답안 #1094337

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1094337	2024-09-29T10:54:53 Z	_8_8_	Chorus (JOI23_chorus)	C++17	61 / 100	2465 ms	117708 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(ll pen) {
    for(int i = 1; i <= n; i++) {
        dp[i] = 1e18;
        col[i] = n + 1;
        for(int j = i; j >= 1; j--) {   
            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]};
}
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 = -1e12, r = 1e12, res;
    while(r - l > 1) { 
        ll mid = (l + r) / 2;
        auto [val, t] = calc(mid);
        if(t > k) {
            r = mid;
        } else {
            l = mid;
            res = val + k * 1ll * 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	348 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	0 ms	348 KB	Output is correct
7	Correct	0 ms	344 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	344 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	1 ms	344 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	348 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	0 ms	348 KB	Output is correct
7	Correct	0 ms	344 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	344 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	1 ms	344 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	8 ms	3524 KB	Output is correct
19	Correct	8 ms	3528 KB	Output is correct
20	Correct	8 ms	3420 KB	Output is correct
21	Correct	8 ms	3528 KB	Output is correct
22	Correct	8 ms	3524 KB	Output is correct
23	Correct	7 ms	3416 KB	Output is correct
24	Correct	8 ms	3420 KB	Output is correct
25	Correct	8 ms	3416 KB	Output is correct
26	Correct	8 ms	3420 KB	Output is correct
27	Correct	8 ms	3504 KB	Output is correct
28	Correct	8 ms	3416 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	348 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	0 ms	348 KB	Output is correct
7	Correct	0 ms	344 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	344 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	1 ms	344 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	8 ms	3524 KB	Output is correct
19	Correct	8 ms	3528 KB	Output is correct
20	Correct	8 ms	3420 KB	Output is correct
21	Correct	8 ms	3528 KB	Output is correct
22	Correct	8 ms	3524 KB	Output is correct
23	Correct	7 ms	3416 KB	Output is correct
24	Correct	8 ms	3420 KB	Output is correct
25	Correct	8 ms	3416 KB	Output is correct
26	Correct	8 ms	3420 KB	Output is correct
27	Correct	8 ms	3504 KB	Output is correct
28	Correct	8 ms	3416 KB	Output is correct
29	Correct	2084 ms	114420 KB	Output is correct
30	Correct	2243 ms	117572 KB	Output is correct
31	Correct	2291 ms	117584 KB	Output is correct
32	Correct	2331 ms	117588 KB	Output is correct
33	Correct	2412 ms	117588 KB	Output is correct
34	Correct	2365 ms	117588 KB	Output is correct
35	Correct	2174 ms	117584 KB	Output is correct
36	Correct	2318 ms	117616 KB	Output is correct
37	Correct	2465 ms	117588 KB	Output is correct
38	Correct	2227 ms	117708 KB	Output is correct
39	Correct	2184 ms	117600 KB	Output is correct
40	Correct	2458 ms	117328 KB	Output is correct
41	Correct	2431 ms	117332 KB	Output is correct
42	Correct	2152 ms	117548 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	348 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	0 ms	348 KB	Output is correct
7	Correct	0 ms	344 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	344 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	1 ms	344 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	8 ms	3524 KB	Output is correct
19	Correct	8 ms	3528 KB	Output is correct
20	Correct	8 ms	3420 KB	Output is correct
21	Correct	8 ms	3528 KB	Output is correct
22	Correct	8 ms	3524 KB	Output is correct
23	Correct	7 ms	3416 KB	Output is correct
24	Correct	8 ms	3420 KB	Output is correct
25	Correct	8 ms	3416 KB	Output is correct
26	Correct	8 ms	3420 KB	Output is correct
27	Correct	8 ms	3504 KB	Output is correct
28	Correct	8 ms	3416 KB	Output is correct
29	Correct	2084 ms	114420 KB	Output is correct
30	Correct	2243 ms	117572 KB	Output is correct
31	Correct	2291 ms	117584 KB	Output is correct
32	Correct	2331 ms	117588 KB	Output is correct
33	Correct	2412 ms	117588 KB	Output is correct
34	Correct	2365 ms	117588 KB	Output is correct
35	Correct	2174 ms	117584 KB	Output is correct
36	Correct	2318 ms	117616 KB	Output is correct
37	Correct	2465 ms	117588 KB	Output is correct
38	Correct	2227 ms	117708 KB	Output is correct
39	Correct	2184 ms	117600 KB	Output is correct
40	Correct	2458 ms	117328 KB	Output is correct
41	Correct	2431 ms	117332 KB	Output is correct
42	Correct	2152 ms	117548 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	348 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	0 ms	348 KB	Output is correct
7	Correct	0 ms	344 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	344 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	1 ms	344 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	8 ms	3524 KB	Output is correct
19	Correct	8 ms	3528 KB	Output is correct
20	Correct	8 ms	3420 KB	Output is correct
21	Correct	8 ms	3528 KB	Output is correct
22	Correct	8 ms	3524 KB	Output is correct
23	Correct	7 ms	3416 KB	Output is correct
24	Correct	8 ms	3420 KB	Output is correct
25	Correct	8 ms	3416 KB	Output is correct
26	Correct	8 ms	3420 KB	Output is correct
27	Correct	8 ms	3504 KB	Output is correct
28	Correct	8 ms	3416 KB	Output is correct
29	Correct	2084 ms	114420 KB	Output is correct
30	Correct	2243 ms	117572 KB	Output is correct
31	Correct	2291 ms	117584 KB	Output is correct
32	Correct	2331 ms	117588 KB	Output is correct
33	Correct	2412 ms	117588 KB	Output is correct
34	Correct	2365 ms	117588 KB	Output is correct
35	Correct	2174 ms	117584 KB	Output is correct
36	Correct	2318 ms	117616 KB	Output is correct
37	Correct	2465 ms	117588 KB	Output is correct
38	Correct	2227 ms	117708 KB	Output is correct
39	Correct	2184 ms	117600 KB	Output is correct
40	Correct	2458 ms	117328 KB	Output is correct
41	Correct	2431 ms	117332 KB	Output is correct
42	Correct	2152 ms	117548 KB	Output is correct
43	Runtime error	4 ms	604 KB	Execution killed with signal 11
44	Halted	0 ms	0 KB	-

답안 #1094337

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