oj.uz

Submission #53844

# Submission time Handle Problem Language Result Execution time Memory
53844 2018-07-01T09:29:45 Z ainta Sandwich (JOI16_sandwich) C++17
35 / 100
 8000 ms 45656 KB 
#include<cstdio>
#include<algorithm>
#include<vector>
#include<bitset>
using namespace std;
int Q[3<<17], Deg[3<<17], Res[3<<17], ord[3<<17], cnt,vis[3<<17];
char p[1<<9][1<<9];
vector<int>E[3<<17], F[3<<17];
int n, m;
int Num(int x, int y, int ck) {
	if (x<1 || x>n || y<1 || y>m)return 0;
	int cc = 0;
	if (p[x][y] == 'N') {
		if (ck == 0 || ck == 3)cc = 1;
		else cc = 2;
	}
	else {
		if (ck == 0 || ck == 2)cc = 1;
		else cc = 2;
	}
	return ((x - 1)*m + (y - 1)) * 2 + cc;
}
void Add_Edge(int a, int b) {
	if (!a || !b)return;
	E[a].push_back(b);
	Deg[a]++;
	F[b].push_back(a);
}
int main() {
	int i, j;
	//freopen("input.txt", "r", stdin);
	scanf("%d%d", &n, &m);
	for (i = 1; i <= n; i++) {
		scanf("%s", p[i] + 1);
	}
	for (i = 1; i <= n; i++) {
		for (j = 1; j <= m; j++) {
			Add_Edge(Num(i, j, 0), Num(i - 1, j, 0));
			Add_Edge(Num(i, j, 1), Num(i + 1, j, 1));
			Add_Edge(Num(i, j, 2), Num(i, j - 1, 2));
			Add_Edge(Num(i, j, 3), Num(i, j + 1, 3));
		}
	}
	int head = 0, tail = 0;
	for (i = 1; i <= n*m * 2; i++) {
		if (!Deg[i])Q[++tail] = i;
	}
	while (head < tail) {
		int x = Q[++head];
		for (auto &t : F[x]) {
			Deg[t]--;
			if (!Deg[t])Q[++tail] = t;
		}
	}
	for (i = 1; i <= tail; i++)ord[++cnt] = Q[i];
	int cur = 0;
	for (i = 1; i <= n; i++) {
		cur++;
		for (j = 1; j <= m; j++) {
			int bs = Num(i,j,3);
			int head = 0, tail = 0;
			if (vis[bs] != cur && !Deg[bs]) {
				vis[bs] = cur, Res[bs] += m-j+1;
				Q[++tail] = bs;
			}
			while (head < tail) {
				int x = Q[++head];
				for (auto &t : F[x]) {
					if (vis[t] != cur && !Deg[t]) {
						vis[t] = cur, Res[t]  += m-j+1;
						Q[++tail] = t;
					}
				}
			}
		}
		cur++;
		for (j = m; j >= 1; j--) {
			int bs = Num(i, j, 2);
			int head = 0, tail = 0;
			if (vis[bs] != cur && !Deg[bs]) {
				vis[bs] = cur, Res[bs] += j;
				Q[++tail] = bs;
			}
			while (head < tail) {
				int x = Q[++head];
				for (auto &t : F[x]) {
					if (vis[t] != cur && !Deg[t]) {
						vis[t] = cur, Res[t] += j;
						Q[++tail] = t;
					}
				}
			}
		}
	}
	for (i = 1; i <= n; i++) {
		for (j = 1; j <= m; j++) {
			int bs = ((i - 1)*m + j - 1) * 2, res = 1e9;
			if (!Deg[bs + 1])res = min(res, Res[bs + 1]);
			if (!Deg[bs + 2])res = min(res, Res[bs + 2]);
			if (res > 8e8)res = -1;
			else res *= 2;
			printf("%d ", res);
		}
		printf("\n");
	}
}

Compilation message

sandwich.cpp: In function 'int main()':
sandwich.cpp:32:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~
sandwich.cpp:34:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s", p[i] + 1);
   ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 18808 KB Output is correct
2 Correct 19 ms 18968 KB Output is correct
3 Correct 17 ms 19172 KB Output is correct
4 Correct 17 ms 19172 KB Output is correct
5 Correct 18 ms 19172 KB Output is correct
6 Correct 23 ms 19352 KB Output is correct
7 Correct 23 ms 19512 KB Output is correct
8 Correct 26 ms 19572 KB Output is correct
9 Correct 20 ms 19572 KB Output is correct
10 Correct 26 ms 19604 KB Output is correct
11 Correct 32 ms 19604 KB Output is correct
12 Correct 22 ms 19604 KB Output is correct
13 Correct 28 ms 19604 KB Output is correct
14 Correct 27 ms 19604 KB Output is correct
15 Correct 24 ms 19620 KB Output is correct
16 Correct 23 ms 19628 KB Output is correct
17 Correct 24 ms 19628 KB Output is correct
18 Correct 23 ms 19628 KB Output is correct
19 Correct 27 ms 19644 KB Output is correct
20 Correct 21 ms 19644 KB Output is correct
21 Correct 22 ms 19644 KB Output is correct
22 Correct 20 ms 19644 KB Output is correct
23 Correct 20 ms 19644 KB Output is correct
24 Correct 27 ms 19644 KB Output is correct
25 Correct 29 ms 19644 KB Output is correct
26 Correct 25 ms 19644 KB Output is correct
27 Correct 24 ms 19644 KB Output is correct
28 Correct 30 ms 19644 KB Output is correct

Subtask #2
0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 18808 KB Output is correct
2 Correct 19 ms 18968 KB Output is correct
3 Correct 17 ms 19172 KB Output is correct
4 Correct 17 ms 19172 KB Output is correct
5 Correct 18 ms 19172 KB Output is correct
6 Correct 23 ms 19352 KB Output is correct
7 Correct 23 ms 19512 KB Output is correct
8 Correct 26 ms 19572 KB Output is correct
9 Correct 20 ms 19572 KB Output is correct
10 Correct 26 ms 19604 KB Output is correct
11 Correct 32 ms 19604 KB Output is correct
12 Correct 22 ms 19604 KB Output is correct
13 Correct 28 ms 19604 KB Output is correct
14 Correct 27 ms 19604 KB Output is correct
15 Correct 24 ms 19620 KB Output is correct
16 Correct 23 ms 19628 KB Output is correct
17 Correct 24 ms 19628 KB Output is correct
18 Correct 23 ms 19628 KB Output is correct
19 Correct 27 ms 19644 KB Output is correct
20 Correct 21 ms 19644 KB Output is correct
21 Correct 22 ms 19644 KB Output is correct
22 Correct 20 ms 19644 KB Output is correct
23 Correct 20 ms 19644 KB Output is correct
24 Correct 27 ms 19644 KB Output is correct
25 Correct 29 ms 19644 KB Output is correct
26 Correct 25 ms 19644 KB Output is correct
27 Correct 24 ms 19644 KB Output is correct
28 Correct 30 ms 19644 KB Output is correct
29 Correct 16 ms 19644 KB Output is correct
30 Correct 22 ms 19644 KB Output is correct
31 Correct 175 ms 41220 KB Output is correct
32 Correct 174 ms 41220 KB Output is correct
33 Correct 48 ms 41220 KB Output is correct
34 Execution timed out 8084 ms 45656 KB Time limit exceeded
35 Halted 0 ms 0 KB -