oj.uz

Submission #970325

# Submission time Handle Problem Language Result Execution time Memory
970325 2024-04-26T11:08:28 Z maksim1744 Catfish Farm (IOI22_fish) C++17
100 / 100
 110 ms 33384 KB 
/*
    author:  Maksim1744
    created: 26.04.2024 01:52:26
*/

#include "bits/stdc++.h"

using namespace std;

using ll = long long;
using ld = long double;

#define mp   make_pair
#define pb   push_back
#define eb   emplace_back

#define sum(a)     ( accumulate ((a).begin(), (a).end(), 0ll))
#define mine(a)    (*min_element((a).begin(), (a).end()))
#define maxe(a)    (*max_element((a).begin(), (a).end()))
#define mini(a)    ( min_element((a).begin(), (a).end()) - (a).begin())
#define maxi(a)    ( max_element((a).begin(), (a).end()) - (a).begin())
#define lowb(a, x) ( lower_bound((a).begin(), (a).end(), (x)) - (a).begin())
#define uppb(a, x) ( upper_bound((a).begin(), (a).end(), (x)) - (a).begin())

template<typename T>             vector<T>& operator--            (vector<T> &v){for (auto& i : v) --i;            return  v;}
template<typename T>             vector<T>& operator++            (vector<T> &v){for (auto& i : v) ++i;            return  v;}
template<typename T>             istream& operator>>(istream& is,  vector<T> &v){for (auto& i : v) is >> i;        return is;}
template<typename T>             ostream& operator<<(ostream& os,  vector<T>  v){for (auto& i : v) os << i << ' '; return os;}
template<typename T, typename U> pair<T,U>& operator--           (pair<T, U> &p){--p.first; --p.second;            return  p;}
template<typename T, typename U> pair<T,U>& operator++           (pair<T, U> &p){++p.first; ++p.second;            return  p;}
template<typename T, typename U> istream& operator>>(istream& is, pair<T, U> &p){is >> p.first >> p.second;        return is;}
template<typename T, typename U> ostream& operator<<(ostream& os, pair<T, U>  p){os << p.first << ' ' << p.second; return os;}
template<typename T, typename U> pair<T,U> operator-(pair<T,U> a, pair<T,U> b){return mp(a.first-b.first, a.second-b.second);}
template<typename T, typename U> pair<T,U> operator+(pair<T,U> a, pair<T,U> b){return mp(a.first+b.first, a.second+b.second);}
template<typename T, typename U> void umin(T& a, U b){if (a > b) a = b;}
template<typename T, typename U> void umax(T& a, U b){if (a < b) a = b;}

#ifdef HOME
#define SHOW_COLORS
#include "/mnt/c/Libs/tools/print.cpp"
#else
#define show(...) void(0)
#define debugf(fun)   fun
#define debugv(var)   var
#define mclock    void(0)
#define shows     void(0)
#define debug  if (false)
#define OSTREAM(...)    ;
#define OSTREAM0(...)   ;
#endif

const ll inf = 1e18;

ll max_weights(int n, int m, std::vector<int> X, std::vector<int> Y, std::vector<int> W) {
    vector<vector<pair<int, int>>> atx(n);
    for (int i = 0; i < m; ++i) {
        atx[X[i]].eb(Y[i], W[i]);
    }
    for (auto& v : atx)
        sort(v.begin(), v.end());

    vector<vector<ll>> up(n), down(n);
    vector<ll> best(n);

    for (int i = 0; i < n; ++i) {
        up[i].assign(atx[i].size(), 0);
        down[i].assign(atx[i].size(), 0);
        if (i + 1 < n) {
            int ind = 0;
            ll prev = 0;
            if (i >= 2) prev = max(prev, best[i - 2]);
            if (i && !down[i - 1].empty()) prev = max(prev, maxe(down[i - 1]));
            for (int j = 0; j < atx[i].size(); ++j) {
                if (i) {
                    while (ind < atx[i - 1].size() && atx[i - 1][ind].first < atx[i][j].first) {
                        prev = max(prev, up[i - 1][ind]);
                        ++ind;
                    }
                }
                if (j) up[i][j] = max(up[i][j], up[i][j - 1] + atx[i][j].second);
                up[i][j] = max(up[i][j], prev + atx[i][j].second);
            }
        }
        if (i > 0) {
            int ind = (int)atx[i - 1].size() - 1;
            ll prev = 0;
            if (i >= 2) prev = max(prev, best[i - 2]);
            for (int j = (int)atx[i].size() - 1; j >= 0; --j) {
                if (i) {
                    while (ind >= 0 && atx[i - 1][ind].first > atx[i][j].first) {
                        prev = max(prev, down[i - 1][ind]);
                        --ind;
                    }
                }
                if (j + 1 < down[i].size())
                    down[i][j] = max(down[i][j], down[i][j + 1] + atx[i][j].second);
                down[i][j] = max(down[i][j], prev + atx[i][j].second);
            }
        }
        for (ll a : up[i]) best[i] = max(best[i], a);
        for (ll a : down[i]) best[i] = max(best[i], a);
        if (i) best[i] = max(best[i], best[i - 1]);
    }
    return best.back();
}


#ifdef HOUSE
int main() {
    ios_base::sync_with_stdio(false); cin.tie(NULL);

    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;
}
#endif

Compilation message

fish.cpp: In function 'll max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:73:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |             for (int j = 0; j < atx[i].size(); ++j) {
      |                             ~~^~~~~~~~~~~~~~~
fish.cpp:75:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   75 |                     while (ind < atx[i - 1].size() && atx[i - 1][ind].first < atx[i][j].first) {
      |                            ~~~~^~~~~~~~~~~~~~~~~~~
fish.cpp:95:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   95 |                 if (j + 1 < down[i].size())
      |                     ~~~~~~^~~~~~~~~~~~~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 12748 KB Output is correct
2 Correct 36 ms 14792 KB Output is correct
3 Correct 4 ms 8284 KB Output is correct
4 Correct 5 ms 8028 KB Output is correct
5 Correct 98 ms 28612 KB Output is correct
6 Correct 101 ms 31588 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 53 ms 17964 KB Output is correct
3 Correct 67 ms 21176 KB Output is correct
4 Correct 28 ms 13004 KB Output is correct
5 Correct 35 ms 14640 KB Output is correct
6 Correct 0 ms 600 KB Output is correct
7 Correct 0 ms 600 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 5 ms 8028 KB Output is correct
11 Correct 5 ms 8028 KB Output is correct
12 Correct 28 ms 12752 KB Output is correct
13 Correct 39 ms 14792 KB Output is correct
14 Correct 29 ms 12648 KB Output is correct
15 Correct 32 ms 14480 KB Output is correct
16 Correct 29 ms 12756 KB Output is correct
17 Correct 33 ms 14008 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 8024 KB Output is correct
2 Correct 5 ms 8028 KB Output is correct
3 Correct 33 ms 14684 KB Output is correct
4 Correct 26 ms 12892 KB Output is correct
5 Correct 45 ms 21584 KB Output is correct
6 Correct 42 ms 20828 KB Output is correct
7 Correct 44 ms 21432 KB Output is correct
8 Correct 45 ms 21328 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 600 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 600 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 488 KB Output is correct
17 Correct 13 ms 3400 KB Output is correct
18 Correct 13 ms 3672 KB Output is correct
19 Correct 13 ms 3512 KB Output is correct
20 Correct 16 ms 3676 KB Output is correct
21 Correct 13 ms 3420 KB Output is correct
22 Correct 25 ms 7000 KB Output is correct
23 Correct 3 ms 860 KB Output is correct
24 Correct 9 ms 2452 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 3 ms 860 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 600 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 488 KB Output is correct
17 Correct 13 ms 3400 KB Output is correct
18 Correct 13 ms 3672 KB Output is correct
19 Correct 13 ms 3512 KB Output is correct
20 Correct 16 ms 3676 KB Output is correct
21 Correct 13 ms 3420 KB Output is correct
22 Correct 25 ms 7000 KB Output is correct
23 Correct 3 ms 860 KB Output is correct
24 Correct 9 ms 2452 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 3 ms 860 KB Output is correct
27 Correct 2 ms 860 KB Output is correct
28 Correct 64 ms 15952 KB Output is correct
29 Correct 87 ms 21588 KB Output is correct
30 Correct 86 ms 21332 KB Output is correct
31 Correct 85 ms 21328 KB Output is correct
32 Correct 80 ms 22100 KB Output is correct
33 Correct 86 ms 21328 KB Output is correct
34 Correct 87 ms 21328 KB Output is correct
35 Correct 33 ms 8572 KB Output is correct
36 Correct 85 ms 21860 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 8024 KB Output is correct
2 Correct 5 ms 8028 KB Output is correct
3 Correct 33 ms 14684 KB Output is correct
4 Correct 26 ms 12892 KB Output is correct
5 Correct 45 ms 21584 KB Output is correct
6 Correct 42 ms 20828 KB Output is correct
7 Correct 44 ms 21432 KB Output is correct
8 Correct 45 ms 21328 KB Output is correct
9 Correct 42 ms 21304 KB Output is correct
10 Correct 38 ms 12884 KB Output is correct
11 Correct 73 ms 25692 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 428 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 4 ms 8284 KB Output is correct
19 Correct 6 ms 8028 KB Output is correct
20 Correct 4 ms 8028 KB Output is correct
21 Correct 5 ms 8028 KB Output is correct
22 Correct 43 ms 18776 KB Output is correct
23 Correct 70 ms 25684 KB Output is correct
24 Correct 71 ms 26332 KB Output is correct

Subtask #8
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 12748 KB Output is correct
2 Correct 36 ms 14792 KB Output is correct
3 Correct 4 ms 8284 KB Output is correct
4 Correct 5 ms 8028 KB Output is correct
5 Correct 98 ms 28612 KB Output is correct
6 Correct 101 ms 31588 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 53 ms 17964 KB Output is correct
9 Correct 67 ms 21176 KB Output is correct
10 Correct 28 ms 13004 KB Output is correct
11 Correct 35 ms 14640 KB Output is correct
12 Correct 0 ms 600 KB Output is correct
13 Correct 0 ms 600 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 5 ms 8028 KB Output is correct
17 Correct 5 ms 8028 KB Output is correct
18 Correct 28 ms 12752 KB Output is correct
19 Correct 39 ms 14792 KB Output is correct
20 Correct 29 ms 12648 KB Output is correct
21 Correct 32 ms 14480 KB Output is correct
22 Correct 29 ms 12756 KB Output is correct
23 Correct 33 ms 14008 KB Output is correct
24 Correct 4 ms 8024 KB Output is correct
25 Correct 5 ms 8028 KB Output is correct
26 Correct 33 ms 14684 KB Output is correct
27 Correct 26 ms 12892 KB Output is correct
28 Correct 45 ms 21584 KB Output is correct
29 Correct 42 ms 20828 KB Output is correct
30 Correct 44 ms 21432 KB Output is correct
31 Correct 45 ms 21328 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 600 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 1 ms 348 KB Output is correct
41 Correct 1 ms 604 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 1 ms 348 KB Output is correct
45 Correct 1 ms 348 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 1 ms 488 KB Output is correct
48 Correct 13 ms 3400 KB Output is correct
49 Correct 13 ms 3672 KB Output is correct
50 Correct 13 ms 3512 KB Output is correct
51 Correct 16 ms 3676 KB Output is correct
52 Correct 13 ms 3420 KB Output is correct
53 Correct 25 ms 7000 KB Output is correct
54 Correct 3 ms 860 KB Output is correct
55 Correct 9 ms 2452 KB Output is correct
56 Correct 1 ms 348 KB Output is correct
57 Correct 3 ms 860 KB Output is correct
58 Correct 2 ms 860 KB Output is correct
59 Correct 64 ms 15952 KB Output is correct
60 Correct 87 ms 21588 KB Output is correct
61 Correct 86 ms 21332 KB Output is correct
62 Correct 85 ms 21328 KB Output is correct
63 Correct 80 ms 22100 KB Output is correct
64 Correct 86 ms 21328 KB Output is correct
65 Correct 87 ms 21328 KB Output is correct
66 Correct 33 ms 8572 KB Output is correct
67 Correct 85 ms 21860 KB Output is correct
68 Correct 42 ms 21304 KB Output is correct
69 Correct 38 ms 12884 KB Output is correct
70 Correct 73 ms 25692 KB Output is correct
71 Correct 1 ms 344 KB Output is correct
72 Correct 1 ms 344 KB Output is correct
73 Correct 1 ms 348 KB Output is correct
74 Correct 0 ms 348 KB Output is correct
75 Correct 1 ms 428 KB Output is correct
76 Correct 1 ms 344 KB Output is correct
77 Correct 4 ms 8284 KB Output is correct
78 Correct 6 ms 8028 KB Output is correct
79 Correct 4 ms 8028 KB Output is correct
80 Correct 5 ms 8028 KB Output is correct
81 Correct 43 ms 18776 KB Output is correct
82 Correct 70 ms 25684 KB Output is correct
83 Correct 71 ms 26332 KB Output is correct
84 Correct 104 ms 28336 KB Output is correct
85 Correct 94 ms 28208 KB Output is correct
86 Correct 106 ms 32084 KB Output is correct
87 Correct 110 ms 33328 KB Output is correct
88 Correct 1 ms 348 KB Output is correct
89 Correct 109 ms 33384 KB Output is correct
90 Correct 100 ms 30292 KB Output is correct
91 Correct 98 ms 29268 KB Output is correct