#include <bits/stdc++.h>
#define int long long
using namespace std;
const int MAXN = 1e6+1;
int dp[MAXN][2][3];
signed main(void)
{
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
int nbCarac;
cin >> nbCarac;
string have, want;
cin >> have >> want;
vector<bool> from(nbCarac), to(nbCarac);
for (int iCarac(0); iCarac < nbCarac; ++iCarac)
from[iCarac] = have[iCarac] - '0', to[iCarac] = want[iCarac] - '0';
for (int i(0); i < MAXN; ++i)
for (int j(0); j < 2; ++j)
for (int k(0); k < 3; ++k)
dp[i][j][k] = 1e9;
dp[0][0][2] = 0;
for (int nbVus(1); nbVus <= nbCarac; ++nbVus)
for (int flip(0); flip < 2; ++flip)
for (int set(0); set < 3; ++set)
if ( (set == 2 and (from[nbVus-1] ^ flip) == to[nbVus-1])
or (set != 2 and (set ^ flip) == to[nbVus-1]))
{
int &cur = dp[nbVus][flip][set];
for (int prvFlip(0); prvFlip < 2; ++prvFlip)
for (int prvSet(0); prvSet < 3; ++prvSet)
{
int cost = (!prvFlip and flip) + (set != 2 and set != prvSet);
cur = min(cur, cost + dp[nbVus-1][prvFlip][prvSet]);
}
}
int ret = 1e9;
for (int i(0); i < 2; ++i)
for (int j(0); j < 3; ++j)
ret = min(ret, dp[nbCarac][i][j]);
cout << ret << endl;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
23 ms |
47180 KB |
Output is correct |
| 2 |
Correct |
23 ms |
47244 KB |
Output is correct |
| 3 |
Correct |
23 ms |
47272 KB |
Output is correct |
| 4 |
Correct |
23 ms |
47196 KB |
Output is correct |
| 5 |
Correct |
23 ms |
47284 KB |
Output is correct |
| 6 |
Correct |
22 ms |
47216 KB |
Output is correct |
| 7 |
Correct |
22 ms |
47276 KB |
Output is correct |
| 8 |
Correct |
24 ms |
47176 KB |
Output is correct |
| 9 |
Correct |
23 ms |
47244 KB |
Output is correct |
| 10 |
Correct |
22 ms |
47280 KB |
Output is correct |
| 11 |
Correct |
23 ms |
47184 KB |
Output is correct |
| 12 |
Correct |
23 ms |
47264 KB |
Output is correct |
| 13 |
Correct |
21 ms |
47172 KB |
Output is correct |
| 14 |
Correct |
23 ms |
47144 KB |
Output is correct |
| 15 |
Correct |
23 ms |
47184 KB |
Output is correct |
| 16 |
Correct |
24 ms |
47172 KB |
Output is correct |
| 17 |
Correct |
23 ms |
47168 KB |
Output is correct |
| 18 |
Correct |
23 ms |
47236 KB |
Output is correct |
| 19 |
Correct |
22 ms |
47180 KB |
Output is correct |
| 20 |
Correct |
24 ms |
47232 KB |
Output is correct |
| 21 |
Correct |
21 ms |
47172 KB |
Output is correct |
| 22 |
Correct |
23 ms |
47184 KB |
Output is correct |
| 23 |
Correct |
23 ms |
47240 KB |
Output is correct |
| 24 |
Correct |
23 ms |
47232 KB |
Output is correct |
| 25 |
Correct |
24 ms |
47172 KB |
Output is correct |
| 26 |
Correct |
23 ms |
47216 KB |
Output is correct |
| 27 |
Correct |
23 ms |
47208 KB |
Output is correct |
| 28 |
Correct |
25 ms |
47288 KB |
Output is correct |
| 29 |
Correct |
23 ms |
47284 KB |
Output is correct |
| 30 |
Correct |
23 ms |
47172 KB |
Output is correct |
| 31 |
Correct |
23 ms |
47220 KB |
Output is correct |
| 32 |
Correct |
23 ms |
47180 KB |
Output is correct |
| 33 |
Correct |
23 ms |
47284 KB |
Output is correct |
| 34 |
Correct |
23 ms |
47196 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
23 ms |
47180 KB |
Output is correct |
| 2 |
Correct |
23 ms |
47244 KB |
Output is correct |
| 3 |
Correct |
23 ms |
47272 KB |
Output is correct |
| 4 |
Correct |
23 ms |
47196 KB |
Output is correct |
| 5 |
Correct |
23 ms |
47284 KB |
Output is correct |
| 6 |
Correct |
22 ms |
47216 KB |
Output is correct |
| 7 |
Correct |
22 ms |
47276 KB |
Output is correct |
| 8 |
Correct |
24 ms |
47176 KB |
Output is correct |
| 9 |
Correct |
23 ms |
47244 KB |
Output is correct |
| 10 |
Correct |
22 ms |
47280 KB |
Output is correct |
| 11 |
Correct |
23 ms |
47184 KB |
Output is correct |
| 12 |
Correct |
23 ms |
47264 KB |
Output is correct |
| 13 |
Correct |
21 ms |
47172 KB |
Output is correct |
| 14 |
Correct |
23 ms |
47144 KB |
Output is correct |
| 15 |
Correct |
23 ms |
47184 KB |
Output is correct |
| 16 |
Correct |
24 ms |
47172 KB |
Output is correct |
| 17 |
Correct |
23 ms |
47168 KB |
Output is correct |
| 18 |
Correct |
23 ms |
47236 KB |
Output is correct |
| 19 |
Correct |
22 ms |
47180 KB |
Output is correct |
| 20 |
Correct |
24 ms |
47232 KB |
Output is correct |
| 21 |
Correct |
21 ms |
47172 KB |
Output is correct |
| 22 |
Correct |
23 ms |
47184 KB |
Output is correct |
| 23 |
Correct |
23 ms |
47240 KB |
Output is correct |
| 24 |
Correct |
23 ms |
47232 KB |
Output is correct |
| 25 |
Correct |
24 ms |
47172 KB |
Output is correct |
| 26 |
Correct |
23 ms |
47216 KB |
Output is correct |
| 27 |
Correct |
23 ms |
47208 KB |
Output is correct |
| 28 |
Correct |
25 ms |
47288 KB |
Output is correct |
| 29 |
Correct |
23 ms |
47284 KB |
Output is correct |
| 30 |
Correct |
23 ms |
47172 KB |
Output is correct |
| 31 |
Correct |
23 ms |
47220 KB |
Output is correct |
| 32 |
Correct |
23 ms |
47180 KB |
Output is correct |
| 33 |
Correct |
23 ms |
47284 KB |
Output is correct |
| 34 |
Correct |
23 ms |
47196 KB |
Output is correct |
| 35 |
Correct |
23 ms |
47164 KB |
Output is correct |
| 36 |
Correct |
24 ms |
47276 KB |
Output is correct |
| 37 |
Correct |
24 ms |
47212 KB |
Output is correct |
| 38 |
Correct |
21 ms |
47180 KB |
Output is correct |
| 39 |
Correct |
24 ms |
47160 KB |
Output is correct |
| 40 |
Correct |
23 ms |
47180 KB |
Output is correct |
| 41 |
Correct |
22 ms |
47180 KB |
Output is correct |
| 42 |
Correct |
24 ms |
47272 KB |
Output is correct |
| 43 |
Correct |
23 ms |
47240 KB |
Output is correct |
| 44 |
Correct |
23 ms |
47176 KB |
Output is correct |
| 45 |
Correct |
23 ms |
47180 KB |
Output is correct |
| 46 |
Correct |
22 ms |
47260 KB |
Output is correct |
| 47 |
Correct |
23 ms |
47252 KB |
Output is correct |
| 48 |
Correct |
22 ms |
47244 KB |
Output is correct |
| 49 |
Correct |
23 ms |
47276 KB |
Output is correct |
| 50 |
Correct |
23 ms |
47288 KB |
Output is correct |
| 51 |
Correct |
23 ms |
47172 KB |
Output is correct |
| 52 |
Correct |
23 ms |
47244 KB |
Output is correct |
| 53 |
Correct |
24 ms |
47232 KB |
Output is correct |
| 54 |
Correct |
24 ms |
47284 KB |
Output is correct |
| 55 |
Correct |
23 ms |
47192 KB |
Output is correct |
| 56 |
Correct |
23 ms |
47188 KB |
Output is correct |
| 57 |
Correct |
23 ms |
47208 KB |
Output is correct |
| 58 |
Correct |
23 ms |
47180 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
23 ms |
47216 KB |
Output is correct |
| 2 |
Correct |
23 ms |
47236 KB |
Output is correct |
| 3 |
Correct |
24 ms |
47264 KB |
Output is correct |
| 4 |
Correct |
26 ms |
47260 KB |
Output is correct |
| 5 |
Correct |
26 ms |
47220 KB |
Output is correct |
| 6 |
Correct |
23 ms |
47180 KB |
Output is correct |
| 7 |
Correct |
62 ms |
51448 KB |
Output is correct |
| 8 |
Correct |
63 ms |
51348 KB |
Output is correct |
| 9 |
Correct |
62 ms |
51384 KB |
Output is correct |
| 10 |
Correct |
63 ms |
51348 KB |
Output is correct |
| 11 |
Correct |
64 ms |
51356 KB |
Output is correct |
| 12 |
Correct |
62 ms |
51352 KB |
Output is correct |
| 13 |
Correct |
63 ms |
51444 KB |
Output is correct |
| 14 |
Correct |
77 ms |
51356 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
23 ms |
47180 KB |
Output is correct |
| 2 |
Correct |
23 ms |
47244 KB |
Output is correct |
| 3 |
Correct |
23 ms |
47272 KB |
Output is correct |
| 4 |
Correct |
23 ms |
47196 KB |
Output is correct |
| 5 |
Correct |
23 ms |
47284 KB |
Output is correct |
| 6 |
Correct |
22 ms |
47216 KB |
Output is correct |
| 7 |
Correct |
22 ms |
47276 KB |
Output is correct |
| 8 |
Correct |
24 ms |
47176 KB |
Output is correct |
| 9 |
Correct |
23 ms |
47244 KB |
Output is correct |
| 10 |
Correct |
22 ms |
47280 KB |
Output is correct |
| 11 |
Correct |
23 ms |
47184 KB |
Output is correct |
| 12 |
Correct |
23 ms |
47264 KB |
Output is correct |
| 13 |
Correct |
21 ms |
47172 KB |
Output is correct |
| 14 |
Correct |
23 ms |
47144 KB |
Output is correct |
| 15 |
Correct |
23 ms |
47184 KB |
Output is correct |
| 16 |
Correct |
24 ms |
47172 KB |
Output is correct |
| 17 |
Correct |
23 ms |
47168 KB |
Output is correct |
| 18 |
Correct |
23 ms |
47236 KB |
Output is correct |
| 19 |
Correct |
22 ms |
47180 KB |
Output is correct |
| 20 |
Correct |
24 ms |
47232 KB |
Output is correct |
| 21 |
Correct |
21 ms |
47172 KB |
Output is correct |
| 22 |
Correct |
23 ms |
47184 KB |
Output is correct |
| 23 |
Correct |
23 ms |
47240 KB |
Output is correct |
| 24 |
Correct |
23 ms |
47232 KB |
Output is correct |
| 25 |
Correct |
24 ms |
47172 KB |
Output is correct |
| 26 |
Correct |
23 ms |
47216 KB |
Output is correct |
| 27 |
Correct |
23 ms |
47208 KB |
Output is correct |
| 28 |
Correct |
25 ms |
47288 KB |
Output is correct |
| 29 |
Correct |
23 ms |
47284 KB |
Output is correct |
| 30 |
Correct |
23 ms |
47172 KB |
Output is correct |
| 31 |
Correct |
23 ms |
47220 KB |
Output is correct |
| 32 |
Correct |
23 ms |
47180 KB |
Output is correct |
| 33 |
Correct |
23 ms |
47284 KB |
Output is correct |
| 34 |
Correct |
23 ms |
47196 KB |
Output is correct |
| 35 |
Correct |
23 ms |
47164 KB |
Output is correct |
| 36 |
Correct |
24 ms |
47276 KB |
Output is correct |
| 37 |
Correct |
24 ms |
47212 KB |
Output is correct |
| 38 |
Correct |
21 ms |
47180 KB |
Output is correct |
| 39 |
Correct |
24 ms |
47160 KB |
Output is correct |
| 40 |
Correct |
23 ms |
47180 KB |
Output is correct |
| 41 |
Correct |
22 ms |
47180 KB |
Output is correct |
| 42 |
Correct |
24 ms |
47272 KB |
Output is correct |
| 43 |
Correct |
23 ms |
47240 KB |
Output is correct |
| 44 |
Correct |
23 ms |
47176 KB |
Output is correct |
| 45 |
Correct |
23 ms |
47180 KB |
Output is correct |
| 46 |
Correct |
22 ms |
47260 KB |
Output is correct |
| 47 |
Correct |
23 ms |
47252 KB |
Output is correct |
| 48 |
Correct |
22 ms |
47244 KB |
Output is correct |
| 49 |
Correct |
23 ms |
47276 KB |
Output is correct |
| 50 |
Correct |
23 ms |
47288 KB |
Output is correct |
| 51 |
Correct |
23 ms |
47172 KB |
Output is correct |
| 52 |
Correct |
23 ms |
47244 KB |
Output is correct |
| 53 |
Correct |
24 ms |
47232 KB |
Output is correct |
| 54 |
Correct |
24 ms |
47284 KB |
Output is correct |
| 55 |
Correct |
23 ms |
47192 KB |
Output is correct |
| 56 |
Correct |
23 ms |
47188 KB |
Output is correct |
| 57 |
Correct |
23 ms |
47208 KB |
Output is correct |
| 58 |
Correct |
23 ms |
47180 KB |
Output is correct |
| 59 |
Correct |
23 ms |
47216 KB |
Output is correct |
| 60 |
Correct |
23 ms |
47236 KB |
Output is correct |
| 61 |
Correct |
24 ms |
47264 KB |
Output is correct |
| 62 |
Correct |
26 ms |
47260 KB |
Output is correct |
| 63 |
Correct |
26 ms |
47220 KB |
Output is correct |
| 64 |
Correct |
23 ms |
47180 KB |
Output is correct |
| 65 |
Correct |
62 ms |
51448 KB |
Output is correct |
| 66 |
Correct |
63 ms |
51348 KB |
Output is correct |
| 67 |
Correct |
62 ms |
51384 KB |
Output is correct |
| 68 |
Correct |
63 ms |
51348 KB |
Output is correct |
| 69 |
Correct |
64 ms |
51356 KB |
Output is correct |
| 70 |
Correct |
62 ms |
51352 KB |
Output is correct |
| 71 |
Correct |
63 ms |
51444 KB |
Output is correct |
| 72 |
Correct |
77 ms |
51356 KB |
Output is correct |
| 73 |
Correct |
64 ms |
51336 KB |
Output is correct |
| 74 |
Correct |
64 ms |
51432 KB |
Output is correct |
| 75 |
Correct |
63 ms |
51448 KB |
Output is correct |
| 76 |
Correct |
64 ms |
51400 KB |
Output is correct |
| 77 |
Correct |
63 ms |
51352 KB |
Output is correct |
| 78 |
Correct |
63 ms |
51408 KB |
Output is correct |
| 79 |
Correct |
67 ms |
51468 KB |
Output is correct |
| 80 |
Correct |
63 ms |
51364 KB |
Output is correct |
| 81 |
Correct |
62 ms |
51448 KB |
Output is correct |
| 82 |
Correct |
64 ms |
51476 KB |
Output is correct |
| 83 |
Correct |
71 ms |
51444 KB |
Output is correct |
| 84 |
Correct |
72 ms |
51348 KB |
Output is correct |
| 85 |
Correct |
71 ms |
51348 KB |
Output is correct |
| 86 |
Correct |
71 ms |
51380 KB |
Output is correct |
| 87 |
Correct |
72 ms |
51384 KB |
Output is correct |
| 88 |
Correct |
71 ms |
51348 KB |
Output is correct |
| 89 |
Correct |
71 ms |
51364 KB |
Output is correct |
| 90 |
Correct |
72 ms |
51452 KB |
Output is correct |
| 91 |
Correct |
77 ms |
51356 KB |
Output is correct |
| 92 |
Correct |
79 ms |
51432 KB |
Output is correct |
| 93 |
Correct |
82 ms |
51476 KB |
Output is correct |
| 94 |
Correct |
96 ms |
51352 KB |
Output is correct |
| 95 |
Correct |
106 ms |
51416 KB |
Output is correct |
| 96 |
Correct |
82 ms |
51344 KB |
Output is correct |
| 97 |
Correct |
82 ms |
51344 KB |
Output is correct |
| 98 |
Correct |
86 ms |
51344 KB |
Output is correct |
| 99 |
Correct |
81 ms |
51360 KB |
Output is correct |
| 100 |
Correct |
83 ms |
51348 KB |
Output is correct |
| 101 |
Correct |
83 ms |
51496 KB |
Output is correct |
| 102 |
Correct |
81 ms |
51344 KB |
Output is correct |
