Submission #667032

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
667032	2022-11-30 08:17:34	tatyam	Catfish Farm (IOI22_fish)	C++17	100 / 100	260 ms	23208 KiB

fish

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#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;
    }
};
ll 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]);
 
 
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• Subtask 2: 6 / 6
• Subtask 3: 9 / 9
• Subtask 4: 14 / 14
• Subtask 5: 21 / 21
• Subtask 6: 17 / 17
• Subtask 7: 14 / 14
• Subtask 8: 16 / 16