oj.uz

Submission #843338

# Submission time Handle Problem Language Result Execution time Memory
843338 2023-09-03T23:13:37 Z pera Colouring a rectangle (eJOI19_colouring) C++17
100 / 100
 407 ms 74780 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long

const int N = 4e5;
vector<int> t(4 * N) , lz(4 * N);

void push(int u){
	t[u * 2] += lz[u];
	t[u * 2 + 1] += lz[u];
	lz[u * 2] += lz[u];
	lz[u * 2 + 1] += lz[u];
	lz[u] = 0;
}

void make_new(int n){
	for(int i = 0;i <= 4 * n;i ++){
		t[i] = lz[i] = 0;
	}
}
void pos_assign(int u , int l , int r , int pos , int val){
	if(l == r){
		t[u] = val;
		return;
	}
	push(u);
	int m = (l + r) / 2;
	if(pos <= m) pos_assign(u * 2 , l , m , pos , val);
	else pos_assign(u * 2 + 1 , m + 1 , r , pos , val);
	t[u] = max(t[u * 2] , t[u * 2 + 1]);
}
void range_add(int u , int l , int r , int L , int R , int val){
	if(l > r || r < L || l > R) return;
	if(L <= l && r <= R){
		t[u] += val;
		lz[u] += val;
		return;
	}
	push(u);
	int m = (l + r) / 2;
	range_add(u * 2 , l , m , L , R , val);
	range_add(u * 2 + 1 , m + 1 , r , L , R , val);
	t[u] = max(t[u * 2] , t[u * 2 + 1]);
}

int get_max(int u , int l , int r , int L , int R){
	if(l > r || r < L || l > R) return 0;
	if(L <= l && r <= R) return t[u];
	push(u);
	int m = (l + r) / 2;
	return max(get_max(u * 2 , l , m , L , R) , get_max(u * 2 + 1 , m + 1 , r , L , R));
}

void pos_assign(int pos , int val , int n){
	if(pos < 0 || n - 1 < pos) return;
	pos_assign(1 , 0 , n , pos , val);
}

void range_add(int l , int r , int val , int n){
	if(r < l) return;
	range_add(1 , 0 , n , l , r , val);
}

int get_max(int l , int r , int n){
	if(r < l) return 0LL;
	return get_max(1 , 0 , n , l , r);
}

main(){
	ios::sync_with_stdio(0);
	cin.tie(0),cout.tie(0);
	int n , m;cin >> n >> m;
	vector<int> d1(N) , d2(N) , sz(N); 
	vector<int> f[2];
	vector<vector<vector<pair<int , int>>>> cost(2 , vector<vector<pair<int , int>>>((N)));
	for(int i = 0;i < n + m - 1;i ++){
		cin >> d1[i];
		f[i % 2].push_back(d1[i]);
		if(i < min(n , m)) sz[i] = i + 1;
		if(min(n , m) <= i && i < max(n , m)) sz[i] = sz[i - 1];
		if(i >= max(n , m)) sz[i] = sz[i - 1] - 1;
	}
	int parity;
	for(int i = 0;i < n + m - 1;i ++){
		cin >> d2[i];
		int st = abs(m - i - 1);
		if(i % 2 == 0) parity = st % 2;
		st /= 2;/*
		cout << i << " " << st << "  " << st + sz[i] - 1 << "    " << parity << endl;*/
		cost[i % 2][st + sz[i] - 1].push_back({d2[i] , st});
	}
	int ans = 0;
	for(int w = 0;w < 2;w ++){
		int par = (parity ^ (w == 1)) , all_cost = 0 , N = (int)f[w].size();/*
		cout << "par W: " << w << "    par: " << par << endl; */
		make_new(N);/*
		cout << "SZ: " << N << endl;*/
		for(int i = 0;i < N;i ++){
			int all = get_max(0 , i - 1 , N);
			pos_assign(i , all + f[w][i] , N);
			for(int k = 0;k < cost[par][i].size();k ++){
				int end = cost[par][i][k].second;
				int Cost = -cost[par][i][k].first;
				range_add(end , i , Cost , N);
			}
			all_cost += f[w][i];
		}/*
		cout << "MN: ";
		cout << get_max(0 , N - 1 , N) << endl;*/
		ans += all_cost - max(0LL , get_max(0 , N - 1 , N));
	}
	cout << ans << endl;
}

Compilation message

colouring.cpp:70:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   70 | main(){
      | ^~~~
colouring.cpp: In function 'int main()':
colouring.cpp:102:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  102 |    for(int k = 0;k < cost[par][i].size();k ++){
      |                  ~~^~~~~~~~~~~~~~~~~~~~~
colouring.cpp:95:7: warning: 'parity' may be used uninitialized in this function [-Wmaybe-uninitialized]
   95 |   int par = (parity ^ (w == 1)) , all_cost = 0 , N = (int)f[w].size();/*
      |       ^~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 63064 KB Output is correct
2 Correct 15 ms 63012 KB Output is correct
3 Correct 15 ms 63068 KB Output is correct
4 Correct 15 ms 63064 KB Output is correct
5 Correct 16 ms 63064 KB Output is correct
6 Correct 16 ms 63064 KB Output is correct
7 Correct 17 ms 63068 KB Output is correct
8 Correct 16 ms 62976 KB Output is correct
9 Correct 16 ms 63064 KB Output is correct
10 Correct 16 ms 63320 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 63064 KB Output is correct
2 Correct 15 ms 63012 KB Output is correct
3 Correct 15 ms 63068 KB Output is correct
4 Correct 15 ms 63064 KB Output is correct
5 Correct 16 ms 63064 KB Output is correct
6 Correct 16 ms 63064 KB Output is correct
7 Correct 17 ms 63068 KB Output is correct
8 Correct 16 ms 62976 KB Output is correct
9 Correct 16 ms 63064 KB Output is correct
10 Correct 16 ms 63320 KB Output is correct
11 Correct 15 ms 63320 KB Output is correct
12 Correct 17 ms 63064 KB Output is correct
13 Correct 16 ms 63072 KB Output is correct
14 Correct 18 ms 63064 KB Output is correct
15 Correct 16 ms 63064 KB Output is correct
16 Correct 15 ms 63064 KB Output is correct
17 Correct 15 ms 62952 KB Output is correct
18 Correct 15 ms 63064 KB Output is correct
19 Correct 19 ms 63036 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 63064 KB Output is correct
2 Correct 15 ms 63012 KB Output is correct
3 Correct 15 ms 63068 KB Output is correct
4 Correct 15 ms 63064 KB Output is correct
5 Correct 16 ms 63064 KB Output is correct
6 Correct 16 ms 63064 KB Output is correct
7 Correct 17 ms 63068 KB Output is correct
8 Correct 16 ms 62976 KB Output is correct
9 Correct 16 ms 63064 KB Output is correct
10 Correct 16 ms 63320 KB Output is correct
11 Correct 15 ms 63320 KB Output is correct
12 Correct 17 ms 63064 KB Output is correct
13 Correct 16 ms 63072 KB Output is correct
14 Correct 18 ms 63064 KB Output is correct
15 Correct 16 ms 63064 KB Output is correct
16 Correct 15 ms 63064 KB Output is correct
17 Correct 15 ms 62952 KB Output is correct
18 Correct 15 ms 63064 KB Output is correct
19 Correct 19 ms 63036 KB Output is correct
20 Correct 15 ms 63068 KB Output is correct
21 Correct 16 ms 63064 KB Output is correct
22 Correct 15 ms 63068 KB Output is correct
23 Correct 19 ms 63320 KB Output is correct
24 Correct 15 ms 63064 KB Output is correct
25 Correct 15 ms 63064 KB Output is correct
26 Correct 15 ms 63064 KB Output is correct
27 Correct 16 ms 63064 KB Output is correct
28 Correct 16 ms 63064 KB Output is correct
29 Correct 15 ms 63064 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 63064 KB Output is correct
2 Correct 15 ms 63012 KB Output is correct
3 Correct 15 ms 63068 KB Output is correct
4 Correct 15 ms 63064 KB Output is correct
5 Correct 16 ms 63064 KB Output is correct
6 Correct 16 ms 63064 KB Output is correct
7 Correct 17 ms 63068 KB Output is correct
8 Correct 16 ms 62976 KB Output is correct
9 Correct 16 ms 63064 KB Output is correct
10 Correct 16 ms 63320 KB Output is correct
11 Correct 15 ms 63320 KB Output is correct
12 Correct 17 ms 63064 KB Output is correct
13 Correct 16 ms 63072 KB Output is correct
14 Correct 18 ms 63064 KB Output is correct
15 Correct 16 ms 63064 KB Output is correct
16 Correct 15 ms 63064 KB Output is correct
17 Correct 15 ms 62952 KB Output is correct
18 Correct 15 ms 63064 KB Output is correct
19 Correct 19 ms 63036 KB Output is correct
20 Correct 15 ms 63068 KB Output is correct
21 Correct 16 ms 63064 KB Output is correct
22 Correct 15 ms 63068 KB Output is correct
23 Correct 19 ms 63320 KB Output is correct
24 Correct 15 ms 63064 KB Output is correct
25 Correct 15 ms 63064 KB Output is correct
26 Correct 15 ms 63064 KB Output is correct
27 Correct 16 ms 63064 KB Output is correct
28 Correct 16 ms 63064 KB Output is correct
29 Correct 15 ms 63064 KB Output is correct
30 Correct 18 ms 63064 KB Output is correct
31 Correct 19 ms 63068 KB Output is correct
32 Correct 18 ms 63068 KB Output is correct
33 Correct 18 ms 63068 KB Output is correct
34 Correct 17 ms 63100 KB Output is correct
35 Correct 16 ms 63068 KB Output is correct
36 Correct 16 ms 63068 KB Output is correct
37 Correct 16 ms 63032 KB Output is correct
38 Correct 17 ms 63068 KB Output is correct
39 Correct 16 ms 63068 KB Output is correct
40 Correct 17 ms 63068 KB Output is correct
41 Correct 17 ms 63068 KB Output is correct
42 Correct 16 ms 63068 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 142 ms 63064 KB Output is correct
2 Correct 158 ms 65396 KB Output is correct
3 Correct 144 ms 65200 KB Output is correct
4 Correct 146 ms 65456 KB Output is correct
5 Correct 145 ms 65716 KB Output is correct
6 Correct 145 ms 64792 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 365 ms 66736 KB Output is correct
2 Correct 376 ms 74556 KB Output is correct
3 Correct 374 ms 74512 KB Output is correct
4 Correct 372 ms 74780 KB Output is correct
5 Correct 378 ms 74676 KB Output is correct
6 Correct 356 ms 71604 KB Output is correct
7 Correct 374 ms 74156 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 63064 KB Output is correct
2 Correct 15 ms 63012 KB Output is correct
3 Correct 15 ms 63068 KB Output is correct
4 Correct 15 ms 63064 KB Output is correct
5 Correct 16 ms 63064 KB Output is correct
6 Correct 16 ms 63064 KB Output is correct
7 Correct 17 ms 63068 KB Output is correct
8 Correct 16 ms 62976 KB Output is correct
9 Correct 16 ms 63064 KB Output is correct
10 Correct 16 ms 63320 KB Output is correct
11 Correct 15 ms 63320 KB Output is correct
12 Correct 17 ms 63064 KB Output is correct
13 Correct 16 ms 63072 KB Output is correct
14 Correct 18 ms 63064 KB Output is correct
15 Correct 16 ms 63064 KB Output is correct
16 Correct 15 ms 63064 KB Output is correct
17 Correct 15 ms 62952 KB Output is correct
18 Correct 15 ms 63064 KB Output is correct
19 Correct 19 ms 63036 KB Output is correct
20 Correct 15 ms 63068 KB Output is correct
21 Correct 16 ms 63064 KB Output is correct
22 Correct 15 ms 63068 KB Output is correct
23 Correct 19 ms 63320 KB Output is correct
24 Correct 15 ms 63064 KB Output is correct
25 Correct 15 ms 63064 KB Output is correct
26 Correct 15 ms 63064 KB Output is correct
27 Correct 16 ms 63064 KB Output is correct
28 Correct 16 ms 63064 KB Output is correct
29 Correct 15 ms 63064 KB Output is correct
30 Correct 18 ms 63064 KB Output is correct
31 Correct 19 ms 63068 KB Output is correct
32 Correct 18 ms 63068 KB Output is correct
33 Correct 18 ms 63068 KB Output is correct
34 Correct 17 ms 63100 KB Output is correct
35 Correct 16 ms 63068 KB Output is correct
36 Correct 16 ms 63068 KB Output is correct
37 Correct 16 ms 63032 KB Output is correct
38 Correct 17 ms 63068 KB Output is correct
39 Correct 16 ms 63068 KB Output is correct
40 Correct 17 ms 63068 KB Output is correct
41 Correct 17 ms 63068 KB Output is correct
42 Correct 16 ms 63068 KB Output is correct
43 Correct 142 ms 63064 KB Output is correct
44 Correct 158 ms 65396 KB Output is correct
45 Correct 144 ms 65200 KB Output is correct
46 Correct 146 ms 65456 KB Output is correct
47 Correct 145 ms 65716 KB Output is correct
48 Correct 145 ms 64792 KB Output is correct
49 Correct 365 ms 66736 KB Output is correct
50 Correct 376 ms 74556 KB Output is correct
51 Correct 374 ms 74512 KB Output is correct
52 Correct 372 ms 74780 KB Output is correct
53 Correct 378 ms 74676 KB Output is correct
54 Correct 356 ms 71604 KB Output is correct
55 Correct 374 ms 74156 KB Output is correct
56 Correct 150 ms 64840 KB Output is correct
57 Correct 152 ms 65088 KB Output is correct
58 Correct 152 ms 65204 KB Output is correct
59 Correct 158 ms 64112 KB Output is correct
60 Correct 156 ms 65452 KB Output is correct
61 Correct 157 ms 65592 KB Output is correct
62 Correct 155 ms 63876 KB Output is correct
63 Correct 163 ms 65204 KB Output is correct
64 Correct 178 ms 65464 KB Output is correct
65 Correct 196 ms 65768 KB Output is correct
66 Correct 210 ms 66736 KB Output is correct
67 Correct 233 ms 67764 KB Output is correct
68 Correct 370 ms 71784 KB Output is correct
69 Correct 407 ms 73532 KB Output is correct
70 Correct 282 ms 70644 KB Output is correct