oj.uz

Submission #1039691

# Submission time Handle Problem Language Result Execution time Memory
1039691 2024-07-31T07:41:07 Z 중국공산당(#11033) Toy (CEOI24_toy) C++17
0 / 100
 5 ms 8540 KB 
#include <cstdio>
#include <random>
#include <cstdlib>
using namespace std;

const int dt[4][2] = { 1, 0, -1, 0, 0, 1, 0, -1 };

int w, h, k, l;
int x, y, gx, gy;
char a[1506][1506];
long long sum[1506][1506], b[1506][1506];

mt19937 gen(1104);
uniform_int_distribution<int> uid(0, 60);

void f(int y, int x) {
    long long o = sum[y][x];
    sum[y][x] = 0;
    if (y == gy && x == gx) puts("YES"), exit(0);
    for (int t = 0; t < 4; t++) {
        int ny = y + dt[t][1], nx = x + dt[t][0];
        if (ny < 0 || ny >= h || nx < 0 || nx >= w) continue;
        if (!(sum[ny][nx] & o)) continue;
        f(ny, nx);
    }
}

int main() {
    scanf("%d%d%d%d", &w, &h, &k, &l);
    scanf("%*d%d%d%*d", &y, &x);
    for (int i = 0; i < h; i++) scanf("%s", a[i]);
    for (int i = 0; i < h; i++) for (int j = 0; j < w; j++) if (a[i][j] == '*') gy = i, gx = j;
    for (int i = 0; i < h; i++) for (int j = 0; j < w; j++) sum[i][j] = (a[i][j] == 'X') + (i ? sum[i - 1][j] : 0) + (j ? sum[i][j - 1] : 0) - (i && j ? sum[i - 1][j - 1] : 0);
    for (int i = 0; i < h - l + 1; i++) for (int j = 0; j < w - k + 1; j++) {
        int curr = sum[i + l - 1][j + k - 1] - (i ? sum[i - 1][j + k - 1] : 0) - (j ? sum[i + l - 1][j - 1] : 0) + (i && j ? sum[i - 1][j - 1] : 0);
        if (!curr) {
            long long c = 1LL << uid(gen);
            b[i][j] += c, b[i + l][j] -= c, b[i][j + k] -= c, b[i + l][j + k] += c;
        }
    }
    for (int i = 0; i < h; i++) for (int j = 0; j < w; j++) sum[i][j] = b[i][j] + (i ? sum[i - 1][j] : 0) + (j ? sum[i][j - 1] : 0) - (i && j ? sum[i - 1][j - 1] : 0);
    f(y, x);
    puts("NO");
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:29:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |     scanf("%d%d%d%d", &w, &h, &k, &l);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:30:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |     scanf("%*d%d%d%*d", &y, &x);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~
Main.cpp:31:38: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |     for (int i = 0; i < h; i++) scanf("%s", a[i]);
      |                                 ~~~~~^~~~~~~~~~~~

Subtask #0
0.0 / 0.0

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

Subtask #1
0.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 860 KB Output is correct
5 Correct 0 ms 600 KB Output is correct
6 Incorrect 0 ms 604 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #2
0.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 860 KB Output is correct
5 Correct 0 ms 600 KB Output is correct
6 Incorrect 0 ms 604 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #3
0.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 860 KB Output is correct
4 Correct 4 ms 5188 KB Output is correct
5 Correct 5 ms 8540 KB Output is correct
6 Correct 1 ms 3420 KB Output is correct
7 Correct 4 ms 5980 KB Output is correct
8 Incorrect 3 ms 6236 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #4
0.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 860 KB Output is correct
5 Correct 0 ms 600 KB Output is correct
6 Incorrect 0 ms 604 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #5
0.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 860 KB Output is correct
5 Correct 0 ms 600 KB Output is correct
6 Incorrect 0 ms 604 KB Output isn't correct
7 Halted 0 ms 0 KB -