Submission #677758

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
677758	2023-01-04T10:03:38 Z	dooompy	Pipes (BOI13_pipes)	C++17	72.7778 / 100	1000 ms	17740 KB

pipes

#include "bits/stdc++.h"

using namespace std;

void abc() {cout << endl;}
template <typename T, typename ...U> void abc(T a, U ...b) {
    cout << a << ' ', abc(b...);
}
template <typename T> void printv(T l, T r) {
    while (l != r) cout << *l << " \n"[++l == r];
}
template <typename A, typename B> istream& operator >> (istream& o, pair<A, B> &a) {
    return o >> a.first >> a.second;
}
template <typename A, typename B> ostream& operator << (ostream& o, pair<A, B> a) {
    return o << '(' << a.first << ", " << a.second << ')';
}
template <typename T> ostream& operator << (ostream& o, vector<T> a) {
    bool is = false;
    for (T i : a) {o << (is ? ' ' : '{'), is = true, o << i;}
    return o << '}';
}

#ifdef local
#define test(args...) abc("[" + string(#args) + "]", args)
#else
#define test(args...) void(0)
#endif

using ll = long long;

ll v[100005];
int deg[100005];

vector<pair<int, int>> adj[100005];
ll calc[500005];

bool seen[100005];

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
//    freopen("", "r", stdin);
//    freopen("", "w", stdout);
    int n, m; cin >> n >> m;
    for (int i = 1; i <= n; i++) cin >> v[i];
    for (int i = 1; i <= m; i++) {
        int a, b; cin >> a >> b;
        adj[a].push_back({b, i});
        adj[b].push_back({a, i});
        deg[a]++; deg[b]++;
    }

    queue<int> q;

    for (int i = 1; i <= n; i++) {
        if (deg[i] == 1) {
            q.push(i);
        }
    }

    while (!q.empty()) {
        // deg 1
        auto cur = q.front(); q.pop();
        seen[cur] = true;
        deg[cur] = 0;

        for (auto to : adj[cur]) {
            if (seen[to.first]) continue;
            ll weight = v[cur];

            v[to.first] -= weight;
            calc[to.second] = weight;

            if (--deg[to.first] == 1) {
                q.push(to.first);
            }
        }
    }

    if (m == n - 1) {
        for (int i = 1; i <= m; i++) {
            cout << calc[i] * 2 << "\n";
        }
        return 0;
    }

    if (m > n || m % 2 == 0) {
        cout << 0 << endl;
        return 0;
    }

    for (int i = 1; i <= n; i++) {
        while (true) {}
    }
}

Subtask #1

30.0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	2644 KB	Output is correct
2	Correct	1 ms	2644 KB	Output is correct
3	Correct	2 ms	2644 KB	Output is correct
4	Correct	51 ms	9084 KB	Output is correct
5	Correct	2 ms	2644 KB	Output is correct
6	Correct	2 ms	2644 KB	Output is correct
7	Correct	2 ms	2644 KB	Output is correct
8	Correct	2 ms	2644 KB	Output is correct
9	Correct	2 ms	2644 KB	Output is correct
10	Correct	2 ms	2644 KB	Output is correct
11	Correct	2 ms	2644 KB	Output is correct
12	Correct	2 ms	2644 KB	Output is correct
13	Correct	40 ms	7724 KB	Output is correct
14	Correct	48 ms	8652 KB	Output is correct
15	Correct	59 ms	9036 KB	Output is correct
16	Correct	47 ms	8160 KB	Output is correct
17	Correct	55 ms	9060 KB	Output is correct
18	Correct	52 ms	9120 KB	Output is correct
19	Correct	51 ms	8336 KB	Output is correct
20	Correct	2 ms	2644 KB	Output is correct
21	Correct	2 ms	2644 KB	Output is correct
22	Correct	58 ms	9044 KB	Output is correct
23	Correct	42 ms	7764 KB	Output is correct
24	Correct	54 ms	9064 KB	Output is correct
25	Correct	41 ms	7944 KB	Output is correct

Subtask #2

42.7777777778 / 70.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	2 ms	2644 KB	Output isn't correct
2	Incorrect	2 ms	2644 KB	Output isn't correct
3	Correct	38 ms	8004 KB	Output is correct
4	Correct	52 ms	7952 KB	Output is correct
5	Correct	41 ms	8308 KB	Output is correct
6	Correct	148 ms	17732 KB	Output is correct
7	Incorrect	1 ms	2644 KB	Output isn't correct
8	Execution timed out	1080 ms	2644 KB	Time limit exceeded
9	Correct	2 ms	2644 KB	Output is correct
10	Correct	2 ms	2644 KB	Output is correct
11	Correct	2 ms	2644 KB	Output is correct
12	Correct	1 ms	2644 KB	Output is correct
13	Correct	2 ms	2644 KB	Output is correct
14	Incorrect	2 ms	2644 KB	Output isn't correct
15	Incorrect	2 ms	2644 KB	Output isn't correct
16	Execution timed out	1084 ms	2644 KB	Time limit exceeded
17	Correct	2 ms	2644 KB	Output is correct
18	Correct	2 ms	2644 KB	Output is correct
19	Correct	2 ms	2644 KB	Output is correct
20	Correct	2 ms	2644 KB	Output is correct
21	Correct	2 ms	2772 KB	Output is correct
22	Incorrect	2 ms	2644 KB	Output isn't correct
23	Execution timed out	1091 ms	7024 KB	Time limit exceeded
24	Incorrect	43 ms	8200 KB	Output isn't correct
25	Correct	39 ms	7944 KB	Output is correct
26	Correct	41 ms	8080 KB	Output is correct
27	Correct	37 ms	7920 KB	Output is correct
28	Correct	40 ms	8500 KB	Output is correct
29	Correct	125 ms	15564 KB	Output is correct
30	Incorrect	51 ms	7760 KB	Output isn't correct
31	Execution timed out	1088 ms	7920 KB	Time limit exceeded
32	Execution timed out	1088 ms	8492 KB	Time limit exceeded
33	Correct	42 ms	8152 KB	Output is correct
34	Correct	37 ms	7884 KB	Output is correct
35	Correct	38 ms	8016 KB	Output is correct
36	Correct	47 ms	8288 KB	Output is correct
37	Correct	143 ms	17740 KB	Output is correct
38	Incorrect	42 ms	7932 KB	Output isn't correct
39	Execution timed out	1092 ms	8484 KB	Time limit exceeded
40	Incorrect	42 ms	8268 KB	Output isn't correct
41	Execution timed out	1088 ms	8012 KB	Time limit exceeded
42	Correct	47 ms	7744 KB	Output is correct
43	Correct	34 ms	7828 KB	Output is correct
44	Correct	47 ms	8348 KB	Output is correct
45	Correct	110 ms	15540 KB	Output is correct
46	Incorrect	42 ms	7756 KB	Output isn't correct
47	Incorrect	41 ms	8268 KB	Output isn't correct
48	Execution timed out	1093 ms	7900 KB	Time limit exceeded
49	Correct	38 ms	8268 KB	Output is correct
50	Correct	40 ms	8144 KB	Output is correct
51	Correct	40 ms	8272 KB	Output is correct
52	Correct	43 ms	7920 KB	Output is correct
53	Correct	132 ms	15480 KB	Output is correct
54	Incorrect	41 ms	8004 KB	Output isn't correct