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답안 #716382

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
716382 2023-03-29T22:27:44 Z Kahou Growing Vegetable is Fun 3 (JOI19_ho_t3) C++14
15 / 100
 500 ms 1048576 KB 
/* In the name of God, aka Allah */
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("avx2")
#include<bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define endl '\n'
#define mk make_pair
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int N = 405;
int n, dp[N][N][N][3];
string s;
vector<int> vc[3];
vector<pii> vt[3];

void solve() {
        cin >> n;
        cin >> s;
        s = '.'+s;
        for (int i = 1; i <= n; i++) {
                int c = (s[i] != 'R') + (s[i] == 'Y');
                vc[c].push_back(i);
        }
        int a, b, c;
        b = 0, c = 0;
        for (int A = 0; A < (int)vc[0].size(); A++) {
                while (b < (int)vc[1].size() && vc[1][b] < vc[0][A]) b++;
                while (c < (int)vc[2].size() && vc[2][b] < vc[0][A]) c++;
                vt[0].push_back({b, c});
        }
        a = 0, c = 0;
        for (int B = 0; B < (int)vc[1].size(); B++) {
                while (a < (int)vc[0].size() && vc[0][a] < vc[1][B]) a++;
                while (c < (int)vc[2].size() && vc[2][c] < vc[1][B]) c++;
                vt[1].push_back({a, c});
        }
        a = 0, b = 0;
        for (int C = 0; C < (int)vc[2].size(); C++) {
                while (a < (int)vc[0].size() && vc[0][a] < vc[2][C]) a++;
                while (b < (int)vc[1].size() && vc[1][b] < vc[2][C]) b++;
                vt[1].push_back({a, b});
        }
        memset(dp, 64, sizeof dp);
        dp[0][0][0][0] = dp[0][0][0][1] = dp[0][0][0][2] = 0;
        for (int sum = 0; sum <= n; sum++) {
                for (int A = 0; A <= sum; A++) {
                        for (int B = 0; A+B <= sum; B++) {
                                int C = sum-A-B;
                                if (A < (int)vc[0].size()) {
                                        int b = vt[0][A].F;
                                        int c = vt[0][A].S;
                                        dp[A+1][B][C][0] = min(dp[A+1][B][C][0], min(dp[A][B][C][1], dp[A][B][C][2]) + vc[0][A]+max(B-b, 0)+max(C-c, 0)-(A+B+C+1));
                                }
                                if (B < (int)vc[1].size()) {
                                        int a = vt[1][B].F;
                                        int c = vt[1][B].S;
                                        dp[A][B+1][C][1] = min(dp[A][B+1][C][1], min(dp[A][B][C][0], dp[A][B][C][2]) + vc[1][B]+max(A-a, 0)+max(C-c, 0)-(A+B+C+1));
                                }
                                if (C < (int)vc[2].size()) {
                                        int a = vt[2][C].F;
                                        int b = vt[2][C].S;
                                        dp[A][B][C+1][2] = min(dp[A][B][C+1][2], min(dp[A][B][C][0], dp[A][B][C][1]) + vc[2][C]+max(A-a,0)+max(B-b, 0)-(A+B+C+1));
                                }
                        }
                }
        }
        int ans = 1e9;
        ans = min(dp[vc[0].size()][vc[1].size()][vc[2].size()][0], ans);
        ans = min(dp[vc[0].size()][vc[1].size()][vc[2].size()][1], ans);
        ans = min(dp[vc[0].size()][vc[1].size()][vc[2].size()][2], ans);
        cout << (ans >= 1e9? -1 : ans) << endl;
}

int main() {
        ios::sync_with_stdio(0), cin.tie(0);
        solve();
        return 0;
}

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 278 ms 780220 KB Output is correct
2 Execution timed out 736 ms 1048576 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #2
0 / 55.0

# 결과 실행 시간 메모리 Grader output
1 Correct 278 ms 780220 KB Output is correct
2 Execution timed out 736 ms 1048576 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 295 ms 780284 KB Output is correct
2 Correct 489 ms 780432 KB Output is correct
3 Correct 459 ms 780304 KB Output is correct
4 Correct 447 ms 780344 KB Output is correct
5 Correct 458 ms 780424 KB Output is correct
6 Correct 454 ms 780312 KB Output is correct
7 Correct 465 ms 780392 KB Output is correct
8 Correct 482 ms 780228 KB Output is correct
9 Correct 430 ms 780304 KB Output is correct
10 Correct 456 ms 780312 KB Output is correct
11 Correct 459 ms 780232 KB Output is correct
12 Correct 298 ms 780352 KB Output is correct
13 Correct 324 ms 780236 KB Output is correct
14 Correct 373 ms 780324 KB Output is correct
15 Correct 459 ms 780308 KB Output is correct
16 Correct 461 ms 780308 KB Output is correct

Subtask #4
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 278 ms 780220 KB Output is correct
2 Execution timed out 736 ms 1048576 KB Time limit exceeded
3 Halted 0 ms 0 KB -