Correct 386 ms 100048 KB Output is correct
6 Correct 337 ms 85692 KB Output is correct
7 Correct 237 ms 75308 KB Output is correct
8 Correct 145 ms 73404 KB Output is correct
9 Correct 164 ms 57588 KB Output is correct
10 Correct 414 ms 104192 KB Output is correct
11 Correct 166 ms 75152 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 37464 KB Output is correct
2 Correct 12 ms 37464 KB Output is correct
3 Correct 12 ms 37468 KB Output is correct
4 Correct 12 ms 37844 KB Output is correct
5 Correct 14 ms 38000 KB Output is correct
6 Correct 12 ms 37720 KB Output is correct
7 Correct 13 ms 37720 KB Output is correct
8 Correct 12 ms 37724 KB Output is correct
9 Correct 16 ms 37720 KB Output is correct
10 Correct 13 ms 38028 KB Output is correct
11 Correct 15 ms 38028 KB Output is correct
12 Correct 16 ms 38040 KB Output is correct
13 Correct 11 ms 37720 KB Output is correct
14 Correct 15 ms 37976 KB Output is correct
15 Correct 13 ms 37464 KB Output is correct
16 Correct 10 ms 37464 KB Output is correct
17 Correct 160 ms 74448 KB Output is correct
18 Correct 173 ms 73772 KB Output is correct
19 Correct 243 ms 84668 KB Output is correct
20 Correct 254 ms 87488 KB Output is correct
21 Correct 233 ms 86764 KB Output is correct
22 Correct 163 ms 75076 KB Output is correct
23 Correct 213 ms 96096 KB Output is correct
24 Correct 118 ms 65596 KB Output is correct
25 Correct 201 ms 74688 KB Output is correct
26 Correct 250 ms 72744 KB Output is correct
27 Correct 159 ms 73408 KB Output is correct
28 Correct 180 ms 73640 KB Output is correct
29 Correct 186 ms 75068 KB Output is correct
30 Correct 175 ms 73916 KB Output is correct
31 Correct 13 ms 37464 KB Output is correct
32 Correct 280 ms 94800 KB Output is correct
33 Correct 261 ms 94120 KB Output is correct
34 Correct 245 ms 75052 KB Output is correct
35 Correct 157 ms 73464 KB Output is correct
36 Correct 264 ms 93596 KB Output is correct
37 Correct 229 ms 74944 KB Output is correct
38 Correct 247 ms 74912 KB Output is correct
39 Correct 164 ms 73972 KB Output is correct
40 Correct 147 ms 69704 KB Output is correct
41 Correct 159 ms 75712 KB Output is correct
42 Correct 14 ms 37608 KB Output is correct
43 Correct 302 ms 79984 KB Output is correct
44 Correct 291 ms 83136 KB Output is correct
45 Correct 338 ms 90408 KB Output is correct
46 Correct 386 ms 100048 KB Output is correct
47 Correct 337 ms 85692 KB Output is correct
48 Correct 237 ms 75308 KB Output is correct
49 Correct 145 ms 73404 KB Output is correct
50 Correct 164 ms 57588 KB Output is correct
51 Correct 414 ms 104192 KB Output is correct
52 Correct 166 ms 75152 KB Output is correct
53 Correct 13 ms 35676 KB Output is correct
54 Correct 13 ms 35700 KB Output is correct
55 Correct 13 ms 35676 KB Output is correct
56 Correct 19 ms 35932 KB Output is correct
57 Correct 14 ms 35928 KB Output is correct
58 Correct 18 ms 35944 KB Output is correct
59 Correct 16 ms 36188 KB Output is correct
60 Correct 14 ms 35960 KB Output is correct
61 Correct 18 ms 35928 KB Output is correct
62 Correct 19 ms 35960 KB Output is correct
63 Correct 18 ms 36188 KB Output is correct
64 Correct 15 ms 36196 KB Output is correct
65 Correct 15 ms 35932 KB Output is correct
66 Correct 15 ms 35880 KB Output is correct
67 Correct 188 ms 73916 KB Output is correct
68 Correct 165 ms 73404 KB Output is correct
69 Correct 229 ms 84204 KB Output is correct
70 Correct 308 ms 87208 KB Output is correct
71 Correct 281 ms 86460 KB Output is correct
72 Correct 206 ms 74600 KB Output is correct
73 Correct 211 ms 95680 KB Output is correct
74 Correct 107 ms 65216 KB Output is correct
75 Correct 213 ms 74468 KB Output is correct
76 Correct 218 ms 72400 KB Output is correct
77 Correct 191 ms 73116 KB Output is correct
78 Correct 179 ms 75076 KB Output is correct
79 Correct 214 ms 75056 KB Output is correct
80 Correct 173 ms 74036 KB Output is correct
81 Correct 304 ms 93964 KB Output is correct
82 Correct 301 ms 94148 KB Output is correct
83 Correct 205 ms 74972 KB Output is correct
84 Correct 145 ms 73540 KB Output is correct
85 Correct 296 ms 93628 KB Output is correct
86 Correct 193 ms 74896 KB Output is correct
87 Correct 192 ms 75064 KB Output is correct
88 Correct 190 ms 69568 KB Output is correct
89 Correct 192 ms 75708 KB Output is correct
90 Correct 280 ms 79812 KB Output is correct
91 Correct 282 ms 82988 KB Output is correct
92 Correct 349 ms 90364 KB Output is correct
93 Correct 408 ms 100432 KB Output is correct
94 Correct 317 ms 86056 KB Output is correct
95 Correct 229 ms 77244 KB Output is correct
96 Correct 159 ms 73932 KB Output is correct
97 Correct 144 ms 58564 KB Output is correct
98 Correct 415 ms 104636 KB Output is correct
99 Correct 184 ms 75436 KB Output is correct
100 Correct 39 ms 41904 KB Output is correct
101 Correct 365 ms 84392 KB Output is correct
102 Correct 242 ms 73148 KB Output is correct
103 Correct 314 ms 68684 KB Output is correct
104 Correct 295 ms 76480 KB Output is correct