oj.uz

Submission #158474

# Submission time Handle Problem Language Result Execution time Memory
158474 2019-10-17T09:23:33 Z maruii None (KOI17_shell) C++14
46 / 100
 360 ms 26912 KB 
#include <bits/stdc++.h>
using namespace std;

int N, f[1505][1505], A[1505][1505], ys[1505], ye[1505];

struct BIT {
	int A[1505];
	void update(int x, int v) {
		x++;
		for (; x; x -= x & -x) A[x] += v;
	}
	void update(int s, int e, int v) {
		update(e, v);
		update(s - 1, -v);
	}
	int query(int x) {
		x++;
		int ret = 0;
		for (; x < 1505; x += x & -x) ret += A[x];
		return ret;
	}
} fen[1505];

inline int query(int x, int y) { return f[x][y] + fen[x].query(y); }
void up(int x, int y, int c) {
	ye[x] = y;
	while (1) {
		int t = 0;
		if ((c > 0 && y < N && query(x, y + 1) == query(x, y) + A[x][y + 1]) || (c < 0 && y < N && query(x, y + 1) != query(x - 1, y + 1) + A[x][y + 1])) y++;
		else x++;
		if (x > N) break;
		ye[x] = y;
	}
}


void lo(int x, int y, int c) {
	ys[x] = y;
	while (1) {
		int t = 0;
		if ((c > 0 && x < N && query(x + 1, y) == query(x, y) + A[x + 1][y]) || (c < 0 && x < N && query(x + 1, y) != query(x + 1, y - 1) + A[x + 1][y])) x++;
		else y++;
		if (y > N) break;
		ys[x] = min(ys[x], y);
	}
}

int main() {
	ios_base::sync_with_stdio(0), cin.tie(0);
	cin >> N;
	long long cost = 0;
	for (int i = 1; i <= N; ++i) for (int j = 1; j <= N; ++j) {
		cin >> A[i][j];
		f[i][j] = A[i][j] + max(f[i - 1][j], f[i][j - 1]);
		cost += f[i][j];
	}

	printf("%lld\n", cost);
	ys[N + 1] = 1;
	for (int T = 0; T < N; ++T) {
		char c; int x, y; cin >> c >> x >> y;
		fill(ys + x, ys + N + 1, N + 1);
		fill(ye + x, ye + N + 1, 0);
		int t = c == 'U' ? 1 : -1;
		up(x, y, t);
		lo(x, y, t);
		for (int i = x; ys[i] <= ye[i]; ++i) {
			fen[i].update(ys[i], ye[i], t);
			cost += t * (ye[i] - ys[i] + 1);
		}
		A[x][y] += t;
		printf("%lld\n", cost);
	}
	return 0;
}

Compilation message

shell.cpp: In function 'void up(int, int, int)':
shell.cpp:28:7: warning: unused variable 't' [-Wunused-variable]
   int t = 0;
       ^
shell.cpp: In function 'void lo(int, int, int)':
shell.cpp:40:7: warning: unused variable 't' [-Wunused-variable]
   int t = 0;
       ^

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1656 KB Output is correct
2 Correct 5 ms 1656 KB Output is correct
3 Correct 5 ms 1656 KB Output is correct
4 Correct 5 ms 1656 KB Output is correct
5 Correct 5 ms 1656 KB Output is correct
6 Correct 5 ms 1656 KB Output is correct
7 Correct 5 ms 1660 KB Output is correct
8 Correct 5 ms 1628 KB Output is correct
9 Correct 5 ms 1656 KB Output is correct
10 Correct 5 ms 1684 KB Output is correct

Subtask #2
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 206 ms 20524 KB Output is correct
2 Correct 191 ms 20624 KB Output is correct
3 Correct 269 ms 26872 KB Output is correct
4 Correct 296 ms 18936 KB Output is correct
5 Correct 280 ms 19064 KB Output is correct
6 Correct 197 ms 20600 KB Output is correct
7 Correct 193 ms 20600 KB Output is correct
8 Correct 302 ms 18936 KB Output is correct
9 Correct 297 ms 19064 KB Output is correct
10 Correct 275 ms 19044 KB Output is correct

Subtask #3
0 / 54.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1656 KB Output is correct
2 Correct 5 ms 1656 KB Output is correct
3 Correct 5 ms 1656 KB Output is correct
4 Correct 5 ms 1656 KB Output is correct
5 Correct 5 ms 1656 KB Output is correct
6 Correct 5 ms 1656 KB Output is correct
7 Correct 5 ms 1660 KB Output is correct
8 Correct 5 ms 1628 KB Output is correct
9 Correct 5 ms 1656 KB Output is correct
10 Correct 206 ms 20524 KB Output is correct
11 Correct 191 ms 20624 KB Output is correct
12 Correct 269 ms 26872 KB Output is correct
13 Correct 296 ms 18936 KB Output is correct
14 Correct 280 ms 19064 KB Output is correct
15 Correct 197 ms 20600 KB Output is correct
16 Correct 193 ms 20600 KB Output is correct
17 Correct 302 ms 18936 KB Output is correct
18 Correct 297 ms 19064 KB Output is correct
19 Correct 275 ms 19044 KB Output is correct
20 Correct 326 ms 26872 KB Output is correct
21 Correct 360 ms 26912 KB Output is correct
22 Incorrect 355 ms 26896 KB Output isn't correct
23 Halted 0 ms 0 KB -