oj.uz

Submission #698925

# Submission time Handle Problem Language Result Execution time Memory
698925 2023-02-14T20:28:04 Z finn__ Snake Escaping (JOI18_snake_escaping) C++17
100 / 100
 758 ms 43212 KB 
#include <bits/stdc++.h>
using namespace std;

#define popcount(x) __builtin_popcount(x)

char snakes[1 << 20];
unsigned v[1 << 20], super[1 << 20], sub[1 << 20];

int main()
{
    size_t l, q;
    scanf("%zu %zu %s", &l, &q, snakes);

    for (unsigned i = 0; i < 1U << l; i++)
        super[i] = sub[i] = v[i] = snakes[i] - '0';

    for (unsigned i = 0; i < l; i++)
        for (unsigned j = 0; j < 1U << l; j++)
            if (j & (1 << i))
                sub[j] += sub[j ^ (1 << i)];
            else
                super[j] += super[j ^ (1 << i)];

    char s[20];
    while (q--)
    {
        scanf("%s", s);
        unsigned a = 0, b = 0, c = 0, ans = 0;
        for (unsigned i = 0; i < l; i++)
        {
            a <<= 1, b <<= 1, c <<= 1;
            a |= s[i] == '0', b |= s[i] == '1', c |= s[i] == '?';
        }

        if (popcount(a) <= popcount(b) && popcount(a) <= popcount(c))
        {
            ans = super[b];
            for (unsigned i = a; i; i = (i - 1) & a)
                ans += super[b | i] * ((popcount(i) & 1) ? -1 : 1);
        }
        else if (popcount(b) <= popcount(a) && popcount(b) <= popcount(c))
        {
            ans = sub[c | b];
            for (unsigned i = b; i; i = (i - 1) & b)
                ans += sub[c | (b ^ i)] * ((popcount(i) & 1) ? -1 : 1);
        }
        else
        {
            ans = v[b];
            for (unsigned i = c; i; i = (i - 1) & c)
                ans += v[b | i];
        }

        printf("%u\n", ans);
    }
}

Compilation message

snake_escaping.cpp: In function 'int main()':
snake_escaping.cpp:12:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |     scanf("%zu %zu %s", &l, &q, snakes);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
snake_escaping.cpp:27:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |         scanf("%s", s);
      |         ~~~~~^~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 312 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 312 KB Output is correct
11 Correct 204 ms 15088 KB Output is correct
12 Correct 203 ms 14748 KB Output is correct
13 Correct 205 ms 13920 KB Output is correct
14 Correct 218 ms 13956 KB Output is correct
15 Correct 209 ms 15044 KB Output is correct
16 Correct 219 ms 14224 KB Output is correct
17 Correct 214 ms 14208 KB Output is correct
18 Correct 195 ms 16076 KB Output is correct
19 Correct 191 ms 13024 KB Output is correct
20 Correct 197 ms 14656 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 312 KB Output is correct
11 Correct 204 ms 15088 KB Output is correct
12 Correct 203 ms 14748 KB Output is correct
13 Correct 205 ms 13920 KB Output is correct
14 Correct 218 ms 13956 KB Output is correct
15 Correct 209 ms 15044 KB Output is correct
16 Correct 219 ms 14224 KB Output is correct
17 Correct 214 ms 14208 KB Output is correct
18 Correct 195 ms 16076 KB Output is correct
19 Correct 191 ms 13024 KB Output is correct
20 Correct 197 ms 14656 KB Output is correct
21 Correct 220 ms 18072 KB Output is correct
22 Correct 215 ms 18272 KB Output is correct
23 Correct 230 ms 17360 KB Output is correct
24 Correct 273 ms 17088 KB Output is correct
25 Correct 231 ms 19096 KB Output is correct
26 Correct 268 ms 17512 KB Output is correct
27 Correct 248 ms 17512 KB Output is correct
28 Correct 217 ms 20032 KB Output is correct
29 Correct 206 ms 16056 KB Output is correct
30 Correct 217 ms 18212 KB Output is correct
31 Correct 238 ms 18108 KB Output is correct
32 Correct 286 ms 18248 KB Output is correct
33 Correct 231 ms 16932 KB Output is correct
34 Correct 260 ms 17208 KB Output is correct
35 Correct 250 ms 17484 KB Output is correct
36 Correct 203 ms 16072 KB Output is correct
37 Correct 207 ms 18120 KB Output is correct
38 Correct 207 ms 15984 KB Output is correct
39 Correct 228 ms 17224 KB Output is correct
40 Correct 270 ms 17052 KB Output is correct

Subtask #4
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 312 KB Output is correct
11 Correct 41 ms 15820 KB Output is correct
12 Correct 43 ms 15892 KB Output is correct
13 Correct 47 ms 15792 KB Output is correct
14 Correct 58 ms 15864 KB Output is correct
15 Correct 44 ms 15876 KB Output is correct
16 Correct 66 ms 15852 KB Output is correct
17 Correct 60 ms 15880 KB Output is correct
18 Correct 40 ms 15976 KB Output is correct
19 Correct 41 ms 15768 KB Output is correct
20 Correct 45 ms 15848 KB Output is correct
21 Correct 48 ms 15908 KB Output is correct
22 Correct 58 ms 15856 KB Output is correct
23 Correct 55 ms 15776 KB Output is correct
24 Correct 63 ms 15796 KB Output is correct
25 Correct 62 ms 15792 KB Output is correct
26 Correct 40 ms 15812 KB Output is correct
27 Correct 40 ms 15804 KB Output is correct
28 Correct 41 ms 15716 KB Output is correct
29 Correct 51 ms 15840 KB Output is correct
30 Correct 47 ms 15780 KB Output is correct
31 Correct 44 ms 15816 KB Output is correct
32 Correct 72 ms 15800 KB Output is correct
33 Correct 59 ms 15840 KB Output is correct
34 Correct 45 ms 15748 KB Output is correct
35 Correct 60 ms 15824 KB Output is correct
36 Correct 55 ms 15888 KB Output is correct
37 Correct 55 ms 15776 KB Output is correct
38 Correct 53 ms 15820 KB Output is correct
39 Correct 52 ms 15780 KB Output is correct
40 Correct 54 ms 15780 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 312 KB Output is correct
11 Correct 204 ms 15088 KB Output is correct
12 Correct 203 ms 14748 KB Output is correct
13 Correct 205 ms 13920 KB Output is correct
14 Correct 218 ms 13956 KB Output is correct
15 Correct 209 ms 15044 KB Output is correct
16 Correct 219 ms 14224 KB Output is correct
17 Correct 214 ms 14208 KB Output is correct
18 Correct 195 ms 16076 KB Output is correct
19 Correct 191 ms 13024 KB Output is correct
20 Correct 197 ms 14656 KB Output is correct
21 Correct 220 ms 18072 KB Output is correct
22 Correct 215 ms 18272 KB Output is correct
23 Correct 230 ms 17360 KB Output is correct
24 Correct 273 ms 17088 KB Output is correct
25 Correct 231 ms 19096 KB Output is correct
26 Correct 268 ms 17512 KB Output is correct
27 Correct 248 ms 17512 KB Output is correct
28 Correct 217 ms 20032 KB Output is correct
29 Correct 206 ms 16056 KB Output is correct
30 Correct 217 ms 18212 KB Output is correct
31 Correct 238 ms 18108 KB Output is correct
32 Correct 286 ms 18248 KB Output is correct
33 Correct 231 ms 16932 KB Output is correct
34 Correct 260 ms 17208 KB Output is correct
35 Correct 250 ms 17484 KB Output is correct
36 Correct 203 ms 16072 KB Output is correct
37 Correct 207 ms 18120 KB Output is correct
38 Correct 207 ms 15984 KB Output is correct
39 Correct 228 ms 17224 KB Output is correct
40 Correct 270 ms 17052 KB Output is correct
41 Correct 41 ms 15820 KB Output is correct
42 Correct 43 ms 15892 KB Output is correct
43 Correct 47 ms 15792 KB Output is correct
44 Correct 58 ms 15864 KB Output is correct
45 Correct 44 ms 15876 KB Output is correct
46 Correct 66 ms 15852 KB Output is correct
47 Correct 60 ms 15880 KB Output is correct
48 Correct 40 ms 15976 KB Output is correct
49 Correct 41 ms 15768 KB Output is correct
50 Correct 45 ms 15848 KB Output is correct
51 Correct 48 ms 15908 KB Output is correct
52 Correct 58 ms 15856 KB Output is correct
53 Correct 55 ms 15776 KB Output is correct
54 Correct 63 ms 15796 KB Output is correct
55 Correct 62 ms 15792 KB Output is correct
56 Correct 40 ms 15812 KB Output is correct
57 Correct 40 ms 15804 KB Output is correct
58 Correct 41 ms 15716 KB Output is correct
59 Correct 51 ms 15840 KB Output is correct
60 Correct 47 ms 15780 KB Output is correct
61 Correct 44 ms 15816 KB Output is correct
62 Correct 72 ms 15800 KB Output is correct
63 Correct 59 ms 15840 KB Output is correct
64 Correct 45 ms 15748 KB Output is correct
65 Correct 60 ms 15824 KB Output is correct
66 Correct 55 ms 15888 KB Output is correct
67 Correct 55 ms 15776 KB Output is correct
68 Correct 53 ms 15820 KB Output is correct
69 Correct 52 ms 15780 KB Output is correct
70 Correct 54 ms 15780 KB Output is correct
71 Correct 315 ms 40216 KB Output is correct
72 Correct 326 ms 40360 KB Output is correct
73 Correct 428 ms 38912 KB Output is correct
74 Correct 631 ms 39120 KB Output is correct
75 Correct 342 ms 41268 KB Output is correct
76 Correct 641 ms 39496 KB Output is correct
77 Correct 642 ms 39296 KB Output is correct
78 Correct 301 ms 43212 KB Output is correct
79 Correct 319 ms 37144 KB Output is correct
80 Correct 323 ms 40336 KB Output is correct
81 Correct 441 ms 40212 KB Output is correct
82 Correct 566 ms 39200 KB Output is correct
83 Correct 339 ms 38436 KB Output is correct
84 Correct 744 ms 39332 KB Output is correct
85 Correct 650 ms 39528 KB Output is correct
86 Correct 288 ms 37088 KB Output is correct
87 Correct 310 ms 40168 KB Output is correct
88 Correct 325 ms 37152 KB Output is correct
89 Correct 432 ms 38932 KB Output is correct
90 Correct 387 ms 39104 KB Output is correct
91 Correct 337 ms 38380 KB Output is correct
92 Correct 758 ms 39516 KB Output is correct
93 Correct 641 ms 39356 KB Output is correct
94 Correct 293 ms 37220 KB Output is correct
95 Correct 552 ms 39240 KB Output is correct
96 Correct 549 ms 39192 KB Output is correct
97 Correct 563 ms 39240 KB Output is correct
98 Correct 562 ms 39184 KB Output is correct
99 Correct 557 ms 39200 KB Output is correct
100 Correct 576 ms 39220 KB Output is correct