oj.uz

Submission #683895

# Submission time Handle Problem Language Result Execution time Memory
683895 2023-01-19T15:01:02 Z alvingogo Monochrome Points (JOI20_monochrome) C++14
0 / 100
 1 ms 324 KB 
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#define AquA cin.tie(0);ios_base::sync_with_stdio(0);
#define fs first
#define sc second
#define p_q priority_queue
#define int long long
using namespace std;

signed main(){
    AquA;
    int n;
    cin >> n;
    string s;
    cin >> s;
    int ans=1e14;
    vector<int> a,b;
    int pre=0,mx=0,k=0;
    for(int i=0;i<n;i++){
        if(s[i]=='B'){
            a.push_back(i);
            pre++;
        }
        if(s[i+n]=='W'){
            b.push_back(i);
            pre--;
        }
        if(pre<mx){
            mx=pre;
            k=i+1;
        }
    }
    int g=a.size();
    for(int i=0;i<g;i++){
        int xx=0;
        for(int j=0;j<g;j++){
            xx+=min(abs(b[j]-a[(i+j)%g]),n-abs(b[j]-a[(i+j)%g]));
        }
        ans=min(ans,xx);
    }
        
    cout << n*(n-1)/2-ans << "\n";
    return 0;
}

Compilation message

monochrome.cpp: In function 'int main()':
monochrome.cpp:18:20: warning: variable 'k' set but not used [-Wunused-but-set-variable]
   18 |     int pre=0,mx=0,k=0;
      |                    ^

Subtask #1
0.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 320 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 324 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 0 ms 320 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Incorrect 1 ms 212 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #2
0.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 320 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 324 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 0 ms 320 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Incorrect 1 ms 212 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #3
0.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 320 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 324 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 0 ms 320 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Incorrect 1 ms 212 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #4
0.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 320 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 324 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 0 ms 320 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Incorrect 1 ms 212 KB Output isn't correct
13 Halted 0 ms 0 KB -