oj.uz

Submission #1114336

# Submission time Handle Problem Language Result Execution time Memory
1114336 2024-11-18T15:30:27 Z Mike_Vu Catfish Farm (IOI22_fish) C++17
100 / 100
 121 ms 32616 KB 
#ifndef mikevui
//    #include "task.h"
#endif // mikevui

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double dou;
#define pii pair<int, int>
#define fi first
#define se second
#define pb push_back
#define MASK(x) (1LL<<(x))
#define BITj(x, j) (((x)>>(j))&1)

template<typename T> bool maximize(T &x, const T &y) {
    if (x < y) {x = y; return 1;}
    return 0;
}
template<typename T> bool minimize(T &x, const T &y) {
    if (x > y) {x = y; return 1;}
    return 0;
}

const int maxn = 1e5+5;
const ll INF = (ll)3e18+7;
int n, m;
vector<pii> a[maxn];
vector<ll> dp1[maxn], dp0[maxn];
ll ans = 0;

ll max_weights(int N, int M, vector<int> X, vector<int> Y, vector<int> W) {
    n = N;
    m = M;
    for (int i= 0 ;i < m ;i++) {
        int x = X[i]+1, y = Y[i]+1, w = W[i];
        a[x].pb({y, w});
    }
    for (int i = 1; i <= n; i++) {
        sort(a[i].begin(), a[i].end());
    }
    ll ma10, ma11, ma0;
    ma10 = ma11 = ma0 = 0;
    //dp
    for (int pos= 1; pos <= n; pos++) {
        //init
        dp1[pos].assign((int)a[pos].size(), -INF);
        dp0[pos].assign((int)a[pos].size(), -INF);
        int len = (int)a[pos].size();
        //inc -> 0
        if (pos < n) {
            int j = -1;
            ll malas = 0;
            for (int i = 0; i < len; i++) {
                dp0[pos][i] = max(ma10, ma0);
                if (i > 0) maximize(dp0[pos][i], dp0[pos][i-1]);
                if (pos > 1) {
                    while (j+1 < (int)a[pos-1].size() && a[pos-1][j+1].fi < a[pos][i].fi) {
                        ++j;
                        maximize(malas, dp0[pos-1][j]);
                    }
                    if (j > -1 && a[pos-1][j].fi < a[pos][i].fi) {
                        maximize(dp0[pos][i], malas);
                    }
                }
                dp0[pos][i] += a[pos][i].se;
            }
        }
        //dec -> 1
        if (pos > 1) {
            int j = (int)a[pos-1].size();
            ll malas = 0;
            for (int i = len-1; i >= 0; i--) {
                dp1[pos][i] = max(ma11, ma0);
                if (i < len-1) maximize(dp1[pos][i], dp1[pos][i+1]);
                while (j-1 >= 0 && a[pos-1][j-1].fi > a[pos][i].fi) {
                    --j;
                    maximize(malas, dp1[pos-1][j]);
                }
                if (j < (int)a[pos-1].size() && a[pos-1][j].fi > a[pos][i].fi) {
                    maximize(dp1[pos][i], malas);
                }
                dp1[pos][i] += a[pos][i].se;
            }
        }
        //update ma
        for (int i = 0; i < len; i++) {
            maximize(ma10, dp1[pos][i]);
            maximize(ans, dp1[pos][i]);
            maximize(ans, dp0[pos][i]);
        }
        if (pos > 1) {
            for (int i = 0; i < (int)a[pos-1].size(); i++) {
                maximize(ma11, dp1[pos-1][i]);
                maximize(ma0, dp0[pos-1][i]);
            }
        }
    }
//    for (int pos = 1; pos <= n; pos++) {
//        cout << "curpos " << pos << "\n";
//        for (int i= 0; i < (int)a[pos].size(); i++) {
//            cout << a[pos][i].fi << ' ' << a[pos][i].se << ' ' << (dp0[pos][i] <= -INF ? -1 : dp0[pos][i]) << ' ' << (dp1[pos][i] <= -INF ? -1 : dp1[pos][i]) << "\n";
//        }
//    }
    return ans;
}

#ifdef mikevui
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
//    #define name "task"
//    if (fopen(name".inp", "r")) {
//        freopen(name".inp", "r", stdin);
//        freopen(name".out", "w", stdout);
//    }
    int N, M;
    vector<int> X, Y, W;
    cin >> N >> M;
    for (int i = 0; i < M; i++) {
        int x, y, w;
        cin >> x >> y >> w;
        X.pb(x);
        Y.pb(y);
        W.pb(w);
    }
    cout << max_weights(N, M, X, Y, W);
}
#endif // mikevui
/*
3 3
2 1 5
1 2 1
1 0 2
6

5 4
0 2 5
1 1 2
4 4 1
3 3 3
*/

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 12344 KB Output is correct
2 Correct 33 ms 13244 KB Output is correct
3 Correct 4 ms 7248 KB Output is correct
4 Correct 4 ms 7248 KB Output is correct
5 Correct 94 ms 26540 KB Output is correct
6 Correct 98 ms 29512 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7248 KB Output is correct
2 Correct 53 ms 17308 KB Output is correct
3 Correct 61 ms 20148 KB Output is correct
4 Correct 26 ms 12228 KB Output is correct
5 Correct 30 ms 12228 KB Output is correct
6 Correct 3 ms 7248 KB Output is correct
7 Correct 2 ms 7248 KB Output is correct
8 Correct 2 ms 7248 KB Output is correct
9 Correct 2 ms 7248 KB Output is correct
10 Correct 3 ms 7248 KB Output is correct
11 Correct 3 ms 7248 KB Output is correct
12 Correct 27 ms 12212 KB Output is correct
13 Correct 32 ms 13880 KB Output is correct
14 Correct 26 ms 12372 KB Output is correct
15 Correct 29 ms 13524 KB Output is correct
16 Correct 26 ms 12740 KB Output is correct
17 Correct 29 ms 12740 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7248 KB Output is correct
2 Correct 3 ms 7248 KB Output is correct
3 Correct 24 ms 14408 KB Output is correct
4 Correct 22 ms 12104 KB Output is correct
5 Correct 43 ms 20808 KB Output is correct
6 Correct 42 ms 19800 KB Output is correct
7 Correct 42 ms 20656 KB Output is correct
8 Correct 45 ms 20040 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7248 KB Output is correct
2 Correct 3 ms 7248 KB Output is correct
3 Correct 3 ms 7416 KB Output is correct
4 Correct 3 ms 7248 KB Output is correct
5 Correct 4 ms 7248 KB Output is correct
6 Correct 3 ms 7248 KB Output is correct
7 Correct 3 ms 7248 KB Output is correct
8 Correct 2 ms 7248 KB Output is correct
9 Correct 3 ms 7672 KB Output is correct
10 Correct 3 ms 7504 KB Output is correct
11 Correct 3 ms 7504 KB Output is correct
12 Correct 3 ms 7504 KB Output is correct
13 Correct 3 ms 7504 KB Output is correct
14 Correct 3 ms 7668 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7248 KB Output is correct
2 Correct 3 ms 7248 KB Output is correct
3 Correct 3 ms 7416 KB Output is correct
4 Correct 3 ms 7248 KB Output is correct
5 Correct 4 ms 7248 KB Output is correct
6 Correct 3 ms 7248 KB Output is correct
7 Correct 3 ms 7248 KB Output is correct
8 Correct 2 ms 7248 KB Output is correct
9 Correct 3 ms 7672 KB Output is correct
10 Correct 3 ms 7504 KB Output is correct
11 Correct 3 ms 7504 KB Output is correct
12 Correct 3 ms 7504 KB Output is correct
13 Correct 3 ms 7504 KB Output is correct
14 Correct 3 ms 7668 KB Output is correct
15 Correct 3 ms 7504 KB Output is correct
16 Correct 3 ms 7504 KB Output is correct
17 Correct 14 ms 10316 KB Output is correct
18 Correct 16 ms 10576 KB Output is correct
19 Correct 16 ms 10676 KB Output is correct
20 Correct 15 ms 10744 KB Output is correct
21 Correct 17 ms 10432 KB Output is correct
22 Correct 28 ms 13648 KB Output is correct
23 Correct 6 ms 8016 KB Output is correct
24 Correct 12 ms 9296 KB Output is correct
25 Correct 3 ms 7504 KB Output is correct
26 Correct 5 ms 8220 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7248 KB Output is correct
2 Correct 3 ms 7248 KB Output is correct
3 Correct 3 ms 7416 KB Output is correct
4 Correct 3 ms 7248 KB Output is correct
5 Correct 4 ms 7248 KB Output is correct
6 Correct 3 ms 7248 KB Output is correct
7 Correct 3 ms 7248 KB Output is correct
8 Correct 2 ms 7248 KB Output is correct
9 Correct 3 ms 7672 KB Output is correct
10 Correct 3 ms 7504 KB Output is correct
11 Correct 3 ms 7504 KB Output is correct
12 Correct 3 ms 7504 KB Output is correct
13 Correct 3 ms 7504 KB Output is correct
14 Correct 3 ms 7668 KB Output is correct
15 Correct 3 ms 7504 KB Output is correct
16 Correct 3 ms 7504 KB Output is correct
17 Correct 14 ms 10316 KB Output is correct
18 Correct 16 ms 10576 KB Output is correct
19 Correct 16 ms 10676 KB Output is correct
20 Correct 15 ms 10744 KB Output is correct
21 Correct 17 ms 10432 KB Output is correct
22 Correct 28 ms 13648 KB Output is correct
23 Correct 6 ms 8016 KB Output is correct
24 Correct 12 ms 9296 KB Output is correct
25 Correct 3 ms 7504 KB Output is correct
26 Correct 5 ms 8220 KB Output is correct
27 Correct 3 ms 7760 KB Output is correct
28 Correct 61 ms 22668 KB Output is correct
29 Correct 98 ms 28488 KB Output is correct
30 Correct 95 ms 27976 KB Output is correct
31 Correct 88 ms 27976 KB Output is correct
32 Correct 89 ms 29000 KB Output is correct
33 Correct 96 ms 28004 KB Output is correct
34 Correct 94 ms 28008 KB Output is correct
35 Correct 38 ms 15432 KB Output is correct
36 Correct 92 ms 28488 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7248 KB Output is correct
2 Correct 3 ms 7248 KB Output is correct
3 Correct 24 ms 14408 KB Output is correct
4 Correct 22 ms 12104 KB Output is correct
5 Correct 43 ms 20808 KB Output is correct
6 Correct 42 ms 19800 KB Output is correct
7 Correct 42 ms 20656 KB Output is correct
8 Correct 45 ms 20040 KB Output is correct
9 Correct 40 ms 20552 KB Output is correct
10 Correct 38 ms 15504 KB Output is correct
11 Correct 84 ms 24904 KB Output is correct
12 Correct 3 ms 7248 KB Output is correct
13 Correct 3 ms 7416 KB Output is correct
14 Correct 3 ms 7248 KB Output is correct
15 Correct 2 ms 7416 KB Output is correct
16 Correct 3 ms 7248 KB Output is correct
17 Correct 3 ms 7504 KB Output is correct
18 Correct 3 ms 7248 KB Output is correct
19 Correct 4 ms 7248 KB Output is correct
20 Correct 4 ms 7248 KB Output is correct
21 Correct 6 ms 7248 KB Output is correct
22 Correct 46 ms 18120 KB Output is correct
23 Correct 77 ms 25048 KB Output is correct
24 Correct 74 ms 25424 KB Output is correct

Subtask #8
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 12344 KB Output is correct
2 Correct 33 ms 13244 KB Output is correct
3 Correct 4 ms 7248 KB Output is correct
4 Correct 4 ms 7248 KB Output is correct
5 Correct 94 ms 26540 KB Output is correct
6 Correct 98 ms 29512 KB Output is correct
7 Correct 2 ms 7248 KB Output is correct
8 Correct 53 ms 17308 KB Output is correct
9 Correct 61 ms 20148 KB Output is correct
10 Correct 26 ms 12228 KB Output is correct
11 Correct 30 ms 12228 KB Output is correct
12 Correct 3 ms 7248 KB Output is correct
13 Correct 2 ms 7248 KB Output is correct
14 Correct 2 ms 7248 KB Output is correct
15 Correct 2 ms 7248 KB Output is correct
16 Correct 3 ms 7248 KB Output is correct
17 Correct 3 ms 7248 KB Output is correct
18 Correct 27 ms 12212 KB Output is correct
19 Correct 32 ms 13880 KB Output is correct
20 Correct 26 ms 12372 KB Output is correct
21 Correct 29 ms 13524 KB Output is correct
22 Correct 26 ms 12740 KB Output is correct
23 Correct 29 ms 12740 KB Output is correct
24 Correct 3 ms 7248 KB Output is correct
25 Correct 3 ms 7248 KB Output is correct
26 Correct 24 ms 14408 KB Output is correct
27 Correct 22 ms 12104 KB Output is correct
28 Correct 43 ms 20808 KB Output is correct
29 Correct 42 ms 19800 KB Output is correct
30 Correct 42 ms 20656 KB Output is correct
31 Correct 45 ms 20040 KB Output is correct
32 Correct 3 ms 7248 KB Output is correct
33 Correct 3 ms 7248 KB Output is correct
34 Correct 3 ms 7416 KB Output is correct
35 Correct 3 ms 7248 KB Output is correct
36 Correct 4 ms 7248 KB Output is correct
37 Correct 3 ms 7248 KB Output is correct
38 Correct 3 ms 7248 KB Output is correct
39 Correct 2 ms 7248 KB Output is correct
40 Correct 3 ms 7672 KB Output is correct
41 Correct 3 ms 7504 KB Output is correct
42 Correct 3 ms 7504 KB Output is correct
43 Correct 3 ms 7504 KB Output is correct
44 Correct 3 ms 7504 KB Output is correct
45 Correct 3 ms 7668 KB Output is correct
46 Correct 3 ms 7504 KB Output is correct
47 Correct 3 ms 7504 KB Output is correct
48 Correct 14 ms 10316 KB Output is correct
49 Correct 16 ms 10576 KB Output is correct
50 Correct 16 ms 10676 KB Output is correct
51 Correct 15 ms 10744 KB Output is correct
52 Correct 17 ms 10432 KB Output is correct
53 Correct 28 ms 13648 KB Output is correct
54 Correct 6 ms 8016 KB Output is correct
55 Correct 12 ms 9296 KB Output is correct
56 Correct 3 ms 7504 KB Output is correct
57 Correct 5 ms 8220 KB Output is correct
58 Correct 3 ms 7760 KB Output is correct
59 Correct 61 ms 22668 KB Output is correct
60 Correct 98 ms 28488 KB Output is correct
61 Correct 95 ms 27976 KB Output is correct
62 Correct 88 ms 27976 KB Output is correct
63 Correct 89 ms 29000 KB Output is correct
64 Correct 96 ms 28004 KB Output is correct
65 Correct 94 ms 28008 KB Output is correct
66 Correct 38 ms 15432 KB Output is correct
67 Correct 92 ms 28488 KB Output is correct
68 Correct 40 ms 20552 KB Output is correct
69 Correct 38 ms 15504 KB Output is correct
70 Correct 84 ms 24904 KB Output is correct
71 Correct 3 ms 7248 KB Output is correct
72 Correct 3 ms 7416 KB Output is correct
73 Correct 3 ms 7248 KB Output is correct
74 Correct 2 ms 7416 KB Output is correct
75 Correct 3 ms 7248 KB Output is correct
76 Correct 3 ms 7504 KB Output is correct
77 Correct 3 ms 7248 KB Output is correct
78 Correct 4 ms 7248 KB Output is correct
79 Correct 4 ms 7248 KB Output is correct
80 Correct 6 ms 7248 KB Output is correct
81 Correct 46 ms 18120 KB Output is correct
82 Correct 77 ms 25048 KB Output is correct
83 Correct 74 ms 25424 KB Output is correct
84 Correct 105 ms 27980 KB Output is correct
85 Correct 97 ms 27528 KB Output is correct
86 Correct 121 ms 32072 KB Output is correct
87 Correct 107 ms 32584 KB Output is correct
88 Correct 3 ms 7248 KB Output is correct
89 Correct 101 ms 32616 KB Output is correct
90 Correct 94 ms 29540 KB Output is correct
91 Correct 92 ms 28488 KB Output is correct