oj.uz

Submission #788145

# Submission time Handle Problem Language Result Execution time Memory
788145 2023-07-19T20:16:58 Z MilosMilutinovic Constellation 3 (JOI20_constellation3) C++14
100 / 100
 578 ms 72268 KB 
/* https://oj.uz/submission/286391 */
#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int N = 2e5 + 10;
const int L = 20;
int n, m, a[N], x[N], y[N], c[N];
int logs[N], dfn[N], dfo[N], T, ls[N], rs[N];
pair<int, int> mx[N][L];
vector<int> ids[N];
ll dp[N];
pair<int, int> qmax(int l, int r) {
    int k = logs[r - l + 1];
    return max(mx[l][k], mx[r - (1 << k) + 1][k]);
}
void buildSparse() {
    for (int i = 2; i <= n; i++) {
        logs[i] = logs[i >> 1] + 1;
    }
    for (int i = 1; i <= n; i++) {
        mx[i][0] = make_pair(a[i], i);
    }
    for (int j = 1; j < L; j++) {
        for (int i = 1; i + (1 << j) <= n + 1; i++) {
            mx[i][j] = max(mx[i][j - 1], mx[i + (1 << (j - 1))][j - 1]);
        }
    }
}
void dfs(int &v, int tl, int tr) {
    if (tl + 1 >= tr) {
        v = 0;
        return;
    }
    v = qmax(tl + 1, tr - 1).second;
    dfs(ls[v], tl, v);
    dfs(rs[v], v, tr);
}
const int M = 8 * N;
ll sum[M];
void modify(int v, int tl, int tr, int ql, int qr, ll x) {
    if (tl > tr || tl > qr || tr < ql) {
        return;
    }
    if (ql <= tl && tr <= qr) {
        sum[v] += x;
        return;
    }
    int mid = tl + tr >> 1;
    modify(v * 2, tl, mid, ql, qr, x);
    modify(v * 2 + 1, mid + 1, tr, ql, qr, x);
}
ll query(int v, int tl, int tr, int qi) {
    if (tl == tr) {
        return sum[v];
    }
    int mid = tl + tr >> 1;
    if (qi <= mid) {
        return query(v * 2, tl, mid, qi) + sum[v];
    } else {
        return query(v * 2 + 1, mid + 1, tr, qi) + sum[v];
    }
}
void solve(int v) {
    if (!v) {
        return;
    }
    dfn[v] = ++T;
    solve(ls[v]);
    solve(rs[v]);
    dfo[v] = T;
    dp[v] = dp[ls[v]] + dp[rs[v]];
    for (int i : ids[v]) {
        dp[v] = max(dp[v], dp[ls[v]] + dp[rs[v]] + c[i] + query(1, 1, n, dfn[x[i]]));
    }
    modify(1, 1, n, dfn[v], dfo[v], dp[ls[v]] + dp[rs[v]] - dp[v]);
}
int main() {
    scanf("%d", &n);
    for (int i = 1; i <= n; i++) {
        scanf("%d", &a[i]);
    }
    buildSparse();
    scanf("%d", &m);
    for (int i = 1; i <= m; i++) {
        scanf("%d%d%d", &x[i], &y[i], &c[i]);
        int low = 1, high = x[i], from = 0, to = n + 1;
        while (low <= high) {
            int mid = low + high >> 1;
            if (qmax(mid, x[i]).first >= y[i]) {
                from = mid;
                low = mid + 1;
            } else {
                high = mid - 1;
            }
        }
        low = x[i], high = n;
        while (low <= high) {
            int mid = low + high >> 1;
            if (qmax(x[i], mid).first >= y[i]) {
                to = mid;
                high = mid - 1;
            } else {
                low = mid + 1;
            }
        }
        ids[qmax(from + 1, to - 1).second].push_back(i);
    }
    int root;
    dfs(root, 0, n + 1);
    solve(root);
    ll sum = 0;
    for (int i = 1; i <= m; i++) {
        sum += c[i];
    }
    printf("%lld\n", sum - dp[root]);
    return 0;
}

Compilation message

constellation3.cpp: In function 'void modify(int, int, int, int, int, long long int)':
constellation3.cpp:48:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   48 |     int mid = tl + tr >> 1;
      |               ~~~^~~~
constellation3.cpp: In function 'long long int query(int, int, int, int)':
constellation3.cpp:56:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   56 |     int mid = tl + tr >> 1;
      |               ~~~^~~~
constellation3.cpp: In function 'int main()':
constellation3.cpp:88:27: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   88 |             int mid = low + high >> 1;
      |                       ~~~~^~~~~~
constellation3.cpp:98:27: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   98 |             int mid = low + high >> 1;
      |                       ~~~~^~~~~~
constellation3.cpp:78:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   78 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
constellation3.cpp:80:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   80 |         scanf("%d", &a[i]);
      |         ~~~~~^~~~~~~~~~~~~
constellation3.cpp:83:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   83 |     scanf("%d", &m);
      |     ~~~~~^~~~~~~~~~
constellation3.cpp:85:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   85 |         scanf("%d%d%d", &x[i], &y[i], &c[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5076 KB Output is correct
2 Correct 3 ms 5076 KB Output is correct
3 Correct 3 ms 5076 KB Output is correct
4 Correct 3 ms 5152 KB Output is correct
5 Correct 3 ms 5076 KB Output is correct
6 Correct 2 ms 5076 KB Output is correct
7 Correct 3 ms 5076 KB Output is correct
8 Correct 4 ms 5076 KB Output is correct
9 Correct 2 ms 5076 KB Output is correct
10 Correct 3 ms 5076 KB Output is correct
11 Correct 2 ms 5076 KB Output is correct
12 Correct 3 ms 5076 KB Output is correct
13 Correct 2 ms 5076 KB Output is correct
14 Correct 2 ms 5076 KB Output is correct
15 Correct 3 ms 5156 KB Output is correct
16 Correct 3 ms 5076 KB Output is correct
17 Correct 3 ms 5076 KB Output is correct
18 Correct 2 ms 5076 KB Output is correct
19 Correct 3 ms 5076 KB Output is correct
20 Correct 2 ms 5112 KB Output is correct
21 Correct 2 ms 5076 KB Output is correct
22 Correct 2 ms 5076 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5076 KB Output is correct
2 Correct 3 ms 5076 KB Output is correct
3 Correct 3 ms 5076 KB Output is correct
4 Correct 3 ms 5152 KB Output is correct
5 Correct 3 ms 5076 KB Output is correct
6 Correct 2 ms 5076 KB Output is correct
7 Correct 3 ms 5076 KB Output is correct
8 Correct 4 ms 5076 KB Output is correct
9 Correct 2 ms 5076 KB Output is correct
10 Correct 3 ms 5076 KB Output is correct
11 Correct 2 ms 5076 KB Output is correct
12 Correct 3 ms 5076 KB Output is correct
13 Correct 2 ms 5076 KB Output is correct
14 Correct 2 ms 5076 KB Output is correct
15 Correct 3 ms 5156 KB Output is correct
16 Correct 3 ms 5076 KB Output is correct
17 Correct 3 ms 5076 KB Output is correct
18 Correct 2 ms 5076 KB Output is correct
19 Correct 3 ms 5076 KB Output is correct
20 Correct 2 ms 5112 KB Output is correct
21 Correct 2 ms 5076 KB Output is correct
22 Correct 2 ms 5076 KB Output is correct
23 Correct 4 ms 5460 KB Output is correct
24 Correct 4 ms 5460 KB Output is correct
25 Correct 5 ms 5588 KB Output is correct
26 Correct 4 ms 5460 KB Output is correct
27 Correct 4 ms 5540 KB Output is correct
28 Correct 4 ms 5460 KB Output is correct
29 Correct 4 ms 5460 KB Output is correct
30 Correct 4 ms 5460 KB Output is correct
31 Correct 4 ms 5460 KB Output is correct
32 Correct 5 ms 5588 KB Output is correct
33 Correct 4 ms 5588 KB Output is correct
34 Correct 4 ms 5588 KB Output is correct
35 Correct 5 ms 5588 KB Output is correct
36 Correct 4 ms 5544 KB Output is correct
37 Correct 4 ms 5588 KB Output is correct
38 Correct 4 ms 5716 KB Output is correct
39 Correct 5 ms 5460 KB Output is correct
40 Correct 4 ms 5588 KB Output is correct
41 Correct 4 ms 5544 KB Output is correct
42 Correct 4 ms 5460 KB Output is correct
43 Correct 4 ms 5588 KB Output is correct
44 Correct 4 ms 5460 KB Output is correct

Subtask #3
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5076 KB Output is correct
2 Correct 3 ms 5076 KB Output is correct
3 Correct 3 ms 5076 KB Output is correct
4 Correct 3 ms 5152 KB Output is correct
5 Correct 3 ms 5076 KB Output is correct
6 Correct 2 ms 5076 KB Output is correct
7 Correct 3 ms 5076 KB Output is correct
8 Correct 4 ms 5076 KB Output is correct
9 Correct 2 ms 5076 KB Output is correct
10 Correct 3 ms 5076 KB Output is correct
11 Correct 2 ms 5076 KB Output is correct
12 Correct 3 ms 5076 KB Output is correct
13 Correct 2 ms 5076 KB Output is correct
14 Correct 2 ms 5076 KB Output is correct
15 Correct 3 ms 5156 KB Output is correct
16 Correct 3 ms 5076 KB Output is correct
17 Correct 3 ms 5076 KB Output is correct
18 Correct 2 ms 5076 KB Output is correct
19 Correct 3 ms 5076 KB Output is correct
20 Correct 2 ms 5112 KB Output is correct
21 Correct 2 ms 5076 KB Output is correct
22 Correct 2 ms 5076 KB Output is correct
23 Correct 4 ms 5460 KB Output is correct
24 Correct 4 ms 5460 KB Output is correct
25 Correct 5 ms 5588 KB Output is correct
26 Correct 4 ms 5460 KB Output is correct
27 Correct 4 ms 5540 KB Output is correct
28 Correct 4 ms 5460 KB Output is correct
29 Correct 4 ms 5460 KB Output is correct
30 Correct 4 ms 5460 KB Output is correct
31 Correct 4 ms 5460 KB Output is correct
32 Correct 5 ms 5588 KB Output is correct
33 Correct 4 ms 5588 KB Output is correct
34 Correct 4 ms 5588 KB Output is correct
35 Correct 5 ms 5588 KB Output is correct
36 Correct 4 ms 5544 KB Output is correct
37 Correct 4 ms 5588 KB Output is correct
38 Correct 4 ms 5716 KB Output is correct
39 Correct 5 ms 5460 KB Output is correct
40 Correct 4 ms 5588 KB Output is correct
41 Correct 4 ms 5544 KB Output is correct
42 Correct 4 ms 5460 KB Output is correct
43 Correct 4 ms 5588 KB Output is correct
44 Correct 4 ms 5460 KB Output is correct
45 Correct 447 ms 57212 KB Output is correct
46 Correct 441 ms 56808 KB Output is correct
47 Correct 459 ms 56328 KB Output is correct
48 Correct 435 ms 57212 KB Output is correct
49 Correct 452 ms 55872 KB Output is correct
50 Correct 440 ms 55904 KB Output is correct
51 Correct 436 ms 55956 KB Output is correct
52 Correct 459 ms 57304 KB Output is correct
53 Correct 442 ms 56908 KB Output is correct
54 Correct 529 ms 67380 KB Output is correct
55 Correct 511 ms 63380 KB Output is correct
56 Correct 516 ms 61128 KB Output is correct
57 Correct 542 ms 59724 KB Output is correct
58 Correct 471 ms 61336 KB Output is correct
59 Correct 464 ms 61348 KB Output is correct
60 Correct 183 ms 72268 KB Output is correct
61 Correct 523 ms 55892 KB Output is correct
62 Correct 578 ms 67384 KB Output is correct
63 Correct 442 ms 55112 KB Output is correct
64 Correct 452 ms 54332 KB Output is correct
65 Correct 512 ms 67772 KB Output is correct
66 Correct 463 ms 54624 KB Output is correct