Submission #623042

# Submission time Handle Problem Language Result Execution time Memory
623042 2022-08-05T06:21:44 Z S2speed Monochrome Points (JOI20_monochrome) C++17
25 / 100
2000 ms 356 KB
#include<bits/stdc++.h>

using namespace std;

#pragma GCC optimize ("Ofast")

typedef long long ll;
typedef pair<ll , ll> pll;

const ll maxn = 2e5 + 17;

string s;
vector<ll> a , b;
vector<pll> u;

int main(){
	ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);

	ll n;
	cin>>n>>s;
    for(ll i = 0 ; i < (n << 1) ; i++){
		if(s[i] == 'B'){
			a.push_back(i);
		} else {
			b.push_back(i);
		}
	}
	ll res = 0;
	for(ll k = 0 ; k < n ; k++){
		u.clear();
		for(ll i = 0 ; i < n ; i++){
			u.push_back({a[i] , b[(i + k) % n]});
			if(u.back().first > u.back().second){
				swap(u.back().first , u.back().second);
			}
		}
		ll cur = 0;
		for(ll i = 0 ; i < n ; i++){
			for(ll j = i + 1 ; j < n ; j++){
				bool c = (u[i].first > u[j].first) , d = (u[i].second > u[j].second);
				if(c ^ d) continue;
				if(c){
					cur += (u[i].first < u[j].second);
				} else {
					cur += (u[j].first < u[i].second);
				}
			}
		}
		res = max(res , cur);
	}
	cout<<res<<'\n';
	return 0;
}
# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 23 ms 340 KB Output is correct
15 Correct 23 ms 340 KB Output is correct
16 Correct 20 ms 352 KB Output is correct
17 Correct 20 ms 348 KB Output is correct
18 Correct 14 ms 340 KB Output is correct
19 Correct 25 ms 344 KB Output is correct
20 Correct 16 ms 340 KB Output is correct
21 Correct 20 ms 356 KB Output is correct
22 Correct 21 ms 340 KB Output is correct
23 Correct 6 ms 340 KB Output is correct
24 Correct 13 ms 344 KB Output is correct
25 Correct 14 ms 320 KB Output is correct
26 Correct 14 ms 356 KB Output is correct
27 Correct 16 ms 348 KB Output is correct
28 Correct 18 ms 352 KB Output is correct
29 Correct 14 ms 340 KB Output is correct
30 Correct 21 ms 340 KB Output is correct
31 Correct 18 ms 340 KB Output is correct
32 Correct 18 ms 340 KB Output is correct
33 Correct 20 ms 352 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 23 ms 340 KB Output is correct
15 Correct 23 ms 340 KB Output is correct
16 Correct 20 ms 352 KB Output is correct
17 Correct 20 ms 348 KB Output is correct
18 Correct 14 ms 340 KB Output is correct
19 Correct 25 ms 344 KB Output is correct
20 Correct 16 ms 340 KB Output is correct
21 Correct 20 ms 356 KB Output is correct
22 Correct 21 ms 340 KB Output is correct
23 Correct 6 ms 340 KB Output is correct
24 Correct 13 ms 344 KB Output is correct
25 Correct 14 ms 320 KB Output is correct
26 Correct 14 ms 356 KB Output is correct
27 Correct 16 ms 348 KB Output is correct
28 Correct 18 ms 352 KB Output is correct
29 Correct 14 ms 340 KB Output is correct
30 Correct 21 ms 340 KB Output is correct
31 Correct 18 ms 340 KB Output is correct
32 Correct 18 ms 340 KB Output is correct
33 Correct 20 ms 352 KB Output is correct
34 Execution timed out 2075 ms 340 KB Time limit exceeded
35 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 23 ms 340 KB Output is correct
15 Correct 23 ms 340 KB Output is correct
16 Correct 20 ms 352 KB Output is correct
17 Correct 20 ms 348 KB Output is correct
18 Correct 14 ms 340 KB Output is correct
19 Correct 25 ms 344 KB Output is correct
20 Correct 16 ms 340 KB Output is correct
21 Correct 20 ms 356 KB Output is correct
22 Correct 21 ms 340 KB Output is correct
23 Correct 6 ms 340 KB Output is correct
24 Correct 13 ms 344 KB Output is correct
25 Correct 14 ms 320 KB Output is correct
26 Correct 14 ms 356 KB Output is correct
27 Correct 16 ms 348 KB Output is correct
28 Correct 18 ms 352 KB Output is correct
29 Correct 14 ms 340 KB Output is correct
30 Correct 21 ms 340 KB Output is correct
31 Correct 18 ms 340 KB Output is correct
32 Correct 18 ms 340 KB Output is correct
33 Correct 20 ms 352 KB Output is correct
34 Execution timed out 2075 ms 340 KB Time limit exceeded
35 Halted 0 ms 0 KB -