oj.uz

Submission #588688

# Submission time Handle Problem Language Result Execution time Memory
588688 2022-07-03T21:02:57 Z jeroenodb Lamps (JOI19_lamps) C++14
10 / 100
 54 ms 4452 KB 
#include "bits/stdc++.h"
using namespace std;
#define all(x) begin(x),end(x)
template<typename A, typename B> ostream& operator<<(ostream &os, const pair<A, B> &p) { return os << '(' << p.first << ", " << p.second << ')'; }
template<typename T_container, typename T = typename enable_if<!is_same<T_container, string>::value, typename T_container::value_type>::type> ostream& operator<<(ostream &os, const T_container &v) { string sep; for (const T &x : v) os << sep << x, sep = " "; return os; }
#define debug(a) cerr << "(" << #a << ": " << a << ")\n";
typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int,int> pi;
const int mxN = 1e5+1, oo = 1e9;
int main() {
    int n; cin >> n;
    string a,b; cin >> a >> b;
    for(auto& i : a) i-='0';
    for(auto& i : b) i-='0';
    for(int i=n-1;i>0;--i) {
        a[i] ^= a[i-1];
        b[i] ^= b[i-1];
    }
    int dp=0,dp2=oo,dp3=oo;
    for(int i=0;i<n;++i) {
        
        int dif = (a[i]!=b[i]);
        tie(dp,dp2,dp3) = make_tuple(min({dp+dif, dp2+dif,dp3+!dif}), min(dp+2 + !a[i],dp2+b[i]),min(dp+2 + a[i], dp3+b[i]));
        if(a[i]) swap(dp2,dp3);
        
    }
    cout << (min({dp,dp3,dp2})+1)/2;

}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 296 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 304 KB Output is correct
5 Correct 0 ms 300 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 296 KB Output is correct
9 Correct 0 ms 300 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 304 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 300 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 296 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 0 ms 296 KB Output is correct
19 Correct 0 ms 300 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 0 ms 300 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 1 ms 304 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 1 ms 300 KB Output is correct
33 Correct 0 ms 304 KB Output is correct
34 Correct 0 ms 212 KB Output is correct

Subtask #2
0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 296 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 304 KB Output is correct
5 Correct 0 ms 300 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 296 KB Output is correct
9 Correct 0 ms 300 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 304 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 300 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 296 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 0 ms 296 KB Output is correct
19 Correct 0 ms 300 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 0 ms 300 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 1 ms 304 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 1 ms 300 KB Output is correct
33 Correct 0 ms 304 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 1 ms 212 KB Output is correct
38 Correct 1 ms 300 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 1 ms 296 KB Output is correct
41 Correct 1 ms 212 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Incorrect 1 ms 296 KB Output isn't correct
44 Halted 0 ms 0 KB -

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 300 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 300 KB Output is correct
7 Correct 51 ms 4452 KB Output is correct
8 Correct 51 ms 4380 KB Output is correct
9 Correct 51 ms 4328 KB Output is correct
10 Correct 54 ms 4332 KB Output is correct
11 Correct 51 ms 4420 KB Output is correct
12 Correct 49 ms 4372 KB Output is correct
13 Correct 50 ms 4324 KB Output is correct
14 Correct 51 ms 4324 KB Output is correct

Subtask #4
0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 296 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 304 KB Output is correct
5 Correct 0 ms 300 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 296 KB Output is correct
9 Correct 0 ms 300 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 304 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 300 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 296 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 0 ms 296 KB Output is correct
19 Correct 0 ms 300 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 0 ms 300 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 1 ms 304 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 1 ms 300 KB Output is correct
33 Correct 0 ms 304 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 1 ms 212 KB Output is correct
38 Correct 1 ms 300 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 1 ms 296 KB Output is correct
41 Correct 1 ms 212 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Incorrect 1 ms 296 KB Output isn't correct
44 Halted 0 ms 0 KB -