답안 #1094339

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1094339	2024-09-29T10:57:03 Z	_8_8_	Chorus (JOI23_chorus)	C++17	61 / 100	2348 ms	117700 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 = -1, r = 1e12, res;
    while(r - l > 1) { 
        ll mid = (l + r) / 2;
        auto [val, t] = calc(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	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	388 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	348 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	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	1 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	388 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	348 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	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	1 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	10 ms	3420 KB	Output is correct
19	Correct	8 ms	3520 KB	Output is correct
20	Correct	8 ms	3420 KB	Output is correct
21	Correct	9 ms	3520 KB	Output is correct
22	Correct	9 ms	3520 KB	Output is correct
23	Correct	7 ms	3420 KB	Output is correct
24	Correct	8 ms	3420 KB	Output is correct
25	Correct	8 ms	3520 KB	Output is correct
26	Correct	8 ms	3420 KB	Output is correct
27	Correct	8 ms	3420 KB	Output is correct
28	Correct	7 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	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	388 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	348 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	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	1 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	10 ms	3420 KB	Output is correct
19	Correct	8 ms	3520 KB	Output is correct
20	Correct	8 ms	3420 KB	Output is correct
21	Correct	9 ms	3520 KB	Output is correct
22	Correct	9 ms	3520 KB	Output is correct
23	Correct	7 ms	3420 KB	Output is correct
24	Correct	8 ms	3420 KB	Output is correct
25	Correct	8 ms	3520 KB	Output is correct
26	Correct	8 ms	3420 KB	Output is correct
27	Correct	8 ms	3420 KB	Output is correct
28	Correct	7 ms	3420 KB	Output is correct
29	Correct	2198 ms	114376 KB	Output is correct
30	Correct	2185 ms	117692 KB	Output is correct
31	Correct	2162 ms	117480 KB	Output is correct
32	Correct	2295 ms	117700 KB	Output is correct
33	Correct	2330 ms	117592 KB	Output is correct
34	Correct	2048 ms	117588 KB	Output is correct
35	Correct	2131 ms	117580 KB	Output is correct
36	Correct	2348 ms	117584 KB	Output is correct
37	Correct	2198 ms	117584 KB	Output is correct
38	Correct	2126 ms	117588 KB	Output is correct
39	Correct	2301 ms	117588 KB	Output is correct
40	Correct	2221 ms	117328 KB	Output is correct
41	Correct	2205 ms	117328 KB	Output is correct
42	Correct	2325 ms	117588 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	388 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	348 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	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	1 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	10 ms	3420 KB	Output is correct
19	Correct	8 ms	3520 KB	Output is correct
20	Correct	8 ms	3420 KB	Output is correct
21	Correct	9 ms	3520 KB	Output is correct
22	Correct	9 ms	3520 KB	Output is correct
23	Correct	7 ms	3420 KB	Output is correct
24	Correct	8 ms	3420 KB	Output is correct
25	Correct	8 ms	3520 KB	Output is correct
26	Correct	8 ms	3420 KB	Output is correct
27	Correct	8 ms	3420 KB	Output is correct
28	Correct	7 ms	3420 KB	Output is correct
29	Correct	2198 ms	114376 KB	Output is correct
30	Correct	2185 ms	117692 KB	Output is correct
31	Correct	2162 ms	117480 KB	Output is correct
32	Correct	2295 ms	117700 KB	Output is correct
33	Correct	2330 ms	117592 KB	Output is correct
34	Correct	2048 ms	117588 KB	Output is correct
35	Correct	2131 ms	117580 KB	Output is correct
36	Correct	2348 ms	117584 KB	Output is correct
37	Correct	2198 ms	117584 KB	Output is correct
38	Correct	2126 ms	117588 KB	Output is correct
39	Correct	2301 ms	117588 KB	Output is correct
40	Correct	2221 ms	117328 KB	Output is correct
41	Correct	2205 ms	117328 KB	Output is correct
42	Correct	2325 ms	117588 KB	Output is correct
43	Runtime error	3 ms	600 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	388 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	348 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	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	1 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	10 ms	3420 KB	Output is correct
19	Correct	8 ms	3520 KB	Output is correct
20	Correct	8 ms	3420 KB	Output is correct
21	Correct	9 ms	3520 KB	Output is correct
22	Correct	9 ms	3520 KB	Output is correct
23	Correct	7 ms	3420 KB	Output is correct
24	Correct	8 ms	3420 KB	Output is correct
25	Correct	8 ms	3520 KB	Output is correct
26	Correct	8 ms	3420 KB	Output is correct
27	Correct	8 ms	3420 KB	Output is correct
28	Correct	7 ms	3420 KB	Output is correct
29	Correct	2198 ms	114376 KB	Output is correct
30	Correct	2185 ms	117692 KB	Output is correct
31	Correct	2162 ms	117480 KB	Output is correct
32	Correct	2295 ms	117700 KB	Output is correct
33	Correct	2330 ms	117592 KB	Output is correct
34	Correct	2048 ms	117588 KB	Output is correct
35	Correct	2131 ms	117580 KB	Output is correct
36	Correct	2348 ms	117584 KB	Output is correct
37	Correct	2198 ms	117584 KB	Output is correct
38	Correct	2126 ms	117588 KB	Output is correct
39	Correct	2301 ms	117588 KB	Output is correct
40	Correct	2221 ms	117328 KB	Output is correct
41	Correct	2205 ms	117328 KB	Output is correct
42	Correct	2325 ms	117588 KB	Output is correct
43	Runtime error	3 ms	600 KB	Execution killed with signal 11
44	Halted	0 ms	0 KB	-

답안 #1094339

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