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답안 #384794

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
384794 2021-04-02T09:42:21 Z kostia244 Lamps (JOI19_lamps) C++17
4 / 100
 60 ms 26044 KB 
#include<bits/stdc++.h>
using namespace std;
const int maxn = 1e6 + 12;
int dp[maxn][3][2];
void minq(int &a, int b) {
    a = min(a, b);
}
int main() {
    cin.tie(0)->sync_with_stdio(0);
    int n;
    string a, b;
    cin >> n >> a >> b;
    memset(dp, 0x3f, sizeof dp);
    dp[0][0][0] = 0;
    for(int i = 0; i < n; i++) {
        for(int lst = 0; lst < 3; lst++) {
            dp[i][lst][0] = min(dp[i][lst][0], dp[i][lst][1]);
            dp[i][lst][1] = min(dp[i][lst][1], dp[i][lst][0]+1);
            for(int rev = 0; rev < 2; rev++) {
                int cur = (a[i]-'0')^rev;
                int targ = b[i]-'0';
                if((cur == targ && !lst) || lst-1 == targ)
                    minq(dp[i+1][lst][rev], dp[i][lst][rev]);
                if(cur == targ)
                    minq(dp[i+1][0][rev], dp[i][lst][rev]);
                minq(dp[i+1][1+targ][rev], dp[i][lst][rev]+1);
            }
        }
    }
    int ans = 69<<20;
    for(int i = 0; i < 3; i++)
        for(int j = 0; j < 2; j++)
            ans = min(dp[n][i][j], ans);
    cout << ans << '\n';
}

Subtask #1
0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 23788 KB Output is correct
2 Correct 14 ms 23788 KB Output is correct
3 Correct 15 ms 23916 KB Output is correct
4 Correct 14 ms 23788 KB Output is correct
5 Correct 14 ms 23788 KB Output is correct
6 Correct 15 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 15 ms 23788 KB Output is correct
10 Correct 14 ms 23788 KB Output is correct
11 Correct 16 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 14 ms 23788 KB Output is correct
15 Correct 17 ms 23788 KB Output is correct
16 Incorrect 14 ms 23788 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #2
0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 23788 KB Output is correct
2 Correct 14 ms 23788 KB Output is correct
3 Correct 15 ms 23916 KB Output is correct
4 Correct 14 ms 23788 KB Output is correct
5 Correct 14 ms 23788 KB Output is correct
6 Correct 15 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 15 ms 23788 KB Output is correct
10 Correct 14 ms 23788 KB Output is correct
11 Correct 16 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 14 ms 23788 KB Output is correct
15 Correct 17 ms 23788 KB Output is correct
16 Incorrect 14 ms 23788 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #3
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 23788 KB Output is correct
2 Correct 14 ms 23788 KB Output is correct
3 Correct 15 ms 23788 KB Output is correct
4 Correct 14 ms 23788 KB Output is correct
5 Correct 17 ms 23788 KB Output is correct
6 Correct 16 ms 23788 KB Output is correct
7 Correct 59 ms 25916 KB Output is correct
8 Correct 60 ms 26044 KB Output is correct
9 Correct 59 ms 25916 KB Output is correct
10 Correct 60 ms 26044 KB Output is correct
11 Correct 59 ms 25916 KB Output is correct
12 Correct 59 ms 25916 KB Output is correct
13 Correct 59 ms 25916 KB Output is correct
14 Correct 59 ms 25916 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 14 ms 23788 KB Output is correct
3 Correct 15 ms 23916 KB Output is correct
4 Correct 14 ms 23788 KB Output is correct
5 Correct 14 ms 23788 KB Output is correct
6 Correct 15 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 15 ms 23788 KB Output is correct
10 Correct 14 ms 23788 KB Output is correct
11 Correct 16 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 14 ms 23788 KB Output is correct
15 Correct 17 ms 23788 KB Output is correct
16 Incorrect 14 ms 23788 KB Output isn't correct
17 Halted 0 ms 0 KB -