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Submission #922051

# Submission time Handle Problem Language Result Execution time Memory
922051 2024-02-04T22:29:33 Z Alebn Fancy Fence (CEOI20_fancyfence) C++14
45 / 100
 1000 ms 2040 KB 
#include <bits/stdc++.h>
 
#define int long long
#define sz(x) (int)(x.size())
 
using namespace std;
 
const int mod=1000000007;
 
int MOD(int x) {
	return (x+3*mod)%mod;
}
 
struct sections {
	int H=0, W=0;
};
 
int n;
vector<sections> a;
 
int section(int h, int w) {
	h%=mod, w%=mod;
	int facteur=MOD((h*(h+1))/2);
	int ans=MOD((w*(w+1))/2);
	return MOD(ans*facteur);
}
 
int subtask5() {
	int ans=0;
	for (int i=0; i<n; i++) {
		int mini=a[i].H;
		int sum=a[i].W;
		ans=MOD(ans+section(a[i].W, a[i].H)); //i=j
		for (int j=i+1; j<n; j++) { //i!=j
			mini=min(mini, a[j].H);
			int res=section(mini, sum); // toute la section entre i et j
			res-=MOD(section(mini, sum-a[i].W)+section(mini, sum-a[j].W)); // j'enlève tous les points qui ne commencent pas
			res=MOD(res);                                             // par j ou par i
			res+=section(mini, sum-a[i].W-a[j].W);                    // je rajoute ce que j'ai enlevé de trop (a+b)^2
			ans=MOD(ans+MOD(res));
		}
	}
	return ans;
}
 
int solve() {
	cin >> n;
	a.clear();
	a.resize(n);
	for (auto &u: a) cin >> u.H;
	for (auto &u: a) cin >> u.W;
	vector<sections> temp;
	for (int i=0; i<n; i++) {
		if (!temp.empty() && a[i].H==temp.back().H) temp.back().W+=a[i].W;
		else temp.push_back(a[i]);
	}
	a.clear();
	a=temp;
	n=a.size();
	return subtask5();
}
 
 
signed main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout << solve() << endl;
	return 0;
}

Subtask #1
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 10 ms 344 KB Output is correct

Subtask #2
12.0 / 12.0

# 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 1 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 3 ms 348 KB Output is correct
3 Execution timed out 1031 ms 1760 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 2 ms 604 KB Output is correct
3 Correct 8 ms 1252 KB Output is correct
4 Correct 15 ms 1884 KB Output is correct
5 Correct 16 ms 1884 KB Output is correct
6 Correct 1 ms 348 KB Output is correct

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 2 ms 604 KB Output is correct
4 Correct 8 ms 1256 KB Output is correct
5 Correct 19 ms 2040 KB Output is correct
6 Correct 15 ms 2032 KB Output is correct
7 Correct 11 ms 348 KB Output is correct
8 Correct 992 ms 896 KB Output is correct
9 Execution timed out 1095 ms 1756 KB Time limit exceeded
10 Halted 0 ms 0 KB -

Subtask #6
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 11 ms 504 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 1 ms 348 KB Output is correct
8 Correct 3 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 10 ms 344 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 3 ms 484 KB Output is correct
13 Correct 11 ms 348 KB Output is correct
14 Correct 11 ms 348 KB Output is correct
15 Correct 11 ms 504 KB Output is correct
16 Correct 0 ms 348 KB Output is correct

Subtask #7
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 10 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 11 ms 508 KB Output is correct
5 Correct 0 ms 344 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 3 ms 348 KB Output is correct
11 Execution timed out 1084 ms 2016 KB Time limit exceeded
12 Halted 0 ms 0 KB -