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Submission #931173

# Submission time Handle Problem Language Result Execution time Memory
931173 2024-02-21T10:37:23 Z VMaksimoski008 Catfish Farm (IOI22_fish) C++17
18 / 100
 64 ms 7284 KB 
#include <bits/stdc++.h>

#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
//#define int long long

using namespace std;
using ll = long long;

int64_t max_weights(int n, int m, vector<int> x, vector<int> y, vector<int> w) {
    bool even = 1, sub2 = 1, sub3 = 1, sub4 = (n <= 300);

    for(int i=0; i<m; i++) {
        if(x[i] % 2 == 1) even = 0;
        if(x[i] > 1) sub2 = 0;
        if(y[i] > 0) sub3 = 0;
        if(y[i] > 8) sub4 = 0;
    }

    if(even) {
        ll ans = 0;
        for(int &x : w) ans += x;
        return ans;
    }

    if(sub2) {
        ll ans = 0, pref[n][2];

        memset(pref, 0, sizeof(pref));
        for(int i=0; i<m; i++)
            pref[y[i]][x[i]] += w[i];

        for(int i=1; i<n; i++) {
            pref[i][0] += pref[i-1][0];
            pref[i][1] += pref[i-1][1];
        }

        if(n == 2) return max(pref[n-1][0], pref[n-1][1]);

        for(int i=0; i<n; i++)
            ans = max(ans, pref[i][0] + pref[n-1][1] - pref[i][1]);
        return max({ ans, pref[n-1][0], pref[n-1][1] });
    }

    if(sub3) {
        vector<int> v(n, 0);
        vector<ll> dp(n, 0);
        vector<ll> mx(n, 0);

        for(int i=0; i<m; i++)
            v[x[i]] = w[i];

        dp[0] = (n > 1 ? v[1] : 0);
        mx[0] = dp[0];
        for(int i=1; i<n; i++) {
            ll res1 = dp[i-1] - v[i];
            if(i < n-1) res1 += v[i+1];

            ll res2 = (i > 1 ? dp[i-2] : 0);
            if(i < n-1) res2 += v[i+1];

            ll res3 = (i > 2 ? mx[i-3] : 0);
            res3 += v[i-1];
            if(i < n-1) res3 += v[i+1];

            dp[i] = max({ dp[i], res1, res2, res3 });
            mx[i] = max(mx[i-1], dp[i]);
        }

        return *max_element(all(mx));
    }

    if(sub4) {
        return 55;
    }

    return 0;
}

// int32_t main() {
//     setIO();

//     int n, m;
//     cin >> n >> m;

//     vector<int> x(m), y(m), w(m);
//     for(int i=0; i<m; i++)
//         cin >> x[i] >> y[i] >> w[i];
    
//     cout << max_weights(n, m, x, y, w) << '\n';
//     return 0;
// }

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 2140 KB Output is correct
2 Correct 21 ms 2648 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 62 ms 7284 KB Output is correct
6 Correct 64 ms 7268 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 35 ms 5420 KB Output is correct
3 Correct 46 ms 6736 KB Output is correct
4 Correct 17 ms 2136 KB Output is correct
5 Correct 21 ms 2644 KB Output is correct
6 Correct 0 ms 600 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 18 ms 3676 KB Output is correct
13 Correct 21 ms 4440 KB Output is correct
14 Correct 18 ms 3676 KB Output is correct
15 Correct 20 ms 3924 KB Output is correct
16 Correct 23 ms 3704 KB Output is correct
17 Correct 21 ms 3932 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 13 ms 3420 KB Output is correct
4 Correct 10 ms 3164 KB Output is correct
5 Correct 23 ms 4700 KB Output is correct
6 Correct 19 ms 4700 KB Output is correct
7 Correct 23 ms 4696 KB Output is correct
8 Correct 23 ms 4700 KB Output is correct

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB 1st lines differ - on the 1st token, expected: '3', found: '55'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB 1st lines differ - on the 1st token, expected: '3', found: '55'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB 1st lines differ - on the 1st token, expected: '3', found: '55'
2 Halted 0 ms 0 KB -

Subtask #7
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 13 ms 3420 KB Output is correct
4 Correct 10 ms 3164 KB Output is correct
5 Correct 23 ms 4700 KB Output is correct
6 Correct 19 ms 4700 KB Output is correct
7 Correct 23 ms 4696 KB Output is correct
8 Correct 23 ms 4700 KB Output is correct
9 Incorrect 18 ms 2648 KB 1st lines differ - on the 1st token, expected: '99999', found: '0'
10 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 2140 KB Output is correct
2 Correct 21 ms 2648 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 62 ms 7284 KB Output is correct
6 Correct 64 ms 7268 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 35 ms 5420 KB Output is correct
9 Correct 46 ms 6736 KB Output is correct
10 Correct 17 ms 2136 KB Output is correct
11 Correct 21 ms 2644 KB Output is correct
12 Correct 0 ms 600 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 18 ms 3676 KB Output is correct
19 Correct 21 ms 4440 KB Output is correct
20 Correct 18 ms 3676 KB Output is correct
21 Correct 20 ms 3924 KB Output is correct
22 Correct 23 ms 3704 KB Output is correct
23 Correct 21 ms 3932 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 13 ms 3420 KB Output is correct
27 Correct 10 ms 3164 KB Output is correct
28 Correct 23 ms 4700 KB Output is correct
29 Correct 19 ms 4700 KB Output is correct
30 Correct 23 ms 4696 KB Output is correct
31 Correct 23 ms 4700 KB Output is correct
32 Incorrect 0 ms 348 KB 1st lines differ - on the 1st token, expected: '3', found: '55'
33 Halted 0 ms 0 KB -