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Submission #999406

# Submission time Handle Problem Language Result Execution time Memory
999406 2024-06-15T12:39:13 Z snpmrnhlol Constellation 3 (JOI20_constellation3) C++17
35 / 100
 1500 ms 61268 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll N = 2e5;
const ll G = 2*N;
ll n,m;
vector <ll> e[G];
ll v[N];
ll leftid[N],rightid[N];
ll leftside[N + 1],rightside[N + 1];
///
ll stk[N];
vector <ll> p;
struct star{
    ll x,y,c;
}v2[N];
vector <ll> cand[G];
map<ll,pair<ll,ll>> f;
vector <ll> polls;
ll dp[G];
ll cnt = 0;
void addedge(ll u,ll w){
    e[u].push_back(w);
}
void dfs(ll node){
    ll mx = 0;
    for(auto i:e[node]){
        dfs(i);
        mx+=dp[i];
    }
    for(auto i:cand[node]){
        ///leftadd
        star s = v2[i];
        ll candcost = s.c;
        for(ll j = s.x;j != n && v[j] < s.y;j = rightside[j]){
            if(rightid[j] != -1){candcost+=dp[rightid[j]];};
        }
        for(ll j = s.x;j != n && v[j] < s.y;j = leftside[j]){
            if(leftid[j] != -1){candcost+=dp[leftid[j]];};
        }
        mx = max(mx,candcost);
    }
    dp[node] = mx;
}
int main(){
    cin>>n;
    p.resize(n);
    for(ll i = 0;i < n;i++){
        cin>>v[i];
        p[i] = i;
        leftid[i] = rightid[i] = -1;
    }
    sort(p.begin(),p.end(),[&](ll a,ll b){
        if(v[a] == v[b])return a < b;
        return v[a] > v[b];
    });
    cin>>m;
    ll sum = 0;
    for(ll i = 0;i < m;i++){
        cin>>v2[i].x>>v2[i].y>>v2[i].c;
        sum+=v2[i].c;
        v2[i].x--;
    }
    sort(v2,v2 + m,[&](star a,star b){
         return a.y > b.y;
    });
    f[0] = {n - 1,cnt++};
    ll pt = 0;
    ll pt2 = 0;
    for(ll i = n;i >= 1;i--){
        polls.clear();
        while(pt2 < n && v[p[pt2]] >= i){
            polls.push_back(p[pt2]);
            pt2++;
        }
        ll j = 0;
        while(j < polls.size()){
            auto it = prev(f.upper_bound(polls[j]));
            ll k = j;
            while(k < polls.size() && polls[k] <= it->second.first){
                k++;
            }
            ll l = it->first;
            ll r = it->second.first;
            ll id = it->second.second;
            f.erase(it);
            for(ll p = j;p <= k;p++){
                ll lside = (p == j?l:polls[p - 1] + 1);
                ll rside = (p == k?r:polls[p] - 1);
                if(lside <= rside){
                    addedge(id,cnt);
                    f[lside] = {rside,cnt};
                    if(p != k){
                        leftid[rside + 1] = cnt;
                    }
                    if(p != j){
                        rightid[lside - 1] = cnt;
                    }
                    cnt++;
                }
            }
            j = k;
        }
        while(pt < m && v2[pt].y >= i){
            ll id = prev(f.upper_bound(v2[pt].x))->second.second;
            cand[id].push_back(pt);
            pt++;
        }
    }
    ll cnt2 = 0;
    for(ll i = 0;i < n;i++){
        while(cnt2 > 0 && v[i] > v[stk[cnt2 - 1]]){
            cnt2--;
        }
        leftside[i] = (cnt2 == 0?n:stk[cnt2 - 1]);
        stk[cnt2++] = i;
    }
    cnt2 = 0;
    for(ll i = n - 1;i >= 0;i--){
        while(cnt2 > 0 && v[i] > v[stk[cnt2 - 1]]){
            cnt2--;
        }
        rightside[i] = (cnt2 == 0?n:stk[cnt2 - 1]);
        stk[cnt2++] = i;
    }
    dfs(0);
    cout<<sum - dp[0];
    return 0;
}

Compilation message

constellation3.cpp: In function 'int main()':
constellation3.cpp:77:17: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |         while(j < polls.size()){
      |               ~~^~~~~~~~~~~~~~
constellation3.cpp:80:21: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   80 |             while(k < polls.size() && polls[k] <= it->second.first){
      |                   ~~^~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 32092 KB Output is correct
2 Correct 5 ms 32092 KB Output is correct
3 Correct 5 ms 32092 KB Output is correct
4 Correct 5 ms 32148 KB Output is correct
5 Correct 5 ms 32092 KB Output is correct
6 Correct 5 ms 32144 KB Output is correct
7 Correct 5 ms 32092 KB Output is correct
8 Correct 4 ms 32092 KB Output is correct
9 Correct 5 ms 32092 KB Output is correct
10 Correct 5 ms 32088 KB Output is correct
11 Correct 4 ms 32092 KB Output is correct
12 Correct 4 ms 32164 KB Output is correct
13 Correct 4 ms 32092 KB Output is correct
14 Correct 5 ms 32088 KB Output is correct
15 Correct 5 ms 32092 KB Output is correct
16 Correct 6 ms 32212 KB Output is correct
17 Correct 5 ms 32092 KB Output is correct
18 Correct 5 ms 32088 KB Output is correct
19 Correct 6 ms 32092 KB Output is correct
20 Correct 5 ms 32092 KB Output is correct
21 Correct 5 ms 32092 KB Output is correct
22 Correct 5 ms 32088 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 32092 KB Output is correct
2 Correct 5 ms 32092 KB Output is correct
3 Correct 5 ms 32092 KB Output is correct
4 Correct 5 ms 32148 KB Output is correct
5 Correct 5 ms 32092 KB Output is correct
6 Correct 5 ms 32144 KB Output is correct
7 Correct 5 ms 32092 KB Output is correct
8 Correct 4 ms 32092 KB Output is correct
9 Correct 5 ms 32092 KB Output is correct
10 Correct 5 ms 32088 KB Output is correct
11 Correct 4 ms 32092 KB Output is correct
12 Correct 4 ms 32164 KB Output is correct
13 Correct 4 ms 32092 KB Output is correct
14 Correct 5 ms 32088 KB Output is correct
15 Correct 5 ms 32092 KB Output is correct
16 Correct 6 ms 32212 KB Output is correct
17 Correct 5 ms 32092 KB Output is correct
18 Correct 5 ms 32088 KB Output is correct
19 Correct 6 ms 32092 KB Output is correct
20 Correct 5 ms 32092 KB Output is correct
21 Correct 5 ms 32092 KB Output is correct
22 Correct 5 ms 32088 KB Output is correct
23 Correct 7 ms 32348 KB Output is correct
24 Correct 7 ms 32340 KB Output is correct
25 Correct 7 ms 32132 KB Output is correct
26 Correct 7 ms 32348 KB Output is correct
27 Correct 10 ms 32344 KB Output is correct
28 Correct 7 ms 32344 KB Output is correct
29 Correct 7 ms 32176 KB Output is correct
30 Correct 8 ms 32348 KB Output is correct
31 Correct 7 ms 32348 KB Output is correct
32 Correct 7 ms 32348 KB Output is correct
33 Correct 7 ms 32348 KB Output is correct
34 Correct 7 ms 32372 KB Output is correct
35 Correct 8 ms 32348 KB Output is correct
36 Correct 8 ms 32092 KB Output is correct
37 Correct 9 ms 32140 KB Output is correct
38 Correct 6 ms 32348 KB Output is correct
39 Correct 7 ms 32228 KB Output is correct
40 Correct 9 ms 32220 KB Output is correct
41 Correct 6 ms 32092 KB Output is correct
42 Correct 7 ms 32220 KB Output is correct
43 Correct 8 ms 32224 KB Output is correct
44 Correct 6 ms 32092 KB Output is correct

Subtask #3
0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 32092 KB Output is correct
2 Correct 5 ms 32092 KB Output is correct
3 Correct 5 ms 32092 KB Output is correct
4 Correct 5 ms 32148 KB Output is correct
5 Correct 5 ms 32092 KB Output is correct
6 Correct 5 ms 32144 KB Output is correct
7 Correct 5 ms 32092 KB Output is correct
8 Correct 4 ms 32092 KB Output is correct
9 Correct 5 ms 32092 KB Output is correct
10 Correct 5 ms 32088 KB Output is correct
11 Correct 4 ms 32092 KB Output is correct
12 Correct 4 ms 32164 KB Output is correct
13 Correct 4 ms 32092 KB Output is correct
14 Correct 5 ms 32088 KB Output is correct
15 Correct 5 ms 32092 KB Output is correct
16 Correct 6 ms 32212 KB Output is correct
17 Correct 5 ms 32092 KB Output is correct
18 Correct 5 ms 32088 KB Output is correct
19 Correct 6 ms 32092 KB Output is correct
20 Correct 5 ms 32092 KB Output is correct
21 Correct 5 ms 32092 KB Output is correct
22 Correct 5 ms 32088 KB Output is correct
23 Correct 7 ms 32348 KB Output is correct
24 Correct 7 ms 32340 KB Output is correct
25 Correct 7 ms 32132 KB Output is correct
26 Correct 7 ms 32348 KB Output is correct
27 Correct 10 ms 32344 KB Output is correct
28 Correct 7 ms 32344 KB Output is correct
29 Correct 7 ms 32176 KB Output is correct
30 Correct 8 ms 32348 KB Output is correct
31 Correct 7 ms 32348 KB Output is correct
32 Correct 7 ms 32348 KB Output is correct
33 Correct 7 ms 32348 KB Output is correct
34 Correct 7 ms 32372 KB Output is correct
35 Correct 8 ms 32348 KB Output is correct
36 Correct 8 ms 32092 KB Output is correct
37 Correct 9 ms 32140 KB Output is correct
38 Correct 6 ms 32348 KB Output is correct
39 Correct 7 ms 32228 KB Output is correct
40 Correct 9 ms 32220 KB Output is correct
41 Correct 6 ms 32092 KB Output is correct
42 Correct 7 ms 32220 KB Output is correct
43 Correct 8 ms 32224 KB Output is correct
44 Correct 6 ms 32092 KB Output is correct
45 Correct 395 ms 53588 KB Output is correct
46 Correct 363 ms 53328 KB Output is correct
47 Correct 374 ms 53376 KB Output is correct
48 Correct 368 ms 53072 KB Output is correct
49 Correct 356 ms 53072 KB Output is correct
50 Correct 363 ms 52820 KB Output is correct
51 Correct 358 ms 53072 KB Output is correct
52 Correct 370 ms 53332 KB Output is correct
53 Correct 387 ms 53328 KB Output is correct
54 Execution timed out 1565 ms 61268 KB Time limit exceeded
55 Halted 0 ms 0 KB -