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Submission #667029

# Submission time Handle Problem Language Result Execution time Memory
667029 2022-11-30T08:02:57 Z tatyam Catfish Farm (IOI22_fish) C++17
9 / 100
 222 ms 20676 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
void chmax(ll& a, ll b){ if(a < b) a = b; }

// range chmax・1 点取得 で O(M log N)
struct SegTree {
    ll n;
    vector<ll> seg;
    SegTree(ll n): n(n), seg(n * 2) {}
    void range_chmax(ll l, ll r, ll x) {
        l += n;
        r += n;
        while(l < r){
            if(l & 1) chmax(seg[l++], x);
            if(r & 1) chmax(seg[--r], x);
            l >>= 1; r >>= 1;
        }
    }
    ll operator[](ll i) const {
        i += n;
        ll x = 0;
        do chmax(x, seg[i]); while(i >>= 1);
        return x;
    }
};
long long max_weights(int N, int M, vector<int> X, vector<int> Y, vector<int> W) {
    vector fish(N, vector<pair<ll, ll>>{});
    for (ll i = 0; i < M; i++) {
        fish[X[i]].emplace_back(Y[i], W[i]);
    }
    for (auto& v : fish) sort(v.begin(), v.end());
    SegTree up(N + 1), down(N + 1);
    ll zero = 0;
    for(ll x = 0; x + 1 < N; x++) {
        for(auto [y, w] : fish[x]) {
            up.range_chmax(y + 1, N + 1, up[y] + w);
        }
        reverse(fish[x + 1].begin(), fish[x + 1].end());
        for(auto [y, w] : fish[x + 1]) {
            down.range_chmax(0, y + 1, down[y + 1] + w);
        }
        reverse(fish[x + 1].begin(), fish[x + 1].end());
        const ll zero_ = exchange(zero, down[0]);
        down.range_chmax(0, N + 1, up[N]);
        up.range_chmax(0, N + 1, zero_);
    }
    return max({zero, down[0], up[N]});
}

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 8660 KB Output is correct
2 Correct 55 ms 9920 KB Output is correct
3 Correct 14 ms 5776 KB Output is correct
4 Correct 12 ms 5716 KB Output is correct
5 Correct 161 ms 18084 KB Output is correct
6 Correct 222 ms 20676 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 98 ms 11980 KB Output is correct
3 Correct 107 ms 14004 KB Output is correct
4 Correct 46 ms 8572 KB Output is correct
5 Correct 54 ms 10012 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 14 ms 5884 KB Output is correct
11 Correct 12 ms 5716 KB Output is correct
12 Correct 50 ms 8636 KB Output is correct
13 Correct 60 ms 9892 KB Output is correct
14 Correct 47 ms 8572 KB Output is correct
15 Correct 54 ms 9592 KB Output is correct
16 Correct 47 ms 8764 KB Output is correct
17 Correct 60 ms 9528 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 5676 KB Output is correct
2 Correct 12 ms 5716 KB Output is correct
3 Incorrect 35 ms 8276 KB 1st lines differ - on the 1st token, expected: '21261825233649', found: '20897672610412'
4 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 300 KB Output is correct
5 Correct 0 ms 296 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 288 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Incorrect 1 ms 340 KB 1st lines differ - on the 1st token, expected: '216624184325', found: '214837477243'
10 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 300 KB Output is correct
5 Correct 0 ms 296 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 288 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Incorrect 1 ms 340 KB 1st lines differ - on the 1st token, expected: '216624184325', found: '214837477243'
10 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 300 KB Output is correct
5 Correct 0 ms 296 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 288 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Incorrect 1 ms 340 KB 1st lines differ - on the 1st token, expected: '216624184325', found: '214837477243'
10 Halted 0 ms 0 KB -

Subtask #7
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 5676 KB Output is correct
2 Correct 12 ms 5716 KB Output is correct
3 Incorrect 35 ms 8276 KB 1st lines differ - on the 1st token, expected: '21261825233649', found: '20897672610412'
4 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 8660 KB Output is correct
2 Correct 55 ms 9920 KB Output is correct
3 Correct 14 ms 5776 KB Output is correct
4 Correct 12 ms 5716 KB Output is correct
5 Correct 161 ms 18084 KB Output is correct
6 Correct 222 ms 20676 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 98 ms 11980 KB Output is correct
9 Correct 107 ms 14004 KB Output is correct
10 Correct 46 ms 8572 KB Output is correct
11 Correct 54 ms 10012 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 14 ms 5884 KB Output is correct
17 Correct 12 ms 5716 KB Output is correct
18 Correct 50 ms 8636 KB Output is correct
19 Correct 60 ms 9892 KB Output is correct
20 Correct 47 ms 8572 KB Output is correct
21 Correct 54 ms 9592 KB Output is correct
22 Correct 47 ms 8764 KB Output is correct
23 Correct 60 ms 9528 KB Output is correct
24 Correct 11 ms 5676 KB Output is correct
25 Correct 12 ms 5716 KB Output is correct
26 Incorrect 35 ms 8276 KB 1st lines differ - on the 1st token, expected: '21261825233649', found: '20897672610412'
27 Halted 0 ms 0 KB -