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Submission #866750

# Submission time Handle Problem Language Result Execution time Memory
866750 2023-10-27T02:11:42 Z browntoad Lamps (JOI19_lamps) C++14
100 / 100
 16 ms 16984 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 pip pair<int, pii>
#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 inf = (1ll<<30);
const ll mod = 998244353;
const ll maxn=1e6+5;
const ll maxm=5e4+5;
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,m);
}
int dp[maxn][3];
bool chan[maxn][3];
int n;
signed main(){
    IOS();
    cin>>n;
    string a, b; cin>>a>>b;
    a = '0'+a; b = '0'+b;
    dp[0][0] = 1;
    dp[0][1] = inf;
    dp[0][2] = 0;
    REP1(i, n){
        bool x = a[i]-'0', y = b[i]-'0';
        chan[i][0] = (y!=0);
        chan[i][1] = (y!=1);
        chan[i][2] = (x!=y);
        REP(j, 3){
            dp[i][j] = inf;
            REP(l, 3){
                dp[i][j] = min(dp[i][j], dp[i-1][l] + (j!=2 && l!=j) + (!chan[i-1][l] && chan[i][j]));
            }
        }
    }
    cout<<min({dp[n][0], dp[n][1], dp[n][2]})<<endl;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 0 ms 2392 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 0 ms 2392 KB Output is correct
19 Correct 1 ms 2392 KB Output is correct
20 Correct 0 ms 2392 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 0 ms 2396 KB Output is correct
23 Correct 0 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 0 ms 2396 KB Output is correct
26 Correct 0 ms 2396 KB Output is correct
27 Correct 0 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 0 ms 2396 KB Output is correct
30 Correct 0 ms 2396 KB Output is correct
31 Correct 0 ms 2396 KB Output is correct
32 Correct 0 ms 2396 KB Output is correct
33 Correct 0 ms 2396 KB Output is correct
34 Correct 0 ms 2396 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 0 ms 2392 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 0 ms 2392 KB Output is correct
19 Correct 1 ms 2392 KB Output is correct
20 Correct 0 ms 2392 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 0 ms 2396 KB Output is correct
23 Correct 0 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 0 ms 2396 KB Output is correct
26 Correct 0 ms 2396 KB Output is correct
27 Correct 0 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 0 ms 2396 KB Output is correct
30 Correct 0 ms 2396 KB Output is correct
31 Correct 0 ms 2396 KB Output is correct
32 Correct 0 ms 2396 KB Output is correct
33 Correct 0 ms 2396 KB Output is correct
34 Correct 0 ms 2396 KB Output is correct
35 Correct 0 ms 2392 KB Output is correct
36 Correct 1 ms 2392 KB Output is correct
37 Correct 0 ms 2396 KB Output is correct
38 Correct 0 ms 2396 KB Output is correct
39 Correct 0 ms 2396 KB Output is correct
40 Correct 1 ms 2396 KB Output is correct
41 Correct 0 ms 2396 KB Output is correct
42 Correct 1 ms 2548 KB Output is correct
43 Correct 0 ms 2396 KB Output is correct
44 Correct 0 ms 2396 KB Output is correct
45 Correct 0 ms 2396 KB Output is correct
46 Correct 0 ms 2396 KB Output is correct
47 Correct 0 ms 2396 KB Output is correct
48 Correct 1 ms 2396 KB Output is correct
49 Correct 1 ms 2396 KB Output is correct
50 Correct 0 ms 2396 KB Output is correct
51 Correct 0 ms 2396 KB Output is correct
52 Correct 0 ms 2396 KB Output is correct
53 Correct 0 ms 2396 KB Output is correct
54 Correct 0 ms 2396 KB Output is correct
55 Correct 0 ms 2396 KB Output is correct
56 Correct 0 ms 2396 KB Output is correct
57 Correct 0 ms 2396 KB Output is correct
58 Correct 0 ms 2396 KB Output is correct

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 12 ms 16900 KB Output is correct
8 Correct 12 ms 16896 KB Output is correct
9 Correct 14 ms 16904 KB Output is correct
10 Correct 12 ms 16960 KB Output is correct
11 Correct 12 ms 16980 KB Output is correct
12 Correct 12 ms 16972 KB Output is correct
13 Correct 12 ms 16952 KB Output is correct
14 Correct 12 ms 16904 KB Output is correct

Subtask #4
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 0 ms 2392 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 0 ms 2392 KB Output is correct
19 Correct 1 ms 2392 KB Output is correct
20 Correct 0 ms 2392 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 0 ms 2396 KB Output is correct
23 Correct 0 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 0 ms 2396 KB Output is correct
26 Correct 0 ms 2396 KB Output is correct
27 Correct 0 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 0 ms 2396 KB Output is correct
30 Correct 0 ms 2396 KB Output is correct
31 Correct 0 ms 2396 KB Output is correct
32 Correct 0 ms 2396 KB Output is correct
33 Correct 0 ms 2396 KB Output is correct
34 Correct 0 ms 2396 KB Output is correct
35 Correct 0 ms 2392 KB Output is correct
36 Correct 1 ms 2392 KB Output is correct
37 Correct 0 ms 2396 KB Output is correct
38 Correct 0 ms 2396 KB Output is correct
39 Correct 0 ms 2396 KB Output is correct
40 Correct 1 ms 2396 KB Output is correct
41 Correct 0 ms 2396 KB Output is correct
42 Correct 1 ms 2548 KB Output is correct
43 Correct 0 ms 2396 KB Output is correct
44 Correct 0 ms 2396 KB Output is correct
45 Correct 0 ms 2396 KB Output is correct
46 Correct 0 ms 2396 KB Output is correct
47 Correct 0 ms 2396 KB Output is correct
48 Correct 1 ms 2396 KB Output is correct
49 Correct 1 ms 2396 KB Output is correct
50 Correct 0 ms 2396 KB Output is correct
51 Correct 0 ms 2396 KB Output is correct
52 Correct 0 ms 2396 KB Output is correct
53 Correct 0 ms 2396 KB Output is correct
54 Correct 0 ms 2396 KB Output is correct
55 Correct 0 ms 2396 KB Output is correct
56 Correct 0 ms 2396 KB Output is correct
57 Correct 0 ms 2396 KB Output is correct
58 Correct 0 ms 2396 KB Output is correct
59 Correct 0 ms 2396 KB Output is correct
60 Correct 1 ms 2396 KB Output is correct
61 Correct 0 ms 2396 KB Output is correct
62 Correct 0 ms 2396 KB Output is correct
63 Correct 0 ms 2396 KB Output is correct
64 Correct 0 ms 2396 KB Output is correct
65 Correct 12 ms 16900 KB Output is correct
66 Correct 12 ms 16896 KB Output is correct
67 Correct 14 ms 16904 KB Output is correct
68 Correct 12 ms 16960 KB Output is correct
69 Correct 12 ms 16980 KB Output is correct
70 Correct 12 ms 16972 KB Output is correct
71 Correct 12 ms 16952 KB Output is correct
72 Correct 12 ms 16904 KB Output is correct
73 Correct 12 ms 16896 KB Output is correct
74 Correct 12 ms 16900 KB Output is correct
75 Correct 12 ms 16900 KB Output is correct
76 Correct 12 ms 16900 KB Output is correct
77 Correct 12 ms 16972 KB Output is correct
78 Correct 15 ms 16900 KB Output is correct
79 Correct 12 ms 16984 KB Output is correct
80 Correct 12 ms 16904 KB Output is correct
81 Correct 12 ms 16904 KB Output is correct
82 Correct 12 ms 16948 KB Output is correct
83 Correct 12 ms 16972 KB Output is correct
84 Correct 13 ms 16900 KB Output is correct
85 Correct 12 ms 16900 KB Output is correct
86 Correct 12 ms 16896 KB Output is correct
87 Correct 12 ms 16900 KB Output is correct
88 Correct 12 ms 16900 KB Output is correct
89 Correct 12 ms 16900 KB Output is correct
90 Correct 12 ms 16900 KB Output is correct
91 Correct 12 ms 16964 KB Output is correct
92 Correct 12 ms 16900 KB Output is correct
93 Correct 12 ms 16964 KB Output is correct
94 Correct 12 ms 16960 KB Output is correct
95 Correct 12 ms 16960 KB Output is correct
96 Correct 16 ms 16896 KB Output is correct
97 Correct 12 ms 16900 KB Output is correct
98 Correct 12 ms 16968 KB Output is correct
99 Correct 12 ms 16904 KB Output is correct
100 Correct 12 ms 16900 KB Output is correct
101 Correct 12 ms 16904 KB Output is correct
102 Correct 12 ms 16956 KB Output is correct