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Submission #602199

# Submission time Handle Problem Language Result Execution time Memory
602199 2022-07-22T17:06:17 Z Vanilla Stranded Far From Home (BOI22_island) C++17
20 / 100
 1000 ms 46580 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long int64;
const int maxn = 4e5 + 2;
int a[maxn], dsu[maxn];
int64 sum[maxn];
vector <pair <int, int> > ad [maxn];
vector <int> comp [maxn];
int rs [maxn];

int dad (int x) {
    return dsu[x] = (x == dsu[x] ? x: dad(dsu[x]));
}

int main() {
    int n,m;
    cin >> n >> m;
    vector <pair <int, int> > v;
    for (int i = 1; i <= n; i++){
        cin >> a[i];
        dsu[i] = i;
        sum[i] = a[i];
        comp[i].push_back(i);
        v.push_back({a[i], i});
    }
    for (int i = 1; i <= m; i++){
        int x,y;
        cin >> x >> y;
        ad[x].push_back({a[y], y});
        ad[y].push_back({a[x], x});
    }
    set <pair <int, int> > s;
    sort(v.begin(), v.end());
    for (auto [val, x]: v) {
        sort(ad[x].rbegin(), ad[x].rend());
        while (!ad[x].empty() && ad[x].back().first <= val) {
            int y = ad[x].back().second;
            int p1 = dad(x), p2 = dad(y);
            // cout << x << " " << y << p1 << " " << p2 << "\n";
            if (val > sum[p2]) comp[p2].clear();
            if (p1 != p2) {
                dsu[p2] = p1;
                sum[p1] += sum[p2];
                if (comp[p1].size() < comp[p2].size()) swap(comp[p1], comp[p2]);
                for (int i: comp[p2]) comp[p1].push_back(i);
            }
            ad[x].pop_back();
        }
    }
    map <int, int> dd;
    for (int i = 1; i <= n; i++){
        if (!dd.count(dad(i))) {
            dd[i] = 1;
            for (int j: comp[dad(i)]) rs[j] = 1;
        }
    }
    for (int i = 1; i <= n; i++) cout << rs[i] << "";
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 19028 KB Output is correct
2 Correct 10 ms 19064 KB Output is correct
3 Correct 10 ms 19100 KB Output is correct
4 Correct 14 ms 19284 KB Output is correct
5 Correct 14 ms 19360 KB Output is correct
6 Correct 18 ms 19360 KB Output is correct
7 Correct 13 ms 19284 KB Output is correct
8 Correct 15 ms 19284 KB Output is correct
9 Correct 13 ms 19412 KB Output is correct
10 Correct 16 ms 19368 KB Output is correct
11 Correct 14 ms 19372 KB Output is correct
12 Correct 12 ms 19372 KB Output is correct
13 Correct 12 ms 19244 KB Output is correct
14 Correct 12 ms 19236 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 19112 KB Output is correct
2 Correct 10 ms 19080 KB Output is correct
3 Correct 302 ms 42004 KB Output is correct
4 Correct 252 ms 40900 KB Output is correct
5 Correct 315 ms 42292 KB Output is correct
6 Correct 316 ms 43500 KB Output is correct
7 Correct 314 ms 44288 KB Output is correct
8 Correct 354 ms 42856 KB Output is correct
9 Correct 289 ms 46580 KB Output is correct
10 Correct 258 ms 41092 KB Output is correct
11 Correct 267 ms 43500 KB Output is correct
12 Correct 307 ms 40744 KB Output is correct
13 Correct 277 ms 39736 KB Output is correct
14 Correct 260 ms 40676 KB Output is correct
15 Correct 299 ms 42364 KB Output is correct
16 Correct 221 ms 41536 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 19028 KB Output is correct
2 Execution timed out 1057 ms 43920 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 19032 KB Output is correct
2 Execution timed out 1071 ms 43004 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 19028 KB Output is correct
2 Correct 10 ms 19064 KB Output is correct
3 Correct 10 ms 19100 KB Output is correct
4 Correct 14 ms 19284 KB Output is correct
5 Correct 14 ms 19360 KB Output is correct
6 Correct 18 ms 19360 KB Output is correct
7 Correct 13 ms 19284 KB Output is correct
8 Correct 15 ms 19284 KB Output is correct
9 Correct 13 ms 19412 KB Output is correct
10 Correct 16 ms 19368 KB Output is correct
11 Correct 14 ms 19372 KB Output is correct
12 Correct 12 ms 19372 KB Output is correct
13 Correct 12 ms 19244 KB Output is correct
14 Correct 12 ms 19236 KB Output is correct
15 Correct 9 ms 19112 KB Output is correct
16 Correct 10 ms 19080 KB Output is correct
17 Correct 302 ms 42004 KB Output is correct
18 Correct 252 ms 40900 KB Output is correct
19 Correct 315 ms 42292 KB Output is correct
20 Correct 316 ms 43500 KB Output is correct
21 Correct 314 ms 44288 KB Output is correct
22 Correct 354 ms 42856 KB Output is correct
23 Correct 289 ms 46580 KB Output is correct
24 Correct 258 ms 41092 KB Output is correct
25 Correct 267 ms 43500 KB Output is correct
26 Correct 307 ms 40744 KB Output is correct
27 Correct 277 ms 39736 KB Output is correct
28 Correct 260 ms 40676 KB Output is correct
29 Correct 299 ms 42364 KB Output is correct
30 Correct 221 ms 41536 KB Output is correct
31 Correct 10 ms 19028 KB Output is correct
32 Execution timed out 1057 ms 43920 KB Time limit exceeded
33 Halted 0 ms 0 KB -