#include <bits/stdc++.h>
using namespace std;
#define int int64_t
int32_t main() {
int N; cin >> N; string A, B; cin >> A >> B;
int dp[N][3][2]; // idx, got 0 and got 1, got flip
if(A[0] == B[0]) dp[0][0][0] = 0;
else dp[0][0][0] = 1e15;
if(B[0] == '0') dp[0][1][0] = 1;
else dp[0][1][0] = 1e15;
if(B[0] == '1') dp[0][2][0] = 1;
else dp[0][2][0] = 1e15;
if(A[0] != B[0]) dp[0][0][1] = 1;
else dp[0][0][1] = 1e15;
dp[0][1][1] = 2; dp[0][2][1] = 2;
for(int i = 1; i < N; i++) {
int minprev = 1e15;
for(int j = 0; j < 3; j++) for(int k = 0; k < 2; k++) {
minprev = min(minprev, dp[i - 1][j][k]);
}
if(A[i] == B[i]) dp[i][0][0] = minprev;
else dp[i][0][0] = 1e15;
if(B[i] == '0') dp[i][1][0] = min(minprev + 1, min(dp[i - 1][1][0], dp[i - 1][1][1]));
else dp[i][1][0] = 1e15;
if(B[i] == '1') dp[i][2][0] = min(minprev + 1, min(dp[i - 1][2][0], dp[i - 1][2][1]));
else dp[i][2][0] = 1e15;
if(A[i] != B[i]) dp[i][0][1] = min(minprev + 1, min(dp[i - 1][0][1], min(dp[i - 1][1][1], dp[i - 1][2][1])));
else dp[i][0][1] = 1e15;
dp[i][1][1] = min(minprev + 2, min(dp[i - 1][1][0], dp[i - 1][1][1]) + 1);
dp[i][1][1] = min(dp[i][1][1], min(min(dp[i - 1][0][1], dp[i - 1][1][1]), dp[i - 1][2][1]) + 1);
if(B[i] == B[i - 1]) {
dp[i][1][1] = min(dp[i][1][1], dp[i - 1][1][1]);
}
dp[i][2][1] = min(minprev + 2, min(dp[i - 1][2][0], dp[i - 1][2][1]) + 1);
dp[i][2][1] = min(dp[i][2][1], min(min(dp[i - 1][0][1], dp[i - 1][1][1]), dp[i - 1][2][1]) + 1);
if(B[i] == B[i - 1]) {
dp[i][2][1] = min(dp[i][2][1], dp[i - 1][2][1]);
}
// for(int k = 0; k < 3; k++) for(int j = 0; j < 2; j++) printf("%d %d %d %lld\n", i, k, j, dp[i][k][j]);
}
int ans = 1e15;
for(int i = 0; i < 3; i++) for(int j = 0; j < 2; j++) ans = min(ans, dp[N - 1][i][j]);
cout << ans;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
212 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 |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
0 ms |
212 KB |
Output is correct |
| 11 |
Correct |
0 ms |
212 KB |
Output is correct |
| 12 |
Correct |
0 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
212 KB |
Output is correct |
| 14 |
Correct |
0 ms |
212 KB |
Output is correct |
| 15 |
Correct |
0 ms |
212 KB |
Output is correct |
| 16 |
Correct |
0 ms |
212 KB |
Output is correct |
| 17 |
Correct |
0 ms |
212 KB |
Output is correct |
| 18 |
Correct |
1 ms |
212 KB |
Output is correct |
| 19 |
Correct |
0 ms |
212 KB |
Output is correct |
| 20 |
Correct |
0 ms |
212 KB |
Output is correct |
| 21 |
Correct |
0 ms |
212 KB |
Output is correct |
| 22 |
Correct |
1 ms |
212 KB |
Output is correct |
| 23 |
Correct |
0 ms |
212 KB |
Output is correct |
| 24 |
Correct |
0 ms |
212 KB |
Output is correct |
| 25 |
Correct |
0 ms |
212 KB |
Output is correct |
| 26 |
Correct |
0 ms |
212 KB |
Output is correct |
| 27 |
Correct |
1 ms |
212 KB |
Output is correct |
| 28 |
Correct |
0 ms |
212 KB |
Output is correct |
| 29 |
Correct |
0 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 |
296 KB |
Output is correct |
| 33 |
Correct |
0 ms |
212 KB |
Output is correct |
| 34 |
Correct |
1 ms |
212 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
212 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 |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
0 ms |
212 KB |
Output is correct |
| 11 |
Correct |
0 ms |
212 KB |
Output is correct |
| 12 |
Correct |
0 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
212 KB |
Output is correct |
| 14 |
Correct |
0 ms |
212 KB |
Output is correct |
| 15 |
Correct |
0 ms |
212 KB |
Output is correct |
| 16 |
Correct |
0 ms |
212 KB |
Output is correct |
| 17 |
Correct |
0 ms |
212 KB |
Output is correct |
| 18 |
Correct |
1 ms |
212 KB |
Output is correct |
| 19 |
Correct |
0 ms |
212 KB |
Output is correct |
| 20 |
Correct |
0 ms |
212 KB |
Output is correct |
| 21 |
Correct |
0 ms |
212 KB |
Output is correct |
| 22 |
Correct |
1 ms |
212 KB |
Output is correct |
| 23 |
Correct |
0 ms |
212 KB |
Output is correct |
| 24 |
Correct |
0 ms |
212 KB |
Output is correct |
| 25 |
Correct |
0 ms |
212 KB |
Output is correct |
| 26 |
Correct |
0 ms |
212 KB |
Output is correct |
| 27 |
Correct |
1 ms |
212 KB |
Output is correct |
| 28 |
Correct |
0 ms |
212 KB |
Output is correct |
| 29 |
Correct |
0 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 |
296 KB |
Output is correct |
| 33 |
Correct |
0 ms |
212 KB |
Output is correct |
| 34 |
Correct |
1 ms |
212 KB |
Output is correct |
| 35 |
Correct |
1 ms |
340 KB |
Output is correct |
| 36 |
Correct |
1 ms |
340 KB |
Output is correct |
| 37 |
Correct |
1 ms |
340 KB |
Output is correct |
| 38 |
Correct |
1 ms |
340 KB |
Output is correct |
| 39 |
Correct |
1 ms |
340 KB |
Output is correct |
| 40 |
Correct |
1 ms |
340 KB |
Output is correct |
| 41 |
Correct |
1 ms |
340 KB |
Output is correct |
| 42 |
Correct |
1 ms |
340 KB |
Output is correct |
| 43 |
Correct |
1 ms |
300 KB |
Output is correct |
| 44 |
Correct |
1 ms |
340 KB |
Output is correct |
| 45 |
Correct |
1 ms |
300 KB |
Output is correct |
| 46 |
Correct |
1 ms |
340 KB |
Output is correct |
| 47 |
Correct |
1 ms |
340 KB |
Output is correct |
| 48 |
Correct |
1 ms |
340 KB |
Output is correct |
| 49 |
Correct |
1 ms |
340 KB |
Output is correct |
| 50 |
Correct |
1 ms |
340 KB |
Output is correct |
| 51 |
Correct |
1 ms |
340 KB |
Output is correct |
| 52 |
Correct |
1 ms |
340 KB |
Output is correct |
| 53 |
Correct |
1 ms |
340 KB |
Output is correct |
| 54 |
Correct |
1 ms |
340 KB |
Output is correct |
| 55 |
Correct |
1 ms |
340 KB |
Output is correct |
| 56 |
Correct |
1 ms |
340 KB |
Output is correct |
| 57 |
Correct |
1 ms |
340 KB |
Output is correct |
| 58 |
Correct |
1 ms |
340 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
212 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 |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
74 ms |
49308 KB |
Output is correct |
| 8 |
Correct |
69 ms |
49272 KB |
Output is correct |
| 9 |
Correct |
77 ms |
49560 KB |
Output is correct |
| 10 |
Correct |
68 ms |
49256 KB |
Output is correct |
| 11 |
Correct |
68 ms |
49252 KB |
Output is correct |
| 12 |
Correct |
69 ms |
49340 KB |
Output is correct |
| 13 |
Correct |
74 ms |
49256 KB |
Output is correct |
| 14 |
Correct |
68 ms |
49340 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
212 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 |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
0 ms |
212 KB |
Output is correct |
| 11 |
Correct |
0 ms |
212 KB |
Output is correct |
| 12 |
Correct |
0 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
212 KB |
Output is correct |
| 14 |
Correct |
0 ms |
212 KB |
Output is correct |
| 15 |
Correct |
0 ms |
212 KB |
Output is correct |
| 16 |
Correct |
0 ms |
212 KB |
Output is correct |
| 17 |
Correct |
0 ms |
212 KB |
Output is correct |
| 18 |
Correct |
1 ms |
212 KB |
Output is correct |
| 19 |
Correct |
0 ms |
212 KB |
Output is correct |
| 20 |
Correct |
0 ms |
212 KB |
Output is correct |
| 21 |
Correct |
0 ms |
212 KB |
Output is correct |
| 22 |
Correct |
1 ms |
212 KB |
Output is correct |
| 23 |
Correct |
0 ms |
212 KB |
Output is correct |
| 24 |
Correct |
0 ms |
212 KB |
Output is correct |
| 25 |
Correct |
0 ms |
212 KB |
Output is correct |
| 26 |
Correct |
0 ms |
212 KB |
Output is correct |
| 27 |
Correct |
1 ms |
212 KB |
Output is correct |
| 28 |
Correct |
0 ms |
212 KB |
Output is correct |
| 29 |
Correct |
0 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 |
296 KB |
Output is correct |
| 33 |
Correct |
0 ms |
212 KB |
Output is correct |
| 34 |
Correct |
1 ms |
212 KB |
Output is correct |
| 35 |
Correct |
1 ms |
340 KB |
Output is correct |
| 36 |
Correct |
1 ms |
340 KB |
Output is correct |
| 37 |
Correct |
1 ms |
340 KB |
Output is correct |
| 38 |
Correct |
1 ms |
340 KB |
Output is correct |
| 39 |
Correct |
1 ms |
340 KB |
Output is correct |
| 40 |
Correct |
1 ms |
340 KB |
Output is correct |
| 41 |
Correct |
1 ms |
340 KB |
Output is correct |
| 42 |
Correct |
1 ms |
340 KB |
Output is correct |
| 43 |
Correct |
1 ms |
300 KB |
Output is correct |
| 44 |
Correct |
1 ms |
340 KB |
Output is correct |
| 45 |
Correct |
1 ms |
300 KB |
Output is correct |
| 46 |
Correct |
1 ms |
340 KB |
Output is correct |
| 47 |
Correct |
1 ms |
340 KB |
Output is correct |
| 48 |
Correct |
1 ms |
340 KB |
Output is correct |
| 49 |
Correct |
1 ms |
340 KB |
Output is correct |
| 50 |
Correct |
1 ms |
340 KB |
Output is correct |
| 51 |
Correct |
1 ms |
340 KB |
Output is correct |
| 52 |
Correct |
1 ms |
340 KB |
Output is correct |
| 53 |
Correct |
1 ms |
340 KB |
Output is correct |
| 54 |
Correct |
1 ms |
340 KB |
Output is correct |
| 55 |
Correct |
1 ms |
340 KB |
Output is correct |
| 56 |
Correct |
1 ms |
340 KB |
Output is correct |
| 57 |
Correct |
1 ms |
340 KB |
Output is correct |
| 58 |
Correct |
1 ms |
340 KB |
Output is correct |
| 59 |
Correct |
0 ms |
212 KB |
Output is correct |
| 60 |
Correct |
0 ms |
212 KB |
Output is correct |
| 61 |
Correct |
0 ms |
212 KB |
Output is correct |
| 62 |
Correct |
0 ms |
212 KB |
Output is correct |
| 63 |
Correct |
0 ms |
212 KB |
Output is correct |
| 64 |
Correct |
0 ms |
212 KB |
Output is correct |
| 65 |
Correct |
74 ms |
49308 KB |
Output is correct |
| 66 |
Correct |
69 ms |
49272 KB |
Output is correct |
| 67 |
Correct |
77 ms |
49560 KB |
Output is correct |
| 68 |
Correct |
68 ms |
49256 KB |
Output is correct |
| 69 |
Correct |
68 ms |
49252 KB |
Output is correct |
| 70 |
Correct |
69 ms |
49340 KB |
Output is correct |
| 71 |
Correct |
74 ms |
49256 KB |
Output is correct |
| 72 |
Correct |
68 ms |
49340 KB |
Output is correct |
| 73 |
Correct |
75 ms |
51404 KB |
Output is correct |
| 74 |
Correct |
69 ms |
51260 KB |
Output is correct |
| 75 |
Correct |
70 ms |
51220 KB |
Output is correct |
| 76 |
Correct |
69 ms |
51180 KB |
Output is correct |
| 77 |
Correct |
71 ms |
51204 KB |
Output is correct |
| 78 |
Correct |
69 ms |
51232 KB |
Output is correct |
| 79 |
Correct |
68 ms |
51296 KB |
Output is correct |
| 80 |
Correct |
69 ms |
51236 KB |
Output is correct |
| 81 |
Correct |
78 ms |
51216 KB |
Output is correct |
| 82 |
Correct |
69 ms |
51268 KB |
Output is correct |
| 83 |
Correct |
72 ms |
51204 KB |
Output is correct |
| 84 |
Correct |
72 ms |
51248 KB |
Output is correct |
| 85 |
Correct |
72 ms |
51276 KB |
Output is correct |
| 86 |
Correct |
72 ms |
51256 KB |
Output is correct |
| 87 |
Correct |
72 ms |
51256 KB |
Output is correct |
| 88 |
Correct |
72 ms |
51176 KB |
Output is correct |
| 89 |
Correct |
71 ms |
51200 KB |
Output is correct |
| 90 |
Correct |
79 ms |
51216 KB |
Output is correct |
| 91 |
Correct |
75 ms |
51300 KB |
Output is correct |
| 92 |
Correct |
74 ms |
51280 KB |
Output is correct |
| 93 |
Correct |
76 ms |
51244 KB |
Output is correct |
| 94 |
Correct |
75 ms |
51296 KB |
Output is correct |
| 95 |
Correct |
76 ms |
51260 KB |
Output is correct |
| 96 |
Correct |
82 ms |
51456 KB |
Output is correct |
| 97 |
Correct |
76 ms |
51304 KB |
Output is correct |
| 98 |
Correct |
77 ms |
51240 KB |
Output is correct |
| 99 |
Correct |
74 ms |
51196 KB |
Output is correct |
| 100 |
Correct |
75 ms |
51296 KB |
Output is correct |
| 101 |
Correct |
75 ms |
51284 KB |
Output is correct |
| 102 |
Correct |
76 ms |
51260 KB |
Output is correct |
