oj.uz

답안 #624853

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
624853 2022-08-08T21:17:16 Z QwertyPi Sandcastle 2 (JOI22_ho_t5) C++14
71 / 100
 1239 ms 1048576 KB 
#include <bits/stdc++.h>
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("Ofast")
using namespace std;

const int N = 15013;
const int SQ = 240;
int a[200013];
int b[200013];
bool f[200013];
int s[200013];
int h, w;
inline int id(int i, int j){
	return i * (w + 1) + j;
}
inline int id2(int i, int j){
	return j * (h + 1) + i;
}

inline int qry(int x1, int x2, int y1, int y2){
	return s[id(x2 + 1, y2 + 1)] + s[id(x1, y1)] - s[id(x2 + 1, y1)] - s[id(x1, y2 + 1)];
}

struct PartialSum2D{
	vector<vector<short>> a, ps;
	PartialSum2D() = default;
	PartialSum2D(int n, int m){
		a = ps = vector<vector<short>>(n + 1, vector<short>(m + 1));
	}
	void upd(int x1, int x2, int y1, int y2, int v){
		a[x2 + 1][y2 + 1] += v;
		a[x1][y2 + 1] -= v;
		a[x2 + 1][y1] -= v;
		a[x1][y1] += v;
	}
	void run(int n){
		for(int i = 1; i <= n; i++){
			for(int j = 1; j <= n; j++){
				ps[i][j] = ps[i - 1][j] + ps[i][j - 1] - ps[i - 1][j - 1] + a[i - 1][j - 1];
			}
		}
	}
	int qry(int x, int y){
		return ps[x + 1][y + 1];
	}
};

int32_t main(){
	cin.tie(0); cout.tie(0);
	ios_base::sync_with_stdio(false);
	
	cin >> h >> w;
	for(int i = 0; i < h; i++){
		for(int j = 0; j < w; j++){
			cin >> a[id(i, j)];
		}
	}
	if(h > w){
		for(int i = 0; i < h; i++){
			for(int j = 0; j < w; j++){
				b[id2(i, j)] = a[id(i, j)];
			}
		}
		for(int i = 0; i < h; i++){
			for(int j = 0; j < w; j++){
				a[id2(i, j)] = b[id2(i, j)];
			}
		}
		swap(w, h);
	}
	{
		set<int> S; map<int, int> M;
		for(int i = 0; i < h; i++){
			for(int j = 0; j < w; j++){
				S.insert(a[id(i, j)]);
			}
		}
		int idx = 0;
		for(auto j : S){
			M[j] = idx++;
		}
		for(int i = 0; i < h; i++){
			for(int j = 0; j < w; j++){
				a[id(i, j)] = M[a[id(i, j)]];
			}
		}
	}
	
	PartialSum2D ps[h][h];
	for(int x1 = 0; x1 < h; x1++){
		for(int x2 = x1; x2 < h; x2++){
			ps[x1][x2] = PartialSum2D(w, w);
		}
	}
	int ans = 0;
	for(int i = 0; i < h; i++){
		for(int j = 0; j < w - 1; j++){
			int v1 = a[id(i, j)], v2 = a[id(i, j + 1)];
			if(v1 > v2) swap(v1, v2);
			for(int x = 0; x < h; x++){
				for(int y = 0; y < w; y++){
					f[id(x, y)] = a[id(x, y)] > v1 && a[id(x, y)] < v2;
				}
			}
			for(int x = 0; x < h; x++){
				for(int y = 0; y < w; y++){
					s[id(x + 1, y + 1)] = s[id(x + 1, y)] + s[id(x, y + 1)] - s[id(x, y)] + f[id(x, y)];
				}
			}
			int x1 = i, x2 = i, y1 = j, y2 = j + 1;
			for(int x3 = 0; x3 <= x1; x3++){
				int y3 = 0, y4 = w - 1;
				for(int x4 = x2; x4 < h; x4++){
					if(qry(x3, x4, y1, y2)) continue;
					while(qry(x3, x4, y3, y1)) y3++;
					while(qry(x3, x4, y2, y4)) y4--;
					ps[x3][x4].upd(y3, y1, y2, y4, 1);
				}
			}
		}
	}

	for(int i = 0; i < h - 1; i++){
		for(int j = 0; j < w; j++){
			int v1 = a[id(i, j)], v2 = a[id(i + 1, j)];
			if(v1 > v2) swap(v1, v2);
			for(int x = 0; x < h; x++){
				for(int y = 0; y < w; y++){
					f[id(x, y)] = a[id(x, y)] > v1 && a[id(x, y)] < v2;
				}
			}
			for(int x = 0; x < h; x++){
				for(int y = 0; y < w; y++){
					s[id(x + 1, y + 1)] = s[id(x + 1, y)] + s[id(x, y + 1)] - s[id(x, y)] + f[id(x, y)];
				}
			}
			int x1 = i, x2 = i + 1, y1 = j, y2 = j;
			for(int x3 = 0; x3 <= x1; x3++){
				int y3 = 0, y4 = w - 1;
				for(int x4 = x2; x4 < h; x4++){
					if(qry(x3, x4, y1, y2)) continue;
					while(qry(x3, x4, y3, y1)) y3++;
					while(qry(x3, x4, y2, y4)) y4--;
					ps[x3][x4].upd(y3, y1, y2, y4, 1);
				}
			}
		}
	}
	for(int x1 = 0; x1 < h; x1++){
		for(int x2 = x1; x2 < h; x2++){
			ps[x1][x2].run(w);
			for(int y1 = 0; y1 < w; y1++){
				for(int y2 = y1; y2 < w; y2++){
					ans += ps[x1][x2].qry(y1, y2) == (x2 - x1 + 1) * (y2 - y1 + 1) - 1;
				}
			}
		}
	}
	cout << ans << endl;
}

Subtask #1
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Runtime error 430 ms 1048576 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct

Subtask #3
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 12 ms 9304 KB Output is correct
8 Correct 12 ms 9344 KB Output is correct
9 Correct 15 ms 6740 KB Output is correct
10 Correct 21 ms 6612 KB Output is correct
11 Correct 10 ms 7184 KB Output is correct
12 Correct 10 ms 7124 KB Output is correct
13 Correct 21 ms 7232 KB Output is correct
14 Correct 10 ms 3924 KB Output is correct
15 Correct 18 ms 6744 KB Output is correct
16 Correct 16 ms 6740 KB Output is correct

Subtask #4
56.0 / 56.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 12 ms 9304 KB Output is correct
8 Correct 12 ms 9344 KB Output is correct
9 Correct 15 ms 6740 KB Output is correct
10 Correct 21 ms 6612 KB Output is correct
11 Correct 10 ms 7184 KB Output is correct
12 Correct 10 ms 7124 KB Output is correct
13 Correct 21 ms 7232 KB Output is correct
14 Correct 10 ms 3924 KB Output is correct
15 Correct 18 ms 6744 KB Output is correct
16 Correct 16 ms 6740 KB Output is correct
17 Correct 196 ms 192904 KB Output is correct
18 Correct 260 ms 112368 KB Output is correct
19 Correct 221 ms 108252 KB Output is correct
20 Correct 1239 ms 119656 KB Output is correct
21 Correct 742 ms 115476 KB Output is correct
22 Correct 867 ms 115592 KB Output is correct
23 Correct 799 ms 111348 KB Output is correct
24 Correct 546 ms 92268 KB Output is correct
25 Correct 757 ms 117716 KB Output is correct
26 Correct 852 ms 124292 KB Output is correct
27 Correct 382 ms 117824 KB Output is correct
28 Correct 436 ms 124296 KB Output is correct

Subtask #5
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 12 ms 9304 KB Output is correct
8 Correct 12 ms 9344 KB Output is correct
9 Correct 15 ms 6740 KB Output is correct
10 Correct 21 ms 6612 KB Output is correct
11 Correct 10 ms 7184 KB Output is correct
12 Correct 10 ms 7124 KB Output is correct
13 Correct 21 ms 7232 KB Output is correct
14 Correct 10 ms 3924 KB Output is correct
15 Correct 18 ms 6744 KB Output is correct
16 Correct 16 ms 6740 KB Output is correct
17 Correct 196 ms 192904 KB Output is correct
18 Correct 260 ms 112368 KB Output is correct
19 Correct 221 ms 108252 KB Output is correct
20 Correct 1239 ms 119656 KB Output is correct
21 Correct 742 ms 115476 KB Output is correct
22 Correct 867 ms 115592 KB Output is correct
23 Correct 799 ms 111348 KB Output is correct
24 Correct 546 ms 92268 KB Output is correct
25 Correct 757 ms 117716 KB Output is correct
26 Correct 852 ms 124292 KB Output is correct
27 Correct 382 ms 117824 KB Output is correct
28 Correct 436 ms 124296 KB Output is correct
29 Runtime error 414 ms 1048576 KB Execution killed with signal 9
30 Halted 0 ms 0 KB -