oj.uz

Submission #83255

# Submission time Handle Problem Language Result Execution time Memory
83255 2018-11-06T12:18:15 Z teomrn Pipes (BOI13_pipes) C++14
1.2963 / 100
 419 ms 132096 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long i64;
const int NMAX = 100010;

vector <pair <int, int>> adia[NMAX + 10];
int tata[NMAX + 10];
int taken[NMAX + 10];
int h[NMAX + 10];
bool ok = 1;
i64 ce_s_vrea[NMAX + 10];
int ans[5 * NMAX + 10];

vector <vector <int>> centers;

bool dfs(int nod, bool did)
{
    for (auto i : adia[nod]) {
        if (i.first == tata[nod])
            continue;
        if (tata[i.first]) {
            if (h[i.first] > h[nod])
                continue;
            if (did) {
                ok = 0;
                return 1;
            }
            vector <int> c;
            for (int j = nod; j != tata[i.first]; j = tata[j]) {
                if (taken[j]) {
                    ok = 0;
                    return 1;
                }
                taken[j] = 1;
                c.push_back(j);
            }
            centers.push_back(c);
            did = 1;
        }
        else {
            tata[i.first] = nod;
            h[i.first] = 1 + h[nod];
            did |= dfs(i.first, did);
            if (!ok)
                return 1;
        }
    }
    return did;
}

int solve_arb(int nod, int tata)
{
    int ce_tata;
    for (auto i : adia[nod]) {
        if (i.first != tata) {
            ans[i.second] = solve_arb(i.first, nod);
            ce_s_vrea[nod] -= ans[i.second];
        }
    }
    return ce_s_vrea[nod];
}

void solve_ciclu(vector <int> ciclu)
{
    vector <int> a(ciclu.size());
    vector <i64> s_st(ciclu.size()), s_dr(ciclu.size());

    int n = ciclu.size();

    if (n % 2 == 0) {
        ok = 0;
        return;
    }

    for (int i = 0; i < n; i++) {
        for (auto j : adia[ciclu[i]]) {
            if (j.first != ciclu[(i + 1) % n] && j.first != ciclu[(i + n - 1) % n]) {
                int x = solve_arb(j.first, ciclu[i]);
                ce_s_vrea[ciclu[i]] -= x;
                ans[j.second] = x;
            }
            else if (j.first == ciclu[(i + n - 1) % n])
                a[i] = j.second;
        }
    }
    i64 s_total = 0;
    for (auto i : ciclu)
        s_total += ce_s_vrea[i];

    if ((s_total & 1LL) || (s_total && n == 1)) {
        ok = 0;
        return;
    }

    s_st[0] = ce_s_vrea[ciclu[0]];
    for (int i = 1; i < n; i++)
        s_st[i] = ce_s_vrea[ciclu[i]] - s_st[i - 1];
    s_dr[n - 1] = ce_s_vrea[ciclu[n - 1]];
    for (int i = n - 2; i >= 0; i--)
        s_dr[i] = ce_s_vrea[ciclu[i]] - s_dr[i + 1];

    for (int i = 0; i < n; i++)
        ans[a[i]] = (s_st[i] + s_dr[i] - ce_s_vrea[ciclu[i]]) / 2;
}

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, m, a, b;

    cin >> n >> m;
    for (int i = 1; i <= n; i++)
        cin >> ce_s_vrea[i];

    for (int i = 1; i <= m; i++) {
        cin >> a >> b;
        adia[a].push_back({ b, i });
        adia[b].push_back({ a, i });
    }

    for (int i = 1; i <= n; i++) {
        if (!tata[i]) {
            tata[i] = -1;
            auto x = dfs(i, 0);
            if (!x)
            centers.push_back({ i });
        }
    }

    for (auto i : centers)
        solve_ciclu(i);



    if (!ok) {
        cout << 0 << '\n';
        return 0;
    }

    for (int i = 1; i <= m; i++)
        cout << ans[i] << '\n';

    return 0;
}

Compilation message

pipes.cpp: In function 'int solve_arb(int, int)':
pipes.cpp:54:9: warning: unused variable 'ce_tata' [-Wunused-variable]
     int ce_tata;
         ^~~~~~~

Subtask #1
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 2812 KB Output isn't correct
2 Incorrect 4 ms 2924 KB Output isn't correct
3 Incorrect 5 ms 3036 KB Output isn't correct
4 Incorrect 90 ms 10652 KB Output isn't correct
5 Incorrect 5 ms 10652 KB Output isn't correct
6 Incorrect 6 ms 10652 KB Output isn't correct
7 Incorrect 4 ms 10652 KB Output isn't correct
8 Incorrect 4 ms 10652 KB Output isn't correct
9 Incorrect 5 ms 10652 KB Output isn't correct
10 Incorrect 5 ms 10652 KB Output isn't correct
11 Incorrect 5 ms 10652 KB Output isn't correct
12 Incorrect 6 ms 10652 KB Output isn't correct
13 Incorrect 67 ms 10864 KB Output isn't correct
14 Incorrect 97 ms 13156 KB Output isn't correct
15 Incorrect 102 ms 15228 KB Output isn't correct
16 Incorrect 80 ms 15564 KB Output isn't correct
17 Incorrect 136 ms 18144 KB Output isn't correct
18 Incorrect 95 ms 19888 KB Output isn't correct
19 Incorrect 121 ms 27716 KB Output isn't correct
20 Incorrect 4 ms 27716 KB Output isn't correct
21 Incorrect 4 ms 27716 KB Output isn't correct
22 Incorrect 89 ms 27716 KB Output isn't correct
23 Incorrect 60 ms 27716 KB Output isn't correct
24 Incorrect 83 ms 27716 KB Output isn't correct
25 Incorrect 76 ms 27716 KB Output isn't correct

Subtask #2
1.2962962963 / 70.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 27716 KB Output isn't correct
2 Incorrect 6 ms 27716 KB Output isn't correct
3 Correct 87 ms 35172 KB Output is correct
4 Runtime error 349 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
5 Runtime error 238 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
6 Runtime error 419 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
7 Runtime error 4 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
8 Runtime error 5 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
9 Runtime error 4 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
10 Runtime error 131 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
11 Runtime error 129 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
12 Runtime error 131 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
13 Runtime error 132 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
14 Runtime error 4 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
15 Runtime error 5 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
16 Runtime error 4 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
17 Runtime error 4 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
18 Runtime error 159 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
19 Runtime error 147 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
20 Runtime error 125 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
21 Runtime error 133 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
22 Runtime error 4 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
23 Runtime error 74 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
24 Runtime error 95 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
25 Runtime error 78 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
26 Runtime error 340 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
27 Runtime error 275 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
28 Runtime error 203 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
29 Runtime error 322 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
30 Runtime error 103 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
31 Runtime error 121 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
32 Runtime error 78 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
33 Runtime error 75 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
34 Runtime error 285 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
35 Runtime error 319 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
36 Runtime error 209 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
37 Runtime error 410 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
38 Runtime error 120 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
39 Runtime error 91 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
40 Runtime error 91 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
41 Runtime error 85 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
42 Runtime error 291 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
43 Runtime error 282 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
44 Runtime error 220 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
45 Runtime error 321 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
46 Runtime error 106 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
47 Runtime error 84 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
48 Runtime error 104 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
49 Runtime error 61 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
50 Runtime error 371 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
51 Runtime error 345 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
52 Runtime error 323 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
53 Runtime error 372 ms 132096 KB Execution killed with signal 9 (could be triggered by violating memory limits)
54 Runtime error 101 ms 132096 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.