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Submission #702657

# Submission time Handle Problem Language Result Execution time Memory
702657 2023-02-24T17:41:24 Z a_aguilo Fancy Fence (CEOI20_fancyfence) C++14
100 / 100
 99 ms 5448 KB 
#include<bits/stdc++.h>
 
using namespace std;
 
int n;
int MOD = 1e9 + 7;
 
long long calcOwnRectangles(long long int h, long long int w, long long int addition){
	long long chooseH = (h*(h+1)/2)%MOD;
	long long chooseW = ((w*(w+1)/2)%MOD + (addition*w)%MOD )%MOD;
	long long ans = (chooseH*chooseW)%MOD;
	return ans;
}
 
long long getEndings(long long h, long long w){
	long long WOptions = w;
	long long HOptions = (h*(h+1)/2)%MOD;
	long long ans = (WOptions*HOptions)%MOD;
	return ans;
}
 
int main(){
	cin >> n;
	int heights[n];
	int widths[n];
	long long dp[n];
	long long int ans = 0;
	for(int i = 0; i < n; ++i) cin >> heights[i];
	for(int i = 0; i < n; ++i) cin >> widths[i];
	vector<pair<long long int, long long int>> MyStack;
	MyStack.reserve(n);
	for(int i = 0; i < n; ++i){
		long long int myH = heights[i];
		long long int myW = widths[i];
		long long addW = 0;
		int lPos = MyStack.size()-1;
		while(lPos >= 0 and MyStack[lPos].first > myH){
			addW += MyStack[lPos].second;
			addW %= MOD;
			MyStack.pop_back();
			lPos = MyStack.size()-1;
		}
		MyStack.push_back({myH, myW+addW});
		long long indepRectangles = calcOwnRectangles(myH, myW, addW);
		ans += indepRectangles;
		ans %= MOD;
		//cout << myH << " " << myW << " "<< ans << endl;
		dp[MyStack.size()-1] = getEndings(myH, (myW+addW)%MOD);
		if(MyStack.size() == 1){
			//Este es el primero
			continue;
		}else{
			//Este NO es el primero --> para los rectángulos se pueden continuar los que acaban en el anterior
			ans += (dp[MyStack.size()-2]*myW)%MOD;
			ans %= MOD;
			//Tambien se puede hacer que el numero de los que acaban en esta posicion incorpore los que acaban en la anterior
			dp[MyStack.size()-1] += dp[MyStack.size()-2];
			dp[MyStack.size()-1] %= MOD;
		}
		//cout << myH << " " << ans << endl;
 
	}
	cout << ans << endl;
	return 0;
}

Subtask #1
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 328 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 300 KB Output is correct
2 Correct 1 ms 300 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 300 KB Output is correct
2 Correct 2 ms 212 KB Output is correct
3 Correct 35 ms 1896 KB Output is correct
4 Correct 57 ms 4264 KB Output is correct
5 Correct 54 ms 3608 KB Output is correct
6 Correct 54 ms 3100 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 8 ms 724 KB Output is correct
3 Correct 43 ms 2708 KB Output is correct
4 Correct 80 ms 5280 KB Output is correct
5 Correct 85 ms 5400 KB Output is correct
6 Correct 1 ms 212 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 2 ms 340 KB Output is correct
3 Correct 9 ms 812 KB Output is correct
4 Correct 39 ms 2716 KB Output is correct
5 Correct 82 ms 5276 KB Output is correct
6 Correct 91 ms 5448 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 8 ms 724 KB Output is correct
9 Correct 42 ms 2848 KB Output is correct
10 Correct 77 ms 5148 KB Output is correct
11 Correct 80 ms 5276 KB Output is correct
12 Correct 1 ms 212 KB Output is correct

Subtask #6
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 296 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 308 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 300 KB Output is correct
12 Correct 1 ms 312 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 0 ms 296 KB Output is correct

Subtask #7
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 2 ms 212 KB Output is correct
5 Correct 1 ms 296 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 252 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 2 ms 312 KB Output is correct
11 Correct 29 ms 1908 KB Output is correct
12 Correct 55 ms 4252 KB Output is correct
13 Correct 57 ms 3616 KB Output is correct
14 Correct 57 ms 3148 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 8 ms 724 KB Output is correct
17 Correct 44 ms 2824 KB Output is correct
18 Correct 80 ms 5328 KB Output is correct
19 Correct 80 ms 5416 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 8 ms 776 KB Output is correct
22 Correct 41 ms 2764 KB Output is correct
23 Correct 76 ms 5148 KB Output is correct
24 Correct 81 ms 5280 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 1 ms 256 KB Output is correct
27 Correct 2 ms 332 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 2 ms 340 KB Output is correct
30 Correct 9 ms 596 KB Output is correct
31 Correct 9 ms 568 KB Output is correct
32 Correct 37 ms 1876 KB Output is correct
33 Correct 43 ms 1996 KB Output is correct
34 Correct 74 ms 3484 KB Output is correct
35 Correct 73 ms 3508 KB Output is correct
36 Correct 80 ms 3748 KB Output is correct
37 Correct 77 ms 3740 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 82 ms 3868 KB Output is correct
40 Correct 99 ms 3736 KB Output is correct
41 Correct 78 ms 3916 KB Output is correct
42 Correct 83 ms 4512 KB Output is correct