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Submission #328780

# Submission time Handle Problem Language Result Execution time Memory
328780 2020-11-18T04:48:18 Z thecodingwizard Sailing Race (CEOI12_race) C++11
40 / 100
 83 ms 2540 KB 
#include <bits/stdc++.h>

using namespace std;

using ll = long long;
#define ii pair<int, int>
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define all(x) x.begin(), x.end()
#define F0R(i, n) for (int i = 0; i < n; i++)
#define FOR(i, a, b) for (int i = a; i < b; i++)
#define inf 1000000010

#define maxn 500
int n, k; 
vector<int> adj[maxn];

int memo[maxn][maxn][2];
int dp(int x, int y, bool onY) {
    if (memo[x][y][onY] != -1) return memo[x][y][onY];
    int best = 1;

    for (int i : adj[onY ? y : x]) {
        if (x < y) {
            if (x < i && i < y) {
                best = max(best, 1 + max(dp(x, i, 1), dp(i, y, 0)));
            }
        } else {
            if (i > x || i < y) {
                best = max(best, 1 + max(dp(x, i, 1), dp(i, y, 0)));
            }
        }
    }

    return memo[x][y][onY] = best;
}

int main() {
    cin.tie(0)->sync_with_stdio(0);

    cin >> n >> k; assert(!k);
    F0R(i, n) {
        int x;
        while (cin >> x && x != 0) {
            --x;
            adj[i].pb(x);
        }
    }

    int best = -1, bestIdx = -1;

    F0R(i, n) F0R(j, n) F0R(k, 2) memo[i][j][k] = -1;

    F0R(i, n) {
        for (int j : adj[i]) {
            int val = max(dp(i, j, 1), dp(j, i, 0));
            if (best < val) {
                best = val;
                bestIdx = i;
            }
        }
    }

    cout << best << endl;
    cout << bestIdx+1 << endl;

    return 0;
}

Subtask #1
40.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 396 KB Output is correct
2 Runtime error 1 ms 640 KB Execution killed with signal 6 (could be triggered by violating memory limits)
3 Runtime error 1 ms 492 KB Execution killed with signal 6 (could be triggered by violating memory limits)
4 Runtime error 1 ms 492 KB Execution killed with signal 6 (could be triggered by violating memory limits)
5 Correct 1 ms 492 KB Output is correct
6 Runtime error 1 ms 492 KB Execution killed with signal 6 (could be triggered by violating memory limits)
7 Correct 5 ms 620 KB Output is correct
8 Runtime error 2 ms 492 KB Execution killed with signal 6 (could be triggered by violating memory limits)
9 Correct 5 ms 748 KB Output is correct
10 Correct 15 ms 876 KB Output is correct
11 Correct 8 ms 748 KB Output is correct
12 Runtime error 1 ms 620 KB Execution killed with signal 6 (could be triggered by violating memory limits)
13 Runtime error 1 ms 620 KB Execution killed with signal 6 (could be triggered by violating memory limits)
14 Correct 63 ms 2028 KB Output is correct
15 Runtime error 1 ms 620 KB Execution killed with signal 6 (could be triggered by violating memory limits)
16 Runtime error 1 ms 620 KB Execution killed with signal 6 (could be triggered by violating memory limits)
17 Runtime error 1 ms 620 KB Execution killed with signal 6 (could be triggered by violating memory limits)
18 Correct 83 ms 2540 KB Output is correct
19 Runtime error 1 ms 620 KB Execution killed with signal 6 (could be triggered by violating memory limits)
20 Runtime error 1 ms 620 KB Execution killed with signal 6 (could be triggered by violating memory limits)