oj.uz

Submission #920237

# Submission time Handle Problem Language Result Execution time Memory
920237 2024-02-02T10:18:29 Z Unforgettablepl Snake Escaping (JOI18_snake_escaping) C++17
100 / 100
 1859 ms 54412 KB 
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#include <bits/stdc++.h>
using namespace std;

#define int long long

int DP1[1048576];
int DP2[1048576];
int arr[1048576];
int idx[6];

inline int preprocess(const string &s,char c){
    int ans = 0;
    int cnt = 0;
    for(int bit=0;bit<s.size();bit++){
        if(s[bit]==c){
            idx[cnt++]=bit;
        } else if(s[bit]=='?'){
            if(c=='1')ans|=(1<<bit);
        } else {
            if(s[bit]=='1')ans|=(1<<bit);
        }
    }
    return ans;
}

inline int applymask(int qu,int mask,int cnt){
    for(int bit=0;bit<cnt;bit++){
        if(mask&(1<<bit))qu|=(1<<idx[bit]);
    }
    return qu;
}

int32_t main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int l,q;
    cin >> l >> q;
    for(int mask=0;mask<(1<<l);mask++){
        char a;cin>>a;a-='0';
        DP1[mask]=DP2[mask]=arr[mask]=a;
    }
    for(int bit=0;bit<20;bit++){
        for(int mask=0;mask<(1<<20);mask++){
            if(mask&(1<<bit)){
                DP2[mask^(1<<bit)]+=DP2[mask];
            } else {
                DP1[mask|(1<<bit)]+=DP1[mask];
            }
        }
    }
    for(int i=1;i<=q;i++){
        string s;cin>>s;
        reverse(s.begin(),s.end());
        int c1=0,c0=0,cq=0;
        for(char&j:s) {
            if(j=='1')c1++;
            else if(j=='0')c0++;
            else if(j=='?')cq++;
        }
        if(cq<=6){
            int qu = preprocess(s,'?');
            int ans = 0;
            for(int mask=0;mask<(1<<cq);mask++){
                ans+=arr[applymask(qu,mask,cq)];
            }
            cout<<ans<<'\n';
            continue;
        }
        if(c1<=6){
            int qu = preprocess(s,'1');
            int ans = 0;
            for(int mask=0;mask<(1<<c1);mask++){
                if(__builtin_parity(mask)==(c1&1)){
                    ans+=DP1[applymask(qu,mask,c1)];
                } else {
                    ans-=DP1[applymask(qu,mask,c1)];
                }
            }
            cout<<ans<<'\n';
            continue;
        }
        if(c0<=6){
            int qu = preprocess(s,'0');
            int ans = 0;
            for(int mask=0;mask<(1<<c0);mask++){
                if(__builtin_parity(mask)){
                    ans-=DP2[applymask(qu,mask,c0)];
                } else {
                    ans+=DP2[applymask(qu,mask,c0)];
                }
            }
            cout<<ans<<'\n';
            continue;
        }
    }
}

Compilation message

snake_escaping.cpp: In function 'long long int preprocess(const string&, char)':
snake_escaping.cpp:16:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |     for(int bit=0;bit<s.size();bit++){
      |                   ~~~^~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 18520 KB Output is correct
2 Correct 29 ms 18520 KB Output is correct
3 Correct 33 ms 18520 KB Output is correct
4 Correct 29 ms 18520 KB Output is correct
5 Correct 35 ms 18524 KB Output is correct
6 Correct 33 ms 18520 KB Output is correct
7 Correct 29 ms 18520 KB Output is correct
8 Correct 33 ms 18520 KB Output is correct
9 Correct 29 ms 18608 KB Output is correct
10 Correct 33 ms 18768 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 18520 KB Output is correct
2 Correct 29 ms 18520 KB Output is correct
3 Correct 33 ms 18520 KB Output is correct
4 Correct 29 ms 18520 KB Output is correct
5 Correct 35 ms 18524 KB Output is correct
6 Correct 33 ms 18520 KB Output is correct
7 Correct 29 ms 18520 KB Output is correct
8 Correct 33 ms 18520 KB Output is correct
9 Correct 29 ms 18608 KB Output is correct
10 Correct 33 ms 18768 KB Output is correct
11 Correct 437 ms 33576 KB Output is correct
12 Correct 460 ms 33104 KB Output is correct
13 Correct 347 ms 32448 KB Output is correct
14 Correct 343 ms 32612 KB Output is correct
15 Correct 788 ms 33368 KB Output is correct
16 Correct 430 ms 32500 KB Output is correct
17 Correct 428 ms 32752 KB Output is correct
18 Correct 223 ms 34384 KB Output is correct
19 Correct 242 ms 31356 KB Output is correct
20 Correct 494 ms 33348 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 18520 KB Output is correct
2 Correct 29 ms 18520 KB Output is correct
3 Correct 33 ms 18520 KB Output is correct
4 Correct 29 ms 18520 KB Output is correct
5 Correct 35 ms 18524 KB Output is correct
6 Correct 33 ms 18520 KB Output is correct
7 Correct 29 ms 18520 KB Output is correct
8 Correct 33 ms 18520 KB Output is correct
9 Correct 29 ms 18608 KB Output is correct
10 Correct 33 ms 18768 KB Output is correct
11 Correct 437 ms 33576 KB Output is correct
12 Correct 460 ms 33104 KB Output is correct
13 Correct 347 ms 32448 KB Output is correct
14 Correct 343 ms 32612 KB Output is correct
15 Correct 788 ms 33368 KB Output is correct
16 Correct 430 ms 32500 KB Output is correct
17 Correct 428 ms 32752 KB Output is correct
18 Correct 223 ms 34384 KB Output is correct
19 Correct 242 ms 31356 KB Output is correct
20 Correct 494 ms 33348 KB Output is correct
21 Correct 917 ms 36348 KB Output is correct
22 Correct 488 ms 36528 KB Output is correct
23 Correct 462 ms 35596 KB Output is correct
24 Correct 440 ms 35420 KB Output is correct
25 Correct 389 ms 37712 KB Output is correct
26 Correct 555 ms 35920 KB Output is correct
27 Correct 543 ms 36336 KB Output is correct
28 Correct 243 ms 38480 KB Output is correct
29 Correct 301 ms 34384 KB Output is correct
30 Correct 681 ms 36504 KB Output is correct
31 Correct 863 ms 36604 KB Output is correct
32 Correct 560 ms 36688 KB Output is correct
33 Correct 371 ms 35408 KB Output is correct
34 Correct 450 ms 35740 KB Output is correct
35 Correct 544 ms 35920 KB Output is correct
36 Correct 227 ms 34384 KB Output is correct
37 Correct 805 ms 36460 KB Output is correct
38 Correct 325 ms 34384 KB Output is correct
39 Correct 470 ms 35476 KB Output is correct
40 Correct 463 ms 35408 KB Output is correct

Subtask #4
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 18520 KB Output is correct
2 Correct 29 ms 18520 KB Output is correct
3 Correct 33 ms 18520 KB Output is correct
4 Correct 29 ms 18520 KB Output is correct
5 Correct 35 ms 18524 KB Output is correct
6 Correct 33 ms 18520 KB Output is correct
7 Correct 29 ms 18520 KB Output is correct
8 Correct 33 ms 18520 KB Output is correct
9 Correct 29 ms 18608 KB Output is correct
10 Correct 33 ms 18768 KB Output is correct
11 Correct 56 ms 27344 KB Output is correct
12 Correct 57 ms 27220 KB Output is correct
13 Correct 72 ms 27220 KB Output is correct
14 Correct 87 ms 27216 KB Output is correct
15 Correct 63 ms 27220 KB Output is correct
16 Correct 138 ms 27460 KB Output is correct
17 Correct 114 ms 27088 KB Output is correct
18 Correct 50 ms 27472 KB Output is correct
19 Correct 61 ms 27216 KB Output is correct
20 Correct 61 ms 27280 KB Output is correct
21 Correct 74 ms 27216 KB Output is correct
22 Correct 91 ms 27220 KB Output is correct
23 Correct 61 ms 27220 KB Output is correct
24 Correct 88 ms 27100 KB Output is correct
25 Correct 114 ms 27200 KB Output is correct
26 Correct 51 ms 27088 KB Output is correct
27 Correct 65 ms 27216 KB Output is correct
28 Correct 58 ms 27092 KB Output is correct
29 Correct 71 ms 27216 KB Output is correct
30 Correct 100 ms 27472 KB Output is correct
31 Correct 60 ms 27216 KB Output is correct
32 Correct 107 ms 27216 KB Output is correct
33 Correct 107 ms 27216 KB Output is correct
34 Correct 49 ms 27216 KB Output is correct
35 Correct 85 ms 27092 KB Output is correct
36 Correct 96 ms 27216 KB Output is correct
37 Correct 92 ms 27100 KB Output is correct
38 Correct 91 ms 27248 KB Output is correct
39 Correct 89 ms 27096 KB Output is correct
40 Correct 88 ms 27216 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 18520 KB Output is correct
2 Correct 29 ms 18520 KB Output is correct
3 Correct 33 ms 18520 KB Output is correct
4 Correct 29 ms 18520 KB Output is correct
5 Correct 35 ms 18524 KB Output is correct
6 Correct 33 ms 18520 KB Output is correct
7 Correct 29 ms 18520 KB Output is correct
8 Correct 33 ms 18520 KB Output is correct
9 Correct 29 ms 18608 KB Output is correct
10 Correct 33 ms 18768 KB Output is correct
11 Correct 437 ms 33576 KB Output is correct
12 Correct 460 ms 33104 KB Output is correct
13 Correct 347 ms 32448 KB Output is correct
14 Correct 343 ms 32612 KB Output is correct
15 Correct 788 ms 33368 KB Output is correct
16 Correct 430 ms 32500 KB Output is correct
17 Correct 428 ms 32752 KB Output is correct
18 Correct 223 ms 34384 KB Output is correct
19 Correct 242 ms 31356 KB Output is correct
20 Correct 494 ms 33348 KB Output is correct
21 Correct 917 ms 36348 KB Output is correct
22 Correct 488 ms 36528 KB Output is correct
23 Correct 462 ms 35596 KB Output is correct
24 Correct 440 ms 35420 KB Output is correct
25 Correct 389 ms 37712 KB Output is correct
26 Correct 555 ms 35920 KB Output is correct
27 Correct 543 ms 36336 KB Output is correct
28 Correct 243 ms 38480 KB Output is correct
29 Correct 301 ms 34384 KB Output is correct
30 Correct 681 ms 36504 KB Output is correct
31 Correct 863 ms 36604 KB Output is correct
32 Correct 560 ms 36688 KB Output is correct
33 Correct 371 ms 35408 KB Output is correct
34 Correct 450 ms 35740 KB Output is correct
35 Correct 544 ms 35920 KB Output is correct
36 Correct 227 ms 34384 KB Output is correct
37 Correct 805 ms 36460 KB Output is correct
38 Correct 325 ms 34384 KB Output is correct
39 Correct 470 ms 35476 KB Output is correct
40 Correct 463 ms 35408 KB Output is correct
41 Correct 56 ms 27344 KB Output is correct
42 Correct 57 ms 27220 KB Output is correct
43 Correct 72 ms 27220 KB Output is correct
44 Correct 87 ms 27216 KB Output is correct
45 Correct 63 ms 27220 KB Output is correct
46 Correct 138 ms 27460 KB Output is correct
47 Correct 114 ms 27088 KB Output is correct
48 Correct 50 ms 27472 KB Output is correct
49 Correct 61 ms 27216 KB Output is correct
50 Correct 61 ms 27280 KB Output is correct
51 Correct 74 ms 27216 KB Output is correct
52 Correct 91 ms 27220 KB Output is correct
53 Correct 61 ms 27220 KB Output is correct
54 Correct 88 ms 27100 KB Output is correct
55 Correct 114 ms 27200 KB Output is correct
56 Correct 51 ms 27088 KB Output is correct
57 Correct 65 ms 27216 KB Output is correct
58 Correct 58 ms 27092 KB Output is correct
59 Correct 71 ms 27216 KB Output is correct
60 Correct 100 ms 27472 KB Output is correct
61 Correct 60 ms 27216 KB Output is correct
62 Correct 107 ms 27216 KB Output is correct
63 Correct 107 ms 27216 KB Output is correct
64 Correct 49 ms 27216 KB Output is correct
65 Correct 85 ms 27092 KB Output is correct
66 Correct 96 ms 27216 KB Output is correct
67 Correct 92 ms 27100 KB Output is correct
68 Correct 91 ms 27248 KB Output is correct
69 Correct 89 ms 27096 KB Output is correct
70 Correct 88 ms 27216 KB Output is correct
71 Correct 410 ms 51536 KB Output is correct
72 Correct 489 ms 51644 KB Output is correct
73 Correct 686 ms 50124 KB Output is correct
74 Correct 1069 ms 50596 KB Output is correct
75 Correct 544 ms 52496 KB Output is correct
76 Correct 1859 ms 50768 KB Output is correct
77 Correct 1510 ms 51136 KB Output is correct
78 Correct 325 ms 54412 KB Output is correct
79 Correct 394 ms 48464 KB Output is correct
80 Correct 554 ms 51752 KB Output is correct
81 Correct 722 ms 51796 KB Output is correct
82 Correct 1046 ms 50588 KB Output is correct
83 Correct 510 ms 49676 KB Output is correct
84 Correct 1025 ms 50512 KB Output is correct
85 Correct 1521 ms 50908 KB Output is correct
86 Correct 305 ms 48464 KB Output is correct
87 Correct 427 ms 51536 KB Output is correct
88 Correct 451 ms 48704 KB Output is correct
89 Correct 685 ms 50136 KB Output is correct
90 Correct 992 ms 50596 KB Output is correct
91 Correct 507 ms 49744 KB Output is correct
92 Correct 1282 ms 50992 KB Output is correct
93 Correct 1524 ms 50796 KB Output is correct
94 Correct 289 ms 48464 KB Output is correct
95 Correct 1158 ms 50932 KB Output is correct
96 Correct 1218 ms 50728 KB Output is correct
97 Correct 1201 ms 50864 KB Output is correct
98 Correct 1186 ms 50836 KB Output is correct
99 Correct 1221 ms 50516 KB Output is correct
100 Correct 1229 ms 50616 KB Output is correct