oj.uz

Submission #892604

# Submission time Handle Problem Language Result Execution time Memory
892604 2023-12-25T15:08:36 Z smartmonky Team Contest (JOI22_team) C++14
35 / 100
 71 ms 10072 KB 
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx,avx2,fma")
#include <bits/stdc++.h>
 
#define ff first
#define ss second
#define pb push_back
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define int long long
#define rnd(l, r) uniform_int_distribution<int>(l, r)(rng)
 
using namespace std;

void fp(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);} 
int pow(int a,int b,int m){int ans=1;while(b){if(b&1){ans=(ans*a)%m;}b>>=1;a=(a*a)%m;}return ans;}
int binpow(int a,int b){int ans=1;while(b){if(b&1){ans=(ans*a);}b>>=1;a=(a*a);}return ans;}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
 
const int N = 1e5, maxn =200005, inf = 2e9, MXN = 1e8 + 2;

struct node{
    int mn;
    node *l, *r;
    node(){
        mn = -1e9;
        l = nullptr;
        r = nullptr;
    }
};
void update(node *&p, int pos, int val, int tl = 1, int tr = MXN){
    if(p == nullptr){
        p = new node();
    }
    if(tl == tr){
        p -> mn = max(p -> mn, val);
        return;
    }
    int mid = (tl + tr) >> 1;
    if(pos > mid)
        update(p -> r, pos, val, mid + 1, tr);
    else
        update(p -> l, pos, val, tl, mid);
    int left = -1e9;
    if(p -> l != nullptr)
        left = p -> l -> mn;
    int right = -1e9;
    if(p -> r != nullptr)
        right = p -> r -> mn;
    p -> mn = max(left, right);
}
int get(node *p, int l, int r, int tl = 1, int tr = MXN){
	if(p == nullptr){
		return -1e9;
    }
    if(tl > r || tr < l || l > r)
        return -1e9;
    if(tl >= l && tr <= r)
        return p -> mn;
    int mid = (tl + tr) >> 1;
    return max(get(p -> r, l, r, mid + 1, tr), get(p -> l, l, r, tl, mid));
}
int n;

void solve(vector <pair <int, pair <int,int > > > vp, int &ans){
	vector <pair <int,int > > pref(n);
	int pivot = 0;
	node *root = new node();
	for(int i = 0; i < n; i++){;
		while(pivot < i && vp[pivot].ff != vp[i].ff){
			pref[pivot] = {-inf, -inf};
			if(pivot)pref[pivot] = pref[pivot - 1];
			update(root, vp[pivot].ss.ff, vp[pivot].ss.ss);
			int x = get(root, 1, vp[pivot].ss.ff - 1);
			if(x > vp[pivot].ss.ss)
				pref[pivot] = max(pref[pivot], {vp[pivot].ss.ff, x});
			pivot++;
		}
		if(pivot > 0){
			if(pref[pivot - 1].ff > vp[i].ss.ff && pref[pivot - 1].ss > vp[i].ss.ss){
				ans = max(vp[i].ff + pref[pivot - 1].ff + pref[pivot - 1].ss , ans);
			}
		}
	}
}
main(){
	iostream::sync_with_stdio(false);	
    cin.tie(nullptr);
    cout.tie(nullptr);
    cin >> n;
	vector <pair <int, pair <int,int > > > vp(n);
	for(int i = 0; i < n; i++){
		cin >> vp[i].ff >> vp[i].ss.ff >> vp[i].ss.ss;
	}
	sort(all(vp));
	int ans = -1;
	solve(vp, ans);
	
	for(int i = 0; i < n; i++){
		swap(vp[i].ss.ff, vp[i].ss.ss);
	}
	cout <<  ans << endl;
}
/*
 * Before implementing the problem:
	
	Do I understand the problem correctly?
	Which places are tricky? What do I need to remember to implement them correctly?
	Which place is the heaviest by implementation? Can I do it simpler?
	Which place is the slowest? Where do I need to be careful about constant factors and where I can choose slower but simpler implementation?
	----------------------------------
	If not AC:
 
	Did you remember to do everything to handle the tricky places you thought about before?
	Is the solution correct?
	Do I understand the problem correctly?
	----------------------------------
	If you have a test on which the solution gives wrong answer:
 
	Is the solution doing what it was supposed to do?
	Is the problem in the code or in the idea?
*/

Compilation message

team.cpp:86:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   86 | main(){
      | ^~~~
team.cpp: In function 'void fp(std::string)':
team.cpp:15:29: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 | void fp(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
      |                      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
team.cpp:15:70: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 | void fp(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
      |                                                               ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 348 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 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 856 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 856 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 392 KB Output is correct

Subtask #2
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 348 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 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 856 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 856 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 392 KB Output is correct
26 Incorrect 6 ms 2652 KB Output isn't correct
27 Halted 0 ms 0 KB -

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 348 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 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 50 ms 9628 KB Output is correct
12 Correct 36 ms 6716 KB Output is correct
13 Correct 36 ms 7972 KB Output is correct
14 Correct 47 ms 10072 KB Output is correct
15 Correct 33 ms 9816 KB Output is correct
16 Correct 22 ms 9812 KB Output is correct

Subtask #4
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 348 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 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 50 ms 9628 KB Output is correct
12 Correct 36 ms 6716 KB Output is correct
13 Correct 36 ms 7972 KB Output is correct
14 Correct 47 ms 10072 KB Output is correct
15 Correct 33 ms 9816 KB Output is correct
16 Correct 22 ms 9812 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 63 ms 9620 KB Output is correct
23 Correct 58 ms 9556 KB Output is correct
24 Correct 45 ms 7508 KB Output is correct
25 Correct 61 ms 9824 KB Output is correct
26 Correct 35 ms 9624 KB Output is correct

Subtask #5
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 348 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 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 50 ms 9628 KB Output is correct
12 Correct 36 ms 6716 KB Output is correct
13 Correct 36 ms 7972 KB Output is correct
14 Correct 47 ms 10072 KB Output is correct
15 Correct 33 ms 9816 KB Output is correct
16 Correct 22 ms 9812 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 63 ms 9620 KB Output is correct
23 Correct 58 ms 9556 KB Output is correct
24 Correct 45 ms 7508 KB Output is correct
25 Correct 61 ms 9824 KB Output is correct
26 Correct 35 ms 9624 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 480 KB Output is correct
31 Correct 2 ms 604 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 71 ms 9192 KB Output is correct
35 Correct 64 ms 8980 KB Output is correct
36 Correct 70 ms 9808 KB Output is correct
37 Correct 68 ms 9564 KB Output is correct
38 Correct 37 ms 9552 KB Output is correct
39 Correct 17 ms 5980 KB Output is correct

Subtask #6
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 348 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 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 50 ms 9628 KB Output is correct
12 Correct 36 ms 6716 KB Output is correct
13 Correct 36 ms 7972 KB Output is correct
14 Correct 47 ms 10072 KB Output is correct
15 Correct 33 ms 9816 KB Output is correct
16 Correct 22 ms 9812 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 63 ms 9620 KB Output is correct
23 Correct 58 ms 9556 KB Output is correct
24 Correct 45 ms 7508 KB Output is correct
25 Correct 61 ms 9824 KB Output is correct
26 Correct 35 ms 9624 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 480 KB Output is correct
31 Correct 2 ms 604 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 71 ms 9192 KB Output is correct
35 Correct 64 ms 8980 KB Output is correct
36 Correct 70 ms 9808 KB Output is correct
37 Correct 68 ms 9564 KB Output is correct
38 Correct 37 ms 9552 KB Output is correct
39 Correct 17 ms 5980 KB Output is correct
40 Incorrect 2 ms 604 KB Output isn't correct
41 Halted 0 ms 0 KB -

Subtask #7
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 348 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 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 856 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 856 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 392 KB Output is correct
26 Incorrect 6 ms 2652 KB Output isn't correct
27 Halted 0 ms 0 KB -