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답안 #892602

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
892602 2023-12-25T15:07:33 Z vjudge1 Team Contest (JOI22_team) C++17
100 / 100
 346 ms 111348 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);
	}
	solve(vp, ans);
	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

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 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 0 ms 348 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 860 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 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 1 ms 604 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct

Subtask #2
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 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 0 ms 348 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 860 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 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 1 ms 604 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 9 ms 4700 KB Output is correct
27 Correct 7 ms 3164 KB Output is correct
28 Correct 7 ms 3164 KB Output is correct
29 Correct 6 ms 2652 KB Output is correct
30 Correct 3 ms 860 KB Output is correct
31 Correct 4 ms 860 KB Output is correct
32 Correct 4 ms 604 KB Output is correct
33 Correct 2 ms 724 KB Output is correct
34 Correct 8 ms 4700 KB Output is correct
35 Correct 2 ms 348 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 3 ms 860 KB Output is correct
38 Correct 4 ms 860 KB Output is correct
39 Correct 2 ms 348 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 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 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 84 ms 9848 KB Output is correct
12 Correct 54 ms 6668 KB Output is correct
13 Correct 52 ms 8708 KB Output is correct
14 Correct 71 ms 10512 KB Output is correct
15 Correct 41 ms 10608 KB Output is correct
16 Correct 24 ms 10416 KB Output is correct

Subtask #4
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 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 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 84 ms 9848 KB Output is correct
12 Correct 54 ms 6668 KB Output is correct
13 Correct 52 ms 8708 KB Output is correct
14 Correct 71 ms 10512 KB Output is correct
15 Correct 41 ms 10608 KB Output is correct
16 Correct 24 ms 10416 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 2 ms 604 KB Output is correct
22 Correct 97 ms 10396 KB Output is correct
23 Correct 93 ms 10552 KB Output is correct
24 Correct 70 ms 7868 KB Output is correct
25 Correct 90 ms 10580 KB Output is correct
26 Correct 44 ms 10400 KB Output is correct

Subtask #5
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 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 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 84 ms 9848 KB Output is correct
12 Correct 54 ms 6668 KB Output is correct
13 Correct 52 ms 8708 KB Output is correct
14 Correct 71 ms 10512 KB Output is correct
15 Correct 41 ms 10608 KB Output is correct
16 Correct 24 ms 10416 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 2 ms 604 KB Output is correct
22 Correct 97 ms 10396 KB Output is correct
23 Correct 93 ms 10552 KB Output is correct
24 Correct 70 ms 7868 KB Output is correct
25 Correct 90 ms 10580 KB Output is correct
26 Correct 44 ms 10400 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 4 ms 860 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 105 ms 10472 KB Output is correct
35 Correct 98 ms 9880 KB Output is correct
36 Correct 107 ms 10868 KB Output is correct
37 Correct 105 ms 10676 KB Output is correct
38 Correct 48 ms 10576 KB Output is correct
39 Correct 19 ms 6736 KB Output is correct

Subtask #6
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 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 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 84 ms 9848 KB Output is correct
12 Correct 54 ms 6668 KB Output is correct
13 Correct 52 ms 8708 KB Output is correct
14 Correct 71 ms 10512 KB Output is correct
15 Correct 41 ms 10608 KB Output is correct
16 Correct 24 ms 10416 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 2 ms 604 KB Output is correct
22 Correct 97 ms 10396 KB Output is correct
23 Correct 93 ms 10552 KB Output is correct
24 Correct 70 ms 7868 KB Output is correct
25 Correct 90 ms 10580 KB Output is correct
26 Correct 44 ms 10400 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 4 ms 860 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 105 ms 10472 KB Output is correct
35 Correct 98 ms 9880 KB Output is correct
36 Correct 107 ms 10868 KB Output is correct
37 Correct 105 ms 10676 KB Output is correct
38 Correct 48 ms 10576 KB Output is correct
39 Correct 19 ms 6736 KB Output is correct
40 Correct 4 ms 860 KB Output is correct
41 Correct 4 ms 860 KB Output is correct
42 Correct 4 ms 860 KB Output is correct
43 Correct 4 ms 860 KB Output is correct
44 Correct 132 ms 11392 KB Output is correct
45 Correct 125 ms 11524 KB Output is correct
46 Correct 136 ms 11624 KB Output is correct
47 Correct 129 ms 11860 KB Output is correct
48 Correct 54 ms 11116 KB Output is correct

Subtask #7
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 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 0 ms 348 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 860 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 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 1 ms 604 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 9 ms 4700 KB Output is correct
27 Correct 7 ms 3164 KB Output is correct
28 Correct 7 ms 3164 KB Output is correct
29 Correct 6 ms 2652 KB Output is correct
30 Correct 3 ms 860 KB Output is correct
31 Correct 4 ms 860 KB Output is correct
32 Correct 4 ms 604 KB Output is correct
33 Correct 2 ms 724 KB Output is correct
34 Correct 8 ms 4700 KB Output is correct
35 Correct 2 ms 348 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 3 ms 860 KB Output is correct
38 Correct 4 ms 860 KB Output is correct
39 Correct 2 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 0 ms 344 KB Output is correct
44 Correct 0 ms 348 KB Output is correct
45 Correct 0 ms 348 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 1 ms 344 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 84 ms 9848 KB Output is correct
51 Correct 54 ms 6668 KB Output is correct
52 Correct 52 ms 8708 KB Output is correct
53 Correct 71 ms 10512 KB Output is correct
54 Correct 41 ms 10608 KB Output is correct
55 Correct 24 ms 10416 KB Output is correct
56 Correct 0 ms 344 KB Output is correct
57 Correct 0 ms 348 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 1 ms 348 KB Output is correct
60 Correct 2 ms 604 KB Output is correct
61 Correct 97 ms 10396 KB Output is correct
62 Correct 93 ms 10552 KB Output is correct
63 Correct 70 ms 7868 KB Output is correct
64 Correct 90 ms 10580 KB Output is correct
65 Correct 44 ms 10400 KB Output is correct
66 Correct 1 ms 348 KB Output is correct
67 Correct 1 ms 348 KB Output is correct
68 Correct 1 ms 344 KB Output is correct
69 Correct 1 ms 348 KB Output is correct
70 Correct 4 ms 860 KB Output is correct
71 Correct 1 ms 348 KB Output is correct
72 Correct 1 ms 348 KB Output is correct
73 Correct 105 ms 10472 KB Output is correct
74 Correct 98 ms 9880 KB Output is correct
75 Correct 107 ms 10868 KB Output is correct
76 Correct 105 ms 10676 KB Output is correct
77 Correct 48 ms 10576 KB Output is correct
78 Correct 19 ms 6736 KB Output is correct
79 Correct 4 ms 860 KB Output is correct
80 Correct 4 ms 860 KB Output is correct
81 Correct 4 ms 860 KB Output is correct
82 Correct 4 ms 860 KB Output is correct
83 Correct 132 ms 11392 KB Output is correct
84 Correct 125 ms 11524 KB Output is correct
85 Correct 136 ms 11624 KB Output is correct
86 Correct 129 ms 11860 KB Output is correct
87 Correct 54 ms 11116 KB Output is correct
88 Correct 346 ms 111248 KB Output is correct
89 Correct 266 ms 71392 KB Output is correct
90 Correct 316 ms 77712 KB Output is correct
91 Correct 249 ms 61864 KB Output is correct
92 Correct 159 ms 14948 KB Output is correct
93 Correct 170 ms 25444 KB Output is correct
94 Correct 154 ms 19048 KB Output is correct
95 Correct 61 ms 11888 KB Output is correct
96 Correct 246 ms 111348 KB Output is correct
97 Correct 38 ms 11936 KB Output is correct
98 Correct 109 ms 17512 KB Output is correct
99 Correct 151 ms 17580 KB Output is correct