oj.uz

Submission #1013844

# Submission time Handle Problem Language Result Execution time Memory
1013844 2024-07-04T06:50:48 Z toan2602 Lamps (JOI19_lamps) C++14
4 / 100
 14 ms 19976 KB 
#include<bits/stdc++.h>

using namespace std;

int n, dp[1000005], p0[1000005], p1[1000005], dif[1000005];
string a, b;
void solve() {
    cin >> n >> a >> b;
    a = ' ' + a;
    b = ' ' + b;
    a[0] = '#';
    b[0] = '&';
    int cnt =0, res = 0;
    for (int i = 1; i < b.size(); i++) {
        if(b[i] == '0') p0[i] = (b[i-1] == '0' ? p0[i-1] + 1 : 1);
        else p1[i] = (b[i-1] == '1' ? p1[i-1] + 1 : 1);
        if(a[i] != b[i]) dif[i] = (a[i-1] != b[i-1] ? dif[i-1] : i-1);
    }
    for (int i = 1; i < a.size(); i++) {
        if(a[i] == b[i]) dp[i] = dp[i-1];
        else dp[i] = min(dp[dif[i]] + 1, dp[i-1]+1);
        if(b[i] == '0') dp[i] = min(dp[i-p0[i]] + 1, dp[i]);
        else dp[i] = min(dp[i-p1[i]]+1, dp[i]);
    }
    cout << dp[n];
}

signed main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int t = 1;
    // cin >> t;
    while(t--) {
        solve();
    }
}

Compilation message

lamp.cpp: In function 'void solve()':
lamp.cpp:14:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |     for (int i = 1; i < b.size(); i++) {
      |                     ~~^~~~~~~~~~
lamp.cpp:19:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |     for (int i = 1; i < a.size(); i++) {
      |                     ~~^~~~~~~~~~
lamp.cpp:13:9: warning: unused variable 'cnt' [-Wunused-variable]
   13 |     int cnt =0, res = 0;
      |         ^~~
lamp.cpp:13:17: warning: unused variable 'res' [-Wunused-variable]
   13 |     int cnt =0, res = 0;
      |                 ^~~

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 464 KB Output is correct
4 Correct 0 ms 464 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 460 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 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 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 464 KB Output is correct
4 Correct 0 ms 464 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 460 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 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 464 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 464 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 10 ms 11984 KB Output is correct
8 Correct 13 ms 19904 KB Output is correct
9 Correct 13 ms 19780 KB Output is correct
10 Correct 14 ms 19960 KB Output is correct
11 Correct 12 ms 19976 KB Output is correct
12 Correct 12 ms 15872 KB Output is correct
13 Correct 11 ms 15364 KB Output is correct
14 Correct 14 ms 19968 KB Output is correct

Subtask #4
0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 464 KB Output is correct
4 Correct 0 ms 464 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 460 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Incorrect 0 ms 348 KB Output isn't correct
14 Halted 0 ms 0 KB -