oj.uz

Submission #1114334

# Submission time Handle Problem Language Result Execution time Memory
1114334 2024-11-18T15:17:32 Z Mike_Vu Catfish Farm (IOI22_fish) C++17
18 / 100
 90 ms 31048 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
/*
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 25 ms 12568 KB Output is correct
2 Correct 32 ms 14016 KB Output is correct
3 Correct 3 ms 7420 KB Output is correct
4 Correct 3 ms 7248 KB Output is correct
5 Correct 89 ms 27848 KB Output is correct
6 Correct 90 ms 31048 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7488 KB Output is correct
2 Correct 48 ms 18068 KB Output is correct
3 Correct 59 ms 20404 KB Output is correct
4 Correct 25 ms 12740 KB Output is correct
5 Correct 31 ms 14020 KB Output is correct
6 Correct 2 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 28 ms 12732 KB Output is correct
13 Correct 32 ms 14008 KB Output is correct
14 Correct 35 ms 12628 KB Output is correct
15 Correct 31 ms 13500 KB Output is correct
16 Correct 26 ms 12904 KB Output is correct
17 Correct 29 ms 13252 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7248 KB Output is correct
2 Correct 3 ms 7484 KB Output is correct
3 Correct 23 ms 14612 KB Output is correct
4 Correct 19 ms 12332 KB Output is correct
5 Correct 46 ms 20772 KB Output is correct
6 Correct 37 ms 20040 KB Output is correct
7 Correct 46 ms 20544 KB Output is correct
8 Correct 43 ms 20552 KB Output is correct

Subtask #4
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 7248 KB Output is correct
4 Correct 3 ms 7248 KB Output is correct
5 Correct 3 ms 7248 KB Output is correct
6 Correct 2 ms 7248 KB Output is correct
7 Correct 3 ms 7416 KB Output is correct
8 Incorrect 3 ms 7416 KB 1st lines differ - on the 1st token, expected: '2', found: '1'
9 Halted 0 ms 0 KB -

Subtask #5
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 7248 KB Output is correct
4 Correct 3 ms 7248 KB Output is correct
5 Correct 3 ms 7248 KB Output is correct
6 Correct 2 ms 7248 KB Output is correct
7 Correct 3 ms 7416 KB Output is correct
8 Incorrect 3 ms 7416 KB 1st lines differ - on the 1st token, expected: '2', found: '1'
9 Halted 0 ms 0 KB -

Subtask #6
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 7248 KB Output is correct
4 Correct 3 ms 7248 KB Output is correct
5 Correct 3 ms 7248 KB Output is correct
6 Correct 2 ms 7248 KB Output is correct
7 Correct 3 ms 7416 KB Output is correct
8 Incorrect 3 ms 7416 KB 1st lines differ - on the 1st token, expected: '2', found: '1'
9 Halted 0 ms 0 KB -

Subtask #7
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7248 KB Output is correct
2 Correct 3 ms 7484 KB Output is correct
3 Correct 23 ms 14612 KB Output is correct
4 Correct 19 ms 12332 KB Output is correct
5 Correct 46 ms 20772 KB Output is correct
6 Correct 37 ms 20040 KB Output is correct
7 Correct 46 ms 20544 KB Output is correct
8 Correct 43 ms 20552 KB Output is correct
9 Correct 39 ms 20556 KB Output is correct
10 Incorrect 36 ms 16200 KB 1st lines differ - on the 1st token, expected: '36454348383152', found: '36364983059693'
11 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 12568 KB Output is correct
2 Correct 32 ms 14016 KB Output is correct
3 Correct 3 ms 7420 KB Output is correct
4 Correct 3 ms 7248 KB Output is correct
5 Correct 89 ms 27848 KB Output is correct
6 Correct 90 ms 31048 KB Output is correct
7 Correct 2 ms 7488 KB Output is correct
8 Correct 48 ms 18068 KB Output is correct
9 Correct 59 ms 20404 KB Output is correct
10 Correct 25 ms 12740 KB Output is correct
11 Correct 31 ms 14020 KB Output is correct
12 Correct 2 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 28 ms 12732 KB Output is correct
19 Correct 32 ms 14008 KB Output is correct
20 Correct 35 ms 12628 KB Output is correct
21 Correct 31 ms 13500 KB Output is correct
22 Correct 26 ms 12904 KB Output is correct
23 Correct 29 ms 13252 KB Output is correct
24 Correct 4 ms 7248 KB Output is correct
25 Correct 3 ms 7484 KB Output is correct
26 Correct 23 ms 14612 KB Output is correct
27 Correct 19 ms 12332 KB Output is correct
28 Correct 46 ms 20772 KB Output is correct
29 Correct 37 ms 20040 KB Output is correct
30 Correct 46 ms 20544 KB Output is correct
31 Correct 43 ms 20552 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 7248 KB Output is correct
35 Correct 3 ms 7248 KB Output is correct
36 Correct 3 ms 7248 KB Output is correct
37 Correct 2 ms 7248 KB Output is correct
38 Correct 3 ms 7416 KB Output is correct
39 Incorrect 3 ms 7416 KB 1st lines differ - on the 1st token, expected: '2', found: '1'
40 Halted 0 ms 0 KB -