답안 #1094346

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1094346	2024-09-29T11:08:43 Z	_8_8_	Chorus (JOI23_chorus)	C++17	61 / 100	2506 ms	117704 KB

chorus

#include <bits/stdc++.h>
    
using namespace std;
    
typedef long long ll;
const int  N = 5e3 + 12, MOD = (int)1e9 + 7;

int n, k, x[N], y[N], pref[ 2 * N], col[N], opt[N];
ll dp[N], c[N][N];
void prec() {
    for(int i = 1; i <= n; i++) {
        for(int j = i; j >= 1; j--) {
            c[j][i] = c[j + 1][i];
            if(y[j] <= x[i]) {
                c[j][i] += pref[x[i]] - pref[y[j] - 1];;
            }
        }
    }
    for(int i = 1; i < n; i++) {
        for(int j = 1; j < n; j++) {
            assert(c[i][j + 1] + c[i + 1][j] >= c[i][j] + c[i + 1][j + 1]);
        }
    }
}
pair<ll, ll> calc_slow(ll pen) {
    for(int i = 1; i <= n; i++) {
        dp[i] = 1e18;
        col[i] = n + 1;
        for(int j = i; j >= 1; j--) {   
            if(pref[y[j]] > pref[x[i]] && i != n) continue;
            if(dp[j - 1] + c[j][i] + pen <= dp[i]) {
                dp[i] = dp[j - 1] + c[j][i] + pen;
                col[i] = col[j - 1] + 1;
                opt[i] = j;
            }
        }
    }
    return {dp[n], col[n]};
}
// pair<ll, ll> calc(ll pen) {
//     for(int i = 1; i <= n; i++) {

//     }
// }
void test() {
    cin >> n >> k;
    int _x = 0, _y = 0;
    for(int i = 1; i <= n + n; i++) {
        char a;
        cin >> a;
        pref[i] = pref[i - 1];
        if(a == 'A') {
            x[++_x] = i;
            pref[i]++;
        } else { 
            y[++_y] = i;
        }
    }
    prec();
    ll l = -1, r = 1e12, res;
    while(r - l > 1) { 
        ll mid = (l + r) / 2;
        auto [val, t] = calc_slow(mid);
        if(t <= k) {
            r = mid;
            res = val - k * 1ll * mid;
        } else {
            l = mid;
        }
    }
    cout << res << '\n';
}
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0); 
    
    int t = 1; 
    // cin >> t;
    
    while(t--) 
        test();
    return 0;
}

Subtask #1
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	460 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	1 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	1 ms	460 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	344 KB	Output is correct
13	Correct	0 ms	344 KB	Output is correct
14	Correct	0 ms	464 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	460 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	1 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	1 ms	460 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	344 KB	Output is correct
13	Correct	0 ms	344 KB	Output is correct
14	Correct	0 ms	464 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	2 ms	1116 KB	Output is correct
18	Correct	15 ms	3524 KB	Output is correct
19	Correct	11 ms	3416 KB	Output is correct
20	Correct	10 ms	3420 KB	Output is correct
21	Correct	11 ms	3520 KB	Output is correct
22	Correct	10 ms	3416 KB	Output is correct
23	Correct	9 ms	3528 KB	Output is correct
24	Correct	10 ms	3528 KB	Output is correct
25	Correct	9 ms	3436 KB	Output is correct
26	Correct	9 ms	3328 KB	Output is correct
27	Correct	10 ms	3496 KB	Output is correct
28	Correct	10 ms	3420 KB	Output is correct

Subtask #3
21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	460 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	1 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	1 ms	460 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	344 KB	Output is correct
13	Correct	0 ms	344 KB	Output is correct
14	Correct	0 ms	464 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	2 ms	1116 KB	Output is correct
18	Correct	15 ms	3524 KB	Output is correct
19	Correct	11 ms	3416 KB	Output is correct
20	Correct	10 ms	3420 KB	Output is correct
21	Correct	11 ms	3520 KB	Output is correct
22	Correct	10 ms	3416 KB	Output is correct
23	Correct	9 ms	3528 KB	Output is correct
24	Correct	10 ms	3528 KB	Output is correct
25	Correct	9 ms	3436 KB	Output is correct
26	Correct	9 ms	3328 KB	Output is correct
27	Correct	10 ms	3496 KB	Output is correct
28	Correct	10 ms	3420 KB	Output is correct
29	Correct	2340 ms	114256 KB	Output is correct
30	Correct	2360 ms	117704 KB	Output is correct
31	Correct	2396 ms	117584 KB	Output is correct
32	Correct	2417 ms	117584 KB	Output is correct
33	Correct	2451 ms	117584 KB	Output is correct
34	Correct	2506 ms	117492 KB	Output is correct
35	Correct	2354 ms	117548 KB	Output is correct
36	Correct	2412 ms	117584 KB	Output is correct
37	Correct	2407 ms	117592 KB	Output is correct
38	Correct	2348 ms	117704 KB	Output is correct
39	Correct	2480 ms	117672 KB	Output is correct
40	Correct	2504 ms	117332 KB	Output is correct
41	Correct	2327 ms	117588 KB	Output is correct
42	Correct	1242 ms	117584 KB	Output is correct

Subtask #4
0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	460 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	1 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	1 ms	460 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	344 KB	Output is correct
13	Correct	0 ms	344 KB	Output is correct
14	Correct	0 ms	464 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	2 ms	1116 KB	Output is correct
18	Correct	15 ms	3524 KB	Output is correct
19	Correct	11 ms	3416 KB	Output is correct
20	Correct	10 ms	3420 KB	Output is correct
21	Correct	11 ms	3520 KB	Output is correct
22	Correct	10 ms	3416 KB	Output is correct
23	Correct	9 ms	3528 KB	Output is correct
24	Correct	10 ms	3528 KB	Output is correct
25	Correct	9 ms	3436 KB	Output is correct
26	Correct	9 ms	3328 KB	Output is correct
27	Correct	10 ms	3496 KB	Output is correct
28	Correct	10 ms	3420 KB	Output is correct
29	Correct	2340 ms	114256 KB	Output is correct
30	Correct	2360 ms	117704 KB	Output is correct
31	Correct	2396 ms	117584 KB	Output is correct
32	Correct	2417 ms	117584 KB	Output is correct
33	Correct	2451 ms	117584 KB	Output is correct
34	Correct	2506 ms	117492 KB	Output is correct
35	Correct	2354 ms	117548 KB	Output is correct
36	Correct	2412 ms	117584 KB	Output is correct
37	Correct	2407 ms	117592 KB	Output is correct
38	Correct	2348 ms	117704 KB	Output is correct
39	Correct	2480 ms	117672 KB	Output is correct
40	Correct	2504 ms	117332 KB	Output is correct
41	Correct	2327 ms	117588 KB	Output is correct
42	Correct	1242 ms	117584 KB	Output is correct
43	Runtime error	4 ms	604 KB	Execution killed with signal 11
44	Halted	0 ms	0 KB	-

Subtask #5
0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	460 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	1 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	1 ms	460 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	344 KB	Output is correct
13	Correct	0 ms	344 KB	Output is correct
14	Correct	0 ms	464 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	2 ms	1116 KB	Output is correct
18	Correct	15 ms	3524 KB	Output is correct
19	Correct	11 ms	3416 KB	Output is correct
20	Correct	10 ms	3420 KB	Output is correct
21	Correct	11 ms	3520 KB	Output is correct
22	Correct	10 ms	3416 KB	Output is correct
23	Correct	9 ms	3528 KB	Output is correct
24	Correct	10 ms	3528 KB	Output is correct
25	Correct	9 ms	3436 KB	Output is correct
26	Correct	9 ms	3328 KB	Output is correct
27	Correct	10 ms	3496 KB	Output is correct
28	Correct	10 ms	3420 KB	Output is correct
29	Correct	2340 ms	114256 KB	Output is correct
30	Correct	2360 ms	117704 KB	Output is correct
31	Correct	2396 ms	117584 KB	Output is correct
32	Correct	2417 ms	117584 KB	Output is correct
33	Correct	2451 ms	117584 KB	Output is correct
34	Correct	2506 ms	117492 KB	Output is correct
35	Correct	2354 ms	117548 KB	Output is correct
36	Correct	2412 ms	117584 KB	Output is correct
37	Correct	2407 ms	117592 KB	Output is correct
38	Correct	2348 ms	117704 KB	Output is correct
39	Correct	2480 ms	117672 KB	Output is correct
40	Correct	2504 ms	117332 KB	Output is correct
41	Correct	2327 ms	117588 KB	Output is correct
42	Correct	1242 ms	117584 KB	Output is correct
43	Runtime error	4 ms	604 KB	Execution killed with signal 11
44	Halted	0 ms	0 KB	-

답안 #1094346

Compilation message

Subtask #1 16.0 / 16.0

Subtask #2 24.0 / 24.0

Subtask #3 21.0 / 21.0

Subtask #4 0 / 26.0

Subtask #5 0 / 13.0

Subtask #1
16.0 / 16.0

Subtask #2
24.0 / 24.0

Subtask #3
21.0 / 21.0

Subtask #4
0 / 26.0

Subtask #5
0 / 13.0