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Submission #596679

# Submission time Handle Problem Language Result Execution time Memory
596679 2022-07-15T00:56:01 Z Deepesson Stranded Far From Home (BOI22_island) C++17
100 / 100
 768 ms 58120 KB 
#include <bits/stdc++.h>
#define MAX 205000

using ll = long long;

ll array[MAX];
ll pai[MAX];
ll size[MAX];

int find(int a){
    if(pai[a]==a)
        return a;
    return pai[a]=find(pai[a]);
}

void Union(int a,int b){
    a=find(a);
    b=find(b);
    if(a!=b){
        pai[a]=b;
        size[b]+=size[a];
        size[a]=0;
    }
}

bool answer[MAX];

typedef std::pair<ll,ll> pii;

std::map<ll,std::vector<pii>> eventos;

int main()
{
    for(int i=0;i!=MAX;++i)pai[i]=i;

    int N,M;
    std::cin>>N>>M;

    ///Corner case...
    if(N==1){
        std::cout<<"1\n";
        return 0;
    }

    for(int i=0;i!=N;++i){
        std::cin>>array[i];
        eventos[array[i]].push_back({1e9+1,i});
        size[i]=array[i];
    }

    ll soma = 0;
    for(auto&x:array)soma+=x;
    for(int i=0;i!=M;++i){
        int a,b;
        std::cin>>a>>b;--a;--b;
        int peso = std::max(array[a],array[b]);
        eventos[peso].push_back({a,b});
    }

    for(auto&x:eventos){
        std::sort(x.second.begin(),x.second.end());
        for(auto&y:x.second){
            if(y.first==1e9+1){///Consulta
                ll k = find(y.second);
                ll sum = size[k];
                ///Ve se aumentou
                if(sum!=x.first){
                    ///Sucesso
                    if(sum==soma){
                        answer[y.second]=true;
                    }else ///Ainda falta...
                    eventos[sum].push_back(y);
                }
            }else {///Unir :v
                Union(y.first,y.second);
            }
        }
    }

    for(int i=0;i!=N;++i)std::cout<<"01"[answer[i]];std::cout<<"\n";
}

Compilation message

island.cpp: In function 'int main()':
island.cpp:80:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   80 |     for(int i=0;i!=N;++i)std::cout<<"01"[answer[i]];std::cout<<"\n";
      |     ^~~
island.cpp:80:53: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   80 |     for(int i=0;i!=N;++i)std::cout<<"01"[answer[i]];std::cout<<"\n";
      |                                                     ^~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1876 KB Output is correct
2 Correct 1 ms 1876 KB Output is correct
3 Correct 1 ms 1876 KB Output is correct
4 Correct 4 ms 2324 KB Output is correct
5 Correct 4 ms 2260 KB Output is correct
6 Correct 3 ms 2004 KB Output is correct
7 Correct 4 ms 2260 KB Output is correct
8 Correct 4 ms 2132 KB Output is correct
9 Correct 3 ms 2004 KB Output is correct
10 Correct 4 ms 2260 KB Output is correct
11 Correct 4 ms 2316 KB Output is correct
12 Correct 4 ms 2260 KB Output is correct
13 Correct 3 ms 2132 KB Output is correct
14 Correct 3 ms 2132 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1876 KB Output is correct
2 Correct 1 ms 1876 KB Output is correct
3 Correct 533 ms 49312 KB Output is correct
4 Correct 190 ms 20788 KB Output is correct
5 Correct 567 ms 45900 KB Output is correct
6 Correct 503 ms 43116 KB Output is correct
7 Correct 589 ms 48672 KB Output is correct
8 Correct 246 ms 21544 KB Output is correct
9 Correct 419 ms 41232 KB Output is correct
10 Correct 220 ms 30392 KB Output is correct
11 Correct 206 ms 15960 KB Output is correct
12 Correct 201 ms 17316 KB Output is correct
13 Correct 183 ms 21412 KB Output is correct
14 Correct 201 ms 21924 KB Output is correct
15 Correct 544 ms 56072 KB Output is correct
16 Correct 330 ms 55264 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1876 KB Output is correct
2 Correct 768 ms 50344 KB Output is correct
3 Correct 727 ms 45144 KB Output is correct
4 Correct 229 ms 15196 KB Output is correct
5 Correct 193 ms 20108 KB Output is correct
6 Correct 729 ms 49512 KB Output is correct
7 Correct 589 ms 56012 KB Output is correct
8 Correct 574 ms 55796 KB Output is correct
9 Correct 337 ms 54308 KB Output is correct
10 Correct 266 ms 27624 KB Output is correct
11 Correct 252 ms 20848 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1876 KB Output is correct
2 Correct 253 ms 17680 KB Output is correct
3 Correct 282 ms 18972 KB Output is correct
4 Correct 260 ms 17420 KB Output is correct
5 Correct 228 ms 16176 KB Output is correct
6 Correct 229 ms 15948 KB Output is correct
7 Correct 258 ms 21616 KB Output is correct
8 Correct 214 ms 21636 KB Output is correct
9 Correct 165 ms 12976 KB Output is correct
10 Correct 230 ms 20156 KB Output is correct
11 Correct 205 ms 18592 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1876 KB Output is correct
2 Correct 1 ms 1876 KB Output is correct
3 Correct 1 ms 1876 KB Output is correct
4 Correct 4 ms 2324 KB Output is correct
5 Correct 4 ms 2260 KB Output is correct
6 Correct 3 ms 2004 KB Output is correct
7 Correct 4 ms 2260 KB Output is correct
8 Correct 4 ms 2132 KB Output is correct
9 Correct 3 ms 2004 KB Output is correct
10 Correct 4 ms 2260 KB Output is correct
11 Correct 4 ms 2316 KB Output is correct
12 Correct 4 ms 2260 KB Output is correct
13 Correct 3 ms 2132 KB Output is correct
14 Correct 3 ms 2132 KB Output is correct
15 Correct 2 ms 1876 KB Output is correct
16 Correct 1 ms 1876 KB Output is correct
17 Correct 533 ms 49312 KB Output is correct
18 Correct 190 ms 20788 KB Output is correct
19 Correct 567 ms 45900 KB Output is correct
20 Correct 503 ms 43116 KB Output is correct
21 Correct 589 ms 48672 KB Output is correct
22 Correct 246 ms 21544 KB Output is correct
23 Correct 419 ms 41232 KB Output is correct
24 Correct 220 ms 30392 KB Output is correct
25 Correct 206 ms 15960 KB Output is correct
26 Correct 201 ms 17316 KB Output is correct
27 Correct 183 ms 21412 KB Output is correct
28 Correct 201 ms 21924 KB Output is correct
29 Correct 544 ms 56072 KB Output is correct
30 Correct 330 ms 55264 KB Output is correct
31 Correct 1 ms 1876 KB Output is correct
32 Correct 768 ms 50344 KB Output is correct
33 Correct 727 ms 45144 KB Output is correct
34 Correct 229 ms 15196 KB Output is correct
35 Correct 193 ms 20108 KB Output is correct
36 Correct 729 ms 49512 KB Output is correct
37 Correct 589 ms 56012 KB Output is correct
38 Correct 574 ms 55796 KB Output is correct
39 Correct 337 ms 54308 KB Output is correct
40 Correct 266 ms 27624 KB Output is correct
41 Correct 252 ms 20848 KB Output is correct
42 Correct 1 ms 1876 KB Output is correct
43 Correct 253 ms 17680 KB Output is correct
44 Correct 282 ms 18972 KB Output is correct
45 Correct 260 ms 17420 KB Output is correct
46 Correct 228 ms 16176 KB Output is correct
47 Correct 229 ms 15948 KB Output is correct
48 Correct 258 ms 21616 KB Output is correct
49 Correct 214 ms 21636 KB Output is correct
50 Correct 165 ms 12976 KB Output is correct
51 Correct 230 ms 20156 KB Output is correct
52 Correct 205 ms 18592 KB Output is correct
53 Correct 1 ms 1876 KB Output is correct
54 Correct 2 ms 1876 KB Output is correct
55 Correct 1 ms 1876 KB Output is correct
56 Correct 5 ms 2260 KB Output is correct
57 Correct 5 ms 2260 KB Output is correct
58 Correct 3 ms 2028 KB Output is correct
59 Correct 4 ms 2260 KB Output is correct
60 Correct 5 ms 2260 KB Output is correct
61 Correct 3 ms 2060 KB Output is correct
62 Correct 4 ms 2260 KB Output is correct
63 Correct 4 ms 2332 KB Output is correct
64 Correct 4 ms 2232 KB Output is correct
65 Correct 3 ms 2132 KB Output is correct
66 Correct 3 ms 2004 KB Output is correct
67 Correct 574 ms 50032 KB Output is correct
68 Correct 190 ms 21028 KB Output is correct
69 Correct 575 ms 45364 KB Output is correct
70 Correct 544 ms 43192 KB Output is correct
71 Correct 557 ms 47180 KB Output is correct
72 Correct 249 ms 21172 KB Output is correct
73 Correct 417 ms 41204 KB Output is correct
74 Correct 245 ms 28540 KB Output is correct
75 Correct 201 ms 14680 KB Output is correct
76 Correct 202 ms 16676 KB Output is correct
77 Correct 188 ms 21292 KB Output is correct
78 Correct 197 ms 20796 KB Output is correct
79 Correct 563 ms 54864 KB Output is correct
80 Correct 323 ms 56184 KB Output is correct
81 Correct 763 ms 49320 KB Output is correct
82 Correct 644 ms 45528 KB Output is correct
83 Correct 239 ms 13392 KB Output is correct
84 Correct 186 ms 20936 KB Output is correct
85 Correct 748 ms 51652 KB Output is correct
86 Correct 557 ms 58120 KB Output is correct
87 Correct 586 ms 57988 KB Output is correct
88 Correct 282 ms 26988 KB Output is correct
89 Correct 215 ms 18576 KB Output is correct
90 Correct 266 ms 18224 KB Output is correct
91 Correct 273 ms 20308 KB Output is correct
92 Correct 273 ms 20428 KB Output is correct
93 Correct 237 ms 16212 KB Output is correct
94 Correct 219 ms 15336 KB Output is correct
95 Correct 246 ms 23568 KB Output is correct
96 Correct 189 ms 21208 KB Output is correct
97 Correct 164 ms 13316 KB Output is correct
98 Correct 205 ms 21668 KB Output is correct
99 Correct 205 ms 20008 KB Output is correct
100 Correct 123 ms 9324 KB Output is correct
101 Correct 638 ms 45732 KB Output is correct
102 Correct 217 ms 15224 KB Output is correct
103 Correct 543 ms 35144 KB Output is correct
104 Correct 712 ms 46012 KB Output is correct