| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 104604 |
2019-04-08T10:41:24 Z |
antimirage |
Lamps (JOI19_lamps) |
C++14 |
|
1000 ms |
21824 KB |
# include <bits/stdc++.h>
using namespace std;
const int N = 1e6 + 5;
int n, dp[N][2], pref[N][2], fl[N];
string a, b;
inline int calc (int l, int r, int type){
if (type == 0)
return pref[r][0] - pref[l - 1][0] + (b[l - 1] == b[l] && b[l] == '0');
return pref[r][1] - pref[l - 1][1] + (b[l - 1] == b[l] && b[l] == '1');
}
main(){
memset( dp, 0x3f3f3f3f, sizeof(dp) );
cin >> n >> a >> b;
a = ' ' + a;
b = ' ' + b;
for (int i = 1; i <= n; i++){
if (a[i] != a[i - 1])
fl[i]++;
fl[i] += fl[i - 1];
if (b[i] != b[i - 1])
pref[i][ b[i] - 48 ] = 1;
pref[i][0] += pref[i - 1][0];
pref[i][1] += pref[i - 1][1];
}
dp[0][0] = 0;
for (int i = 1; i <= n; i++){
if (a[i] == b[i])
dp[i][0] = min( dp[i - 1][1], dp[i - 1][0] );
if (a[i] != b[i])
dp[i][1] = min( dp[i - 1][1], dp[i - 1][0] + 1);
for (int j = i; j >= 1; j--){
dp[i][0] = min( dp[i][0], dp[j - 1][0] + calc( j, i, 1 ) + 1 - ( fl[i] == fl[j] && a[i] == '0') );
dp[i][0] = min( dp[i][0], dp[j - 1][0] + calc( j, i, 0 ) + 1 - ( fl[i] == fl[j] && a[i] == '1') );
dp[i][1] = min( dp[i][1], dp[j - 1][1] + calc( j, i, 0 ) + 1 - ( fl[i] == fl[j] && a[i] == '0') );
dp[i][1] = min( dp[i][1], dp[j - 1][1] + calc( j, i, 1 ) + 1 - ( fl[i] == fl[j] && a[i] == '1') );
dp[i][1] = min( dp[i][1], dp[j - 1][0] + calc( j, i, 0 ) + 2 - ( fl[i] == fl[j] && a[i] == '1') );
dp[i][1] = min( dp[i][1], dp[j - 1][0] + calc( j, i, 1 ) + 2 - ( fl[i] == fl[j] && a[i] == '0') );
}
}
cout << min(dp[n][1], dp[n][0]) << endl;
}
Compilation message
lamp.cpp:18:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
main(){
^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 2 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 3 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 4 |
Correct |
10 ms |
8164 KB |
Output is correct |
| 5 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 6 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 7 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 8 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 9 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 10 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 11 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 12 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 13 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 14 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 15 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 16 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 17 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 18 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 19 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 20 |
Correct |
11 ms |
8192 KB |
Output is correct |
| 21 |
Correct |
12 ms |
8192 KB |
Output is correct |
| 22 |
Correct |
8 ms |
8192 KB |
Output is correct |
| 23 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 24 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 25 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 26 |
Incorrect |
10 ms |
8192 KB |
Output isn't correct |
| 27 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 2 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 3 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 4 |
Correct |
10 ms |
8164 KB |
Output is correct |
| 5 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 6 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 7 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 8 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 9 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 10 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 11 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 12 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 13 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 14 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 15 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 16 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 17 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 18 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 19 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 20 |
Correct |
11 ms |
8192 KB |
Output is correct |
| 21 |
Correct |
12 ms |
8192 KB |
Output is correct |
| 22 |
Correct |
8 ms |
8192 KB |
Output is correct |
| 23 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 24 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 25 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 26 |
Incorrect |
10 ms |
8192 KB |
Output isn't correct |
| 27 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
11 ms |
8192 KB |
Output is correct |
| 2 |
Correct |
11 ms |
8192 KB |
Output is correct |
| 3 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 4 |
Correct |
8 ms |
8192 KB |
Output is correct |
| 5 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 6 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 7 |
Execution timed out |
1068 ms |
21824 KB |
Time limit exceeded |
| 8 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 2 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 3 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 4 |
Correct |
10 ms |
8164 KB |
Output is correct |
| 5 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 6 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 7 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 8 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 9 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 10 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 11 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 12 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 13 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 14 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 15 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 16 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 17 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 18 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 19 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 20 |
Correct |
11 ms |
8192 KB |
Output is correct |
| 21 |
Correct |
12 ms |
8192 KB |
Output is correct |
| 22 |
Correct |
8 ms |
8192 KB |
Output is correct |
| 23 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 24 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 25 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 26 |
Incorrect |
10 ms |
8192 KB |
Output isn't correct |
| 27 |
Halted |
0 ms |
0 KB |
- |
