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답안 #540198

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
540198 2022-03-19T15:57:03 Z browntoad Snake Escaping (JOI18_snake_escaping) C++14
100 / 100
 981 ms 55792 KB 
#include <bits/stdc++.h>
#pragma GCC optimize ("Ofast", "unroll-loops")
using namespace std;
#define ll long long
#define int ll
#define FOR(i,a,b) for (int i = (a); i<(b); i++)
#define REP(i,n) FOR(i,0,n)
#define REP1(i,n) FOR(i,1,n+1)
#define RREP(i,n) for (int i=(n)-1; i>=0; i--)
#define RREP1(i,n) for (int i=(n); i>=1; i--)
#define f first
#define s second
#define pb push_back
#define ALL(x) x.begin(),x.end()
#define SZ(x) (int)(x.size())
#define SQ(x) (x)*(x)
#define pii pair<int, int>
#define pdd pair<double ,double>
#define pcc pair<char, char> 
#define endl '\n'
//#define TOAD
#ifdef TOAD
#define bug(x) cerr<<__LINE__<<": "<<#x<<" is "<<x<<endl
#define IOS()
#else
#define bug(...)
#define IOS() ios::sync_with_stdio(0), cin.tie(0), cout.tie(0)
#endif
 
const ll inf = 1ll<<60;
const int iinf=2147483647;
const ll mod = 1e9+7;
const ll maxn=3005;
const double PI=acos(-1);
 
ll pw(ll x, ll p, ll m=mod){
    ll ret=1;
    while (p>0){
        if (p&1){
            ret*=x;
            ret%=m;
        }
        x*=x;
        x%=m;
        p>>=1;
    }
    return ret;
}
 
ll inv(ll a, ll m=mod){
    return pw(a,m-2);
}
 
//=======================================================================================
int n, res=0;
vector<int> a, b, c;
signed main (){
    IOS();
    int n,q; cin>>n>>q;
    int n2=(1<<n);
    vector<int> dp(1<<n), rdp(1<<n), val(1<<n);
    vector<bool> par(1<<n);
    REP(i,(1<<n)){
        par[i]=__builtin_popcount(i)%2;
    }
    string str; cin>>str;
    REP(i, (1<<n)){
        val[i]=str[i]-'0';
        dp[i]=val[i];
        rdp[i]=val[i];
    }
    REP(i, n){
        REP(j, (1<<n)){
            if (j&(1<<i)){
                dp[j]+=dp[j-(1<<i)];
            }
        }
    }
    REP(i, n){
        RREP(j, (1<<n)){
            if ((j&(1<<i))==0){
                rdp[j]+=rdp[j+(1<<i)];
            }
        }
    }
    REP(i, q){
        a.clear(); b.clear(); c.clear();
        res=0;
        string in; cin>>in;
        reverse(ALL(in));
        int ta=0, tb=0, tc=0;
        REP(j, SZ(in)){
            if (in[j]=='?') {
                a.pb(j);
                ta+=(1<<j);
            }
            else if (in[j]=='0') {
                b.pb(j);
                tb+=(1<<j);
            }
            else {
                c.pb(j);
                tc+=(1<<j);
            }
        }
        if (SZ(a)<=n/3){
            for (int j=ta; j>0; j=(j-1)&ta){
                res+=val[j+tc];
            }
            res+=val[tc];
            cout<<res<<endl;
        }
        else if (SZ(c)<=n/3){
            for (int j=tc; j>0; j=(j-1)&tc){
                res+=dp[j+ta]*(par[j+ta]*2-1);
            }
            res+=dp[ta]*(par[ta]*2-1);
            res=abs(res);
            cout<<res<<endl;
        }
        
        else {
            bug(rdp[2]);
            bug(rdp[6]);
            for (int j=tb; j>0; j=(j-1)&tb){
                res+=rdp[j+tc]*(par[j+tc]*2-1);
            }
            res+=rdp[tc]*(par[tc]*2-1);
            res=abs(res);
            cout<<res<<endl;
        }
    }
}

Compilation message

snake_escaping.cpp: In function 'int main()':
snake_escaping.cpp:60:9: warning: unused variable 'n2' [-Wunused-variable]
   60 |     int n2=(1<<n);
      |         ^~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 360 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 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 340 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 360 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 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 340 KB Output is correct
11 Correct 238 ms 15016 KB Output is correct
12 Correct 242 ms 14668 KB Output is correct
13 Correct 252 ms 13936 KB Output is correct
14 Correct 275 ms 14112 KB Output is correct
15 Correct 243 ms 14992 KB Output is correct
16 Correct 263 ms 14176 KB Output is correct
17 Correct 274 ms 14156 KB Output is correct
18 Correct 189 ms 16080 KB Output is correct
19 Correct 225 ms 13004 KB Output is correct
20 Correct 269 ms 14708 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 360 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 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 340 KB Output is correct
11 Correct 238 ms 15016 KB Output is correct
12 Correct 242 ms 14668 KB Output is correct
13 Correct 252 ms 13936 KB Output is correct
14 Correct 275 ms 14112 KB Output is correct
15 Correct 243 ms 14992 KB Output is correct
16 Correct 263 ms 14176 KB Output is correct
17 Correct 274 ms 14156 KB Output is correct
18 Correct 189 ms 16080 KB Output is correct
19 Correct 225 ms 13004 KB Output is correct
20 Correct 269 ms 14708 KB Output is correct
21 Correct 267 ms 18236 KB Output is correct
22 Correct 300 ms 18296 KB Output is correct
23 Correct 306 ms 17392 KB Output is correct
24 Correct 300 ms 17200 KB Output is correct
25 Correct 289 ms 19164 KB Output is correct
26 Correct 322 ms 17652 KB Output is correct
27 Correct 325 ms 17624 KB Output is correct
28 Correct 209 ms 20204 KB Output is correct
29 Correct 258 ms 16180 KB Output is correct
30 Correct 279 ms 18384 KB Output is correct
31 Correct 317 ms 18148 KB Output is correct
32 Correct 343 ms 18320 KB Output is correct
33 Correct 274 ms 17124 KB Output is correct
34 Correct 304 ms 17128 KB Output is correct
35 Correct 337 ms 17632 KB Output is correct
36 Correct 191 ms 16124 KB Output is correct
37 Correct 256 ms 18272 KB Output is correct
38 Correct 276 ms 16148 KB Output is correct
39 Correct 302 ms 17364 KB Output is correct
40 Correct 299 ms 17228 KB Output is correct

Subtask #4
53.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 360 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 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 340 KB Output is correct
11 Correct 82 ms 28672 KB Output is correct
12 Correct 77 ms 28504 KB Output is correct
13 Correct 86 ms 28508 KB Output is correct
14 Correct 95 ms 28396 KB Output is correct
15 Correct 78 ms 28528 KB Output is correct
16 Correct 101 ms 28500 KB Output is correct
17 Correct 98 ms 28500 KB Output is correct
18 Correct 68 ms 28596 KB Output is correct
19 Correct 74 ms 28488 KB Output is correct
20 Correct 90 ms 28528 KB Output is correct
21 Correct 94 ms 28532 KB Output is correct
22 Correct 103 ms 28404 KB Output is correct
23 Correct 86 ms 28496 KB Output is correct
24 Correct 91 ms 28520 KB Output is correct
25 Correct 98 ms 28516 KB Output is correct
26 Correct 69 ms 28452 KB Output is correct
27 Correct 77 ms 28524 KB Output is correct
28 Correct 96 ms 28520 KB Output is correct
29 Correct 82 ms 28496 KB Output is correct
30 Correct 93 ms 28532 KB Output is correct
31 Correct 75 ms 28412 KB Output is correct
32 Correct 111 ms 28492 KB Output is correct
33 Correct 102 ms 28508 KB Output is correct
34 Correct 73 ms 28508 KB Output is correct
35 Correct 86 ms 28524 KB Output is correct
36 Correct 87 ms 28532 KB Output is correct
37 Correct 92 ms 28516 KB Output is correct
38 Correct 93 ms 28508 KB Output is correct
39 Correct 89 ms 28484 KB Output is correct
40 Correct 88 ms 28524 KB Output is correct

Subtask #5
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 360 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 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 340 KB Output is correct
11 Correct 238 ms 15016 KB Output is correct
12 Correct 242 ms 14668 KB Output is correct
13 Correct 252 ms 13936 KB Output is correct
14 Correct 275 ms 14112 KB Output is correct
15 Correct 243 ms 14992 KB Output is correct
16 Correct 263 ms 14176 KB Output is correct
17 Correct 274 ms 14156 KB Output is correct
18 Correct 189 ms 16080 KB Output is correct
19 Correct 225 ms 13004 KB Output is correct
20 Correct 269 ms 14708 KB Output is correct
21 Correct 267 ms 18236 KB Output is correct
22 Correct 300 ms 18296 KB Output is correct
23 Correct 306 ms 17392 KB Output is correct
24 Correct 300 ms 17200 KB Output is correct
25 Correct 289 ms 19164 KB Output is correct
26 Correct 322 ms 17652 KB Output is correct
27 Correct 325 ms 17624 KB Output is correct
28 Correct 209 ms 20204 KB Output is correct
29 Correct 258 ms 16180 KB Output is correct
30 Correct 279 ms 18384 KB Output is correct
31 Correct 317 ms 18148 KB Output is correct
32 Correct 343 ms 18320 KB Output is correct
33 Correct 274 ms 17124 KB Output is correct
34 Correct 304 ms 17128 KB Output is correct
35 Correct 337 ms 17632 KB Output is correct
36 Correct 191 ms 16124 KB Output is correct
37 Correct 256 ms 18272 KB Output is correct
38 Correct 276 ms 16148 KB Output is correct
39 Correct 302 ms 17364 KB Output is correct
40 Correct 299 ms 17228 KB Output is correct
41 Correct 82 ms 28672 KB Output is correct
42 Correct 77 ms 28504 KB Output is correct
43 Correct 86 ms 28508 KB Output is correct
44 Correct 95 ms 28396 KB Output is correct
45 Correct 78 ms 28528 KB Output is correct
46 Correct 101 ms 28500 KB Output is correct
47 Correct 98 ms 28500 KB Output is correct
48 Correct 68 ms 28596 KB Output is correct
49 Correct 74 ms 28488 KB Output is correct
50 Correct 90 ms 28528 KB Output is correct
51 Correct 94 ms 28532 KB Output is correct
52 Correct 103 ms 28404 KB Output is correct
53 Correct 86 ms 28496 KB Output is correct
54 Correct 91 ms 28520 KB Output is correct
55 Correct 98 ms 28516 KB Output is correct
56 Correct 69 ms 28452 KB Output is correct
57 Correct 77 ms 28524 KB Output is correct
58 Correct 96 ms 28520 KB Output is correct
59 Correct 82 ms 28496 KB Output is correct
60 Correct 93 ms 28532 KB Output is correct
61 Correct 75 ms 28412 KB Output is correct
62 Correct 111 ms 28492 KB Output is correct
63 Correct 102 ms 28508 KB Output is correct
64 Correct 73 ms 28508 KB Output is correct
65 Correct 86 ms 28524 KB Output is correct
66 Correct 87 ms 28532 KB Output is correct
67 Correct 92 ms 28516 KB Output is correct
68 Correct 93 ms 28508 KB Output is correct
69 Correct 89 ms 28484 KB Output is correct
70 Correct 88 ms 28524 KB Output is correct
71 Correct 455 ms 52904 KB Output is correct
72 Correct 493 ms 52860 KB Output is correct
73 Correct 558 ms 51444 KB Output is correct
74 Correct 981 ms 51832 KB Output is correct
75 Correct 491 ms 53880 KB Output is correct
76 Correct 915 ms 52208 KB Output is correct
77 Correct 773 ms 52316 KB Output is correct
78 Correct 355 ms 55792 KB Output is correct
79 Correct 445 ms 49840 KB Output is correct
80 Correct 506 ms 52952 KB Output is correct
81 Correct 628 ms 52840 KB Output is correct
82 Correct 835 ms 51952 KB Output is correct
83 Correct 447 ms 50916 KB Output is correct
84 Correct 706 ms 52168 KB Output is correct
85 Correct 779 ms 52008 KB Output is correct
86 Correct 311 ms 49756 KB Output is correct
87 Correct 442 ms 52848 KB Output is correct
88 Correct 448 ms 49788 KB Output is correct
89 Correct 571 ms 51396 KB Output is correct
90 Correct 691 ms 51800 KB Output is correct
91 Correct 452 ms 51100 KB Output is correct
92 Correct 874 ms 52228 KB Output is correct
93 Correct 865 ms 52068 KB Output is correct
94 Correct 300 ms 49760 KB Output is correct
95 Correct 700 ms 51816 KB Output is correct
96 Correct 691 ms 51948 KB Output is correct
97 Correct 678 ms 51880 KB Output is correct
98 Correct 700 ms 51920 KB Output is correct
99 Correct 751 ms 51912 KB Output is correct
100 Correct 811 ms 51904 KB Output is correct