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답안 #378774

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
378774 2021-03-17T04:05:04 Z balbit Lamps (JOI19_lamps) C++14
10 / 100
 82 ms 26272 KB 
#include <bits/stdc++.h>
#undef BALBIT
using namespace std;
#define ll long long
#define y1 zck_is_king
#define pii pair<int, int>
#define ull unsigned ll
#define f first
#define s second
#define ALL(x) x.begin(),x.end()
#define SZ(x) (int)x.size()
#define SQ(x) (x)*(x)
#define MN(a,b) a = min(a,(__typeof__(a))(b))
#define MX(a,b) a = max(a,(__typeof__(a))(b))
#define pb push_back
#define REP(i,n) for (int i = 0; i<n; ++i)
#define RREP(i,n) for (int i = n-1; i>=0; --i)
#define REP1(i,n) for (int i = 1; i<=n; ++i)
#define SORT_UNIQUE(c) (sort(c.begin(),c.end()), c.resize(distance(c.begin(),unique(c.begin(),c.end()))))
#ifdef BALBIT
#define IOS()
#define bug(...) fprintf(stderr,"#%d (%s) = ",__LINE__,#__VA_ARGS__),_do(__VA_ARGS__);
template<typename T> void _do(T &&x){cerr<<x<<endl;}
template<typename T, typename ...S> void _do(T &&x, S &&...y){cerr<<x<<", ";_do(y...);}
#else
#define IOS() ios_base::sync_with_stdio(0);cin.tie(0);
#define endl '\n'
#define bug(...)
#endif


void GG(){cout<<"0\n"; exit(0);}
const ll mod = 1e9+7;
ll mpow(ll a, ll n, ll mo = mod){ // a^n % mod
    ll re=1;
    while (n>0){
        if (n&1) re = re*a %mo;
        a = a*a %mo;
        n>>=1;
    }
    return re;
}

ll inv (ll b, ll mo = mod){
    if (b==1) return b;
    return (mo-mo/b) * inv(mo%b,mo) % mo;
}

const int maxn = 1e6+5;
const int inf = 0x3f3f3f3f;

bool a[maxn], b[maxn];
int dp[maxn][2][3];
int n;
ll bad(){
    memset (dp, 0x3f, sizeof dp);
    int re = inf;
    dp[0][0][0] = 0;
    dp[0][1][0] = 1;
    REP1(i,n) {
        REP(flip, 2) {
            REP(fl, 3) {
                int &me = dp[i][flip][fl];
                if (fl == 0) {
                    if (flip == (a[i] ^ b[i])) {
                        MN(me, dp[i-1][flip][1]);
                        MN(me, dp[i-1][flip][2]);
                        MN(me, dp[i-1][flip][0]);
                        MN(me, dp[i-1][flip^1][0]+(flip==1));
                        MN(me, dp[i-1][flip^1][1] + (flip==1));
                        MN(me, dp[i-1][flip^1][2]);
                    }
                }else{
                    if (fl == 1)
                        MN(me, dp[i-1][flip][0]+1);

                    if (b[i] != b[i-1]) {
                        MN(me, dp[i-1][flip][fl^3] + (fl == 2));
//                        if (fl == 2) {
//                            MN(me, dp[i-1][flip^1][fl^3] + (fl == 2));
//                        }
                    }else{
                        MN(me, dp[i-1][flip][fl]);
                    }
                }
                if (i == n) {
                    MN(re, dp[i][flip][fl]);
                }
            }
        }
    }
    return re;
}

int fast[(1<<7)];

ll dumb(int A, int B, int n){
    memset(fast, 0x3f, sizeof fast);
    fast[B] = 0;
    queue<int> q; q.push(B);
    while (!q.empty()) {
        int v = q.front(); q.pop();
        REP(r,n) REP(l,r+1) {
            bool zero=0, one=0;
            for (int c = l; c<=r; ++c) {
                if (v & (1<<c)) one = 1;
                else zero = 1;
            }
            if (!zero || !one) {
                for (int m = 0; m<(1<<(r-l+1)); ++m) {
                    int tv = v;
                    for (int c = l; c<=r; ++c) {
                        if (m & (1<<(c-l))) {
                            tv ^= (1<<c);
                        }
                    }
                    if (fast[tv] > fast[v] + 1) {
                        fast[tv]  =fast[v] + 1;
                        q.push(tv);
                    }
                }
            }
            {
                int tv = v;
                for (int c = l; c<=r; ++c) {
                    tv ^= (1<<c);
                }
                if (fast[tv] > fast[v] + 1) {
                    fast[tv]  =fast[v] + 1;
                    q.push(tv);
                }
            }
        }
    }
    return fast[A];
}

signed main(){
    IOS();
    cin>>n;
    #ifndef BALBIT
    REP1(i,n) {
        char c; cin>>c; a[i] = c=='1';
    }
    REP1(i,n) {
        char c; cin>>c; b[i] = c=='1';
    }
    cout<<bad()<<endl;
    #else
    REP(i, 1000) {
        int A = 0, B = 0;
        REP1(i,n) {
            a[i] = rand() % 2;
            if (a[i]) A += (1<<(i-1));
            b[i] = rand() % 2;
            if (b[i]) B += (1<<(i-1));
        }
        ll hi = dumb(A,B,n);
        ll death = bad();
        if (hi != death) {
            REP1(i,n) cout<<a[i];
            cout<<endl;
            REP1(i,n) cout<<b[i];
            cout<<endl;
            cout<<hi<<' '<<death<<endl;
            assert(0);
        }
    }
    #endif

}
/*
7
0101001
1110010
*/

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 23788 KB Output is correct
2 Correct 13 ms 23788 KB Output is correct
3 Correct 13 ms 23788 KB Output is correct
4 Correct 13 ms 23788 KB Output is correct
5 Correct 14 ms 23788 KB Output is correct
6 Correct 13 ms 23788 KB Output is correct
7 Correct 14 ms 23788 KB Output is correct
8 Correct 14 ms 23788 KB Output is correct
9 Correct 13 ms 23788 KB Output is correct
10 Correct 14 ms 23788 KB Output is correct
11 Correct 13 ms 23788 KB Output is correct
12 Correct 14 ms 23788 KB Output is correct
13 Correct 14 ms 23788 KB Output is correct
14 Correct 13 ms 23788 KB Output is correct
15 Correct 13 ms 23788 KB Output is correct
16 Correct 13 ms 23788 KB Output is correct
17 Correct 13 ms 23788 KB Output is correct
18 Correct 14 ms 23788 KB Output is correct
19 Correct 13 ms 23788 KB Output is correct
20 Correct 13 ms 23788 KB Output is correct
21 Correct 13 ms 23788 KB Output is correct
22 Correct 13 ms 23788 KB Output is correct
23 Correct 13 ms 23788 KB Output is correct
24 Correct 13 ms 23788 KB Output is correct
25 Correct 13 ms 23788 KB Output is correct
26 Correct 13 ms 23788 KB Output is correct
27 Correct 14 ms 23788 KB Output is correct
28 Correct 13 ms 23788 KB Output is correct
29 Correct 13 ms 23788 KB Output is correct
30 Correct 14 ms 23788 KB Output is correct
31 Correct 13 ms 23788 KB Output is correct
32 Correct 13 ms 23788 KB Output is correct
33 Correct 14 ms 23788 KB Output is correct
34 Correct 17 ms 23788 KB Output is correct

Subtask #2
0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 23788 KB Output is correct
2 Correct 13 ms 23788 KB Output is correct
3 Correct 13 ms 23788 KB Output is correct
4 Correct 13 ms 23788 KB Output is correct
5 Correct 14 ms 23788 KB Output is correct
6 Correct 13 ms 23788 KB Output is correct
7 Correct 14 ms 23788 KB Output is correct
8 Correct 14 ms 23788 KB Output is correct
9 Correct 13 ms 23788 KB Output is correct
10 Correct 14 ms 23788 KB Output is correct
11 Correct 13 ms 23788 KB Output is correct
12 Correct 14 ms 23788 KB Output is correct
13 Correct 14 ms 23788 KB Output is correct
14 Correct 13 ms 23788 KB Output is correct
15 Correct 13 ms 23788 KB Output is correct
16 Correct 13 ms 23788 KB Output is correct
17 Correct 13 ms 23788 KB Output is correct
18 Correct 14 ms 23788 KB Output is correct
19 Correct 13 ms 23788 KB Output is correct
20 Correct 13 ms 23788 KB Output is correct
21 Correct 13 ms 23788 KB Output is correct
22 Correct 13 ms 23788 KB Output is correct
23 Correct 13 ms 23788 KB Output is correct
24 Correct 13 ms 23788 KB Output is correct
25 Correct 13 ms 23788 KB Output is correct
26 Correct 13 ms 23788 KB Output is correct
27 Correct 14 ms 23788 KB Output is correct
28 Correct 13 ms 23788 KB Output is correct
29 Correct 13 ms 23788 KB Output is correct
30 Correct 14 ms 23788 KB Output is correct
31 Correct 13 ms 23788 KB Output is correct
32 Correct 13 ms 23788 KB Output is correct
33 Correct 14 ms 23788 KB Output is correct
34 Correct 17 ms 23788 KB Output is correct
35 Correct 13 ms 23788 KB Output is correct
36 Correct 14 ms 23788 KB Output is correct
37 Correct 14 ms 23788 KB Output is correct
38 Correct 17 ms 23780 KB Output is correct
39 Correct 14 ms 23788 KB Output is correct
40 Incorrect 15 ms 23788 KB Output isn't correct
41 Halted 0 ms 0 KB -

Subtask #3
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 23788 KB Output is correct
2 Correct 17 ms 23788 KB Output is correct
3 Correct 14 ms 23788 KB Output is correct
4 Correct 14 ms 23788 KB Output is correct
5 Correct 14 ms 23916 KB Output is correct
6 Correct 14 ms 23916 KB Output is correct
7 Correct 75 ms 26136 KB Output is correct
8 Correct 73 ms 26272 KB Output is correct
9 Correct 82 ms 26148 KB Output is correct
10 Correct 75 ms 26220 KB Output is correct
11 Correct 77 ms 26220 KB Output is correct
12 Correct 77 ms 26220 KB Output is correct
13 Correct 76 ms 26220 KB Output is correct
14 Correct 77 ms 26220 KB Output is correct

Subtask #4
0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 23788 KB Output is correct
2 Correct 13 ms 23788 KB Output is correct
3 Correct 13 ms 23788 KB Output is correct
4 Correct 13 ms 23788 KB Output is correct
5 Correct 14 ms 23788 KB Output is correct
6 Correct 13 ms 23788 KB Output is correct
7 Correct 14 ms 23788 KB Output is correct
8 Correct 14 ms 23788 KB Output is correct
9 Correct 13 ms 23788 KB Output is correct
10 Correct 14 ms 23788 KB Output is correct
11 Correct 13 ms 23788 KB Output is correct
12 Correct 14 ms 23788 KB Output is correct
13 Correct 14 ms 23788 KB Output is correct
14 Correct 13 ms 23788 KB Output is correct
15 Correct 13 ms 23788 KB Output is correct
16 Correct 13 ms 23788 KB Output is correct
17 Correct 13 ms 23788 KB Output is correct
18 Correct 14 ms 23788 KB Output is correct
19 Correct 13 ms 23788 KB Output is correct
20 Correct 13 ms 23788 KB Output is correct
21 Correct 13 ms 23788 KB Output is correct
22 Correct 13 ms 23788 KB Output is correct
23 Correct 13 ms 23788 KB Output is correct
24 Correct 13 ms 23788 KB Output is correct
25 Correct 13 ms 23788 KB Output is correct
26 Correct 13 ms 23788 KB Output is correct
27 Correct 14 ms 23788 KB Output is correct
28 Correct 13 ms 23788 KB Output is correct
29 Correct 13 ms 23788 KB Output is correct
30 Correct 14 ms 23788 KB Output is correct
31 Correct 13 ms 23788 KB Output is correct
32 Correct 13 ms 23788 KB Output is correct
33 Correct 14 ms 23788 KB Output is correct
34 Correct 17 ms 23788 KB Output is correct
35 Correct 13 ms 23788 KB Output is correct
36 Correct 14 ms 23788 KB Output is correct
37 Correct 14 ms 23788 KB Output is correct
38 Correct 17 ms 23780 KB Output is correct
39 Correct 14 ms 23788 KB Output is correct
40 Incorrect 15 ms 23788 KB Output isn't correct
41 Halted 0 ms 0 KB -