Submission #628368

#	Time	Username	Problem	Language	Result	Execution time	Memory
628368		MohamedFaresNebili	Monochrome Points (JOI20_monochrome)	C++14	0 / 100	1 ms	256 KiB

monochrome

#include <bits/stdc++.h>

            using namespace std;

            using ll = long long;
            using ld = long double;
            using pi = pair<pair<int, int>, pair<int, int>>;

            #define ff first
            #define ss second
            #define pb push_back
            #define all(x) (x).begin(), (x).end()
            #define lb lower_bound
            #define int ll

            int N, P[305];
            vector<int> A, B;
            string S;

            int32_t main() {
                ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
                cin >> N >> S; N *= 2; int res = 0;
                for(int l = 0; l < N; l++) P[l] = l;
                for(int l = 0; l < N / 2; l++) {
                    for(int i = N / 2; i < N; i++) {
                        if(S[l] == S[i] || P[i] != i) continue;
                        for(int j = l; j <= i; j++) {
                            res += (P[j] > i || P[j] < l);
                        }
                        P[l] = i, P[i] = l; break;
                    }
                }
                cout << res << "\n";
                return 0;
            }

• Subtask 1: 0 / 4
• Subtask 2: 0 / 21
• Subtask 3: 0 / 10
• Subtask 4: 0 / 65