Submission #105167

# Submission time Handle Problem Language Result Execution time Memory
105167 2019-04-10T19:40:10 Z reality Lamps (JOI19_lamps) C++17
4 / 100
125 ms 18040 KB
#include "bits/stdc++.h"
using namespace std;
#define fi first
#define se second
#define ll long long
#define dbg(v) cerr<<#v<<" = "<<v<<'\n'
#define vi vector<int>
#define vl vector <ll>
#define pii pair<int,int>
#define vii vector < pii >
#define mp make_pair
#define db long double
#define pb push_back
#define all(s) s.begin(),s.end()
template < class P , class Q > ostream& operator<<(ostream& stream, pair < P , Q > v){ stream << "(" << v.fi << ',' << v.se << ")"; return stream;}
template < class T > ostream& operator<<(ostream& stream, const vector<T> v){ stream << "[ "; for (int i=0; i<(int)v.size(); i++) stream << v[i] << " "; stream << "]"; return stream;}
template < class T > T smin(T &a,T b) {if (a > b) a = b;return a;}
template < class T > T smax(T &a,T b) {if (a < b) a = b;return a;}
const int N = 1e6 + 5;
const int oo = 1e9;
char A[N];
char B[N];
int dp[N][2];
int d1[N],d2[N];
int main(void) {
    int n;
    cin>>n;
    cin>>(A+1)>>(B+1);
    dp[0][0] = 0;
    dp[0][1] = 1;
    for (int i = 1;i <= n;++i)
    	dp[i][0] = dp[i][1] = oo;
    for (int i = 1;i <= n;++i) {
    	d1[i] = B[i] == '1' ? d1[i - 1] : i;
    	d2[i] = B[i] == '0' ? d2[i - 1] : i;
    }
    for (int i = 1;i <= n;++i) {
    	smin(dp[i][0],min(dp[i - 1][0],dp[i - 1][1]) + (A[i] != B[i]));
    	smin(dp[i][1],min(dp[i - 1][0] + 1,dp[i - 1][1]) + (A[i] == B[i]));
    	int Ind = B[i] == '1' ? d1[i] - 1 : d2[i] - 1;
 		smin(dp[i][0],min(dp[Ind][0],dp[Ind][1]) + 1);
    	smin(dp[i][1],min(dp[Ind][0] + 1,dp[Ind][1]) + 1);
    }
    cout << min(dp[n][0],dp[n][1]) << '\n';
    return 0;
}
# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 3 ms 384 KB Output is correct
17 Correct 2 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Incorrect 2 ms 384 KB Output isn't correct
20 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 3 ms 384 KB Output is correct
17 Correct 2 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Incorrect 2 ms 384 KB Output isn't correct
20 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 125 ms 17884 KB Output is correct
8 Correct 96 ms 17948 KB Output is correct
9 Correct 80 ms 18040 KB Output is correct
10 Correct 80 ms 17912 KB Output is correct
11 Correct 105 ms 17912 KB Output is correct
12 Correct 85 ms 17912 KB Output is correct
13 Correct 98 ms 17912 KB Output is correct
14 Correct 84 ms 17912 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 3 ms 384 KB Output is correct
17 Correct 2 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Incorrect 2 ms 384 KB Output isn't correct
20 Halted 0 ms 0 KB -