oj.uz

Submission #1014333

# Submission time Handle Problem Language Result Execution time Memory
1014333 2024-07-04T16:50:08 Z anHiep Lamps (JOI19_lamps) C++14
4 / 100
 74 ms 68068 KB 
#include<bits/stdc++.h>
#ifdef LOCAL
#include "D:\debug.h"
#else
#define cebug(...) "Orz_chUoNgnn_khanhtb"
#endif

using namespace std;

#define int long long
#define fi first 
#define se second
#define pb push_back
#define ll long long
#define ii pair<int, int>
#define vi vector<int> 
#define vll vector<ll>
#define vii vector<ii>
#define cd complex<double>
const ll mod = 1e9 + 7;
const ll INF = 1e18L + 5;
const double PI = acos(-1);
const int block = 320;
const int N = 1e6;
int tc, tt = 1;

int n;
string a, b;
int dp[N + 5][4][2];
bool ck(int i, int t) {
    if(a[i] == b[i] && t == 0) return true;
    if(b[i] == '0' && t == 1) return true;
    if(b[i] == '1' && t == 2) return true;
    if(a[i] != b[i] && t == 3) return true;
    return false;
}
void solve() {
    cin>>n>>a>>b;
    for(int i=0; i<=n; i++)
        for(int j=0; j<4; j++)
            for(int k=0; k<2; k++)
                dp[i][j][k] = 1e9;
    a = ']' + a;
    b = '[' + b;
    dp[0][0][0] = 0;
    for(int i=1; i<=n; i++)
        for(int j=0; j<4; j++)
            for(int k=0; k<2; k++) if(ck(i, j)){
                dp[i][j][k] = dp[i - 1][j][k];
                dp[i][j][k] = min(dp[i][j][k], dp[i - 1][j][1 ^ k] + 1);
                for(int h=0; h<4; h++)
                    if(h != j) {
                        dp[i][j][k] = min(dp[i][j][k], dp[i - 1][h][k] + (j != 0));
                        dp[i][j][k] = min(dp[i][j][k], dp[i - 1][h][1 ^ k] + (j != 0) + 1);
                    }
            }
    int ans = 1e9;
    for(int i=0; i<4; i++) {
        ans = min(ans, dp[n][i][0]);
        ans = min(ans, dp[n][i][1] + 1);
    }
    cout<<ans;
}
signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    // freopen(".INP", "r", stdin);
    // freopen(".OUT", "w", stdout);
    for(int tc=1; tc<=tt; tc++) solve();
    cerr<<"\nTime elapsed: "<<1000.0*clock()/CLOCKS_PER_SEC<<" ms.\n";
    return 0;
}

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Incorrect 0 ms 348 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #2
0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Incorrect 0 ms 348 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 460 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 74 ms 67328 KB Output is correct
8 Correct 68 ms 67276 KB Output is correct
9 Correct 68 ms 67284 KB Output is correct
10 Correct 70 ms 67292 KB Output is correct
11 Correct 72 ms 68068 KB Output is correct
12 Correct 66 ms 67276 KB Output is correct
13 Correct 69 ms 67272 KB Output is correct
14 Correct 71 ms 67284 KB Output is correct

Subtask #4
0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Incorrect 0 ms 348 KB Output isn't correct
14 Halted 0 ms 0 KB -