oj.uz

Submission #1030040

# Submission time Handle Problem Language Result Execution time Memory
1030040 2024-07-21T17:12:55 Z TraianDanciu Colouring a rectangle (eJOI19_colouring) C++17
100 / 100
 505 ms 37236 KB 
#include <stdio.h>
#include <vector>

static inline long long min(long long a, long long b) {
  return a < b ? a : b;
}
static inline long long max(long long a, long long b) {
  return a > b ? a : b;
}

#define MAXN 200000
#define INFINIT 1000000000000000000

int a[MAXN * 2];
struct Restrictie {
  int st, dr, val;
} v[MAXN * 2];

int cost[MAXN], st[MAXN], p[MAXN];
std::vector<int> dr[MAXN];

struct SegmentTree {
  long long aint[4 * (MAXN + 1)], lazy[4 * (MAXN + 1)], qval;
  int n, qleft, qright;

  void init(int n) {
    int i;
    
    this->n = n;
    for(i = 0; i < 4 * n; i++) {
      aint[i] = lazy[i] = 0;
    }
  }

  void propagate(int node, int left, int right) {
    aint[node] += lazy[node];
    if(left < right) {
      lazy[2 * node + 1] += lazy[node];
      lazy[2 * node + 2] += lazy[node];
    }
    lazy[node] = 0;
  }

  void _update(int node, int left, int right) {
    int middle;

    propagate(node, left, right);
    if(qleft <= left && right <= qright) {
      lazy[node] += qval;
      propagate(node, left, right);
    } else {
      middle = (left + right) / 2;
      propagate(2 * node + 1, left, middle);
      propagate(2 * node + 2, middle + 1, right);
      if(qleft <= middle) {
        _update(2 * node + 1, left, middle);
      }
      if(middle < qright) {
        _update(2 * node + 2, middle + 1, right);
      }
      aint[node] = min(aint[2 * node + 1], aint[2 * node + 2]);
    }
  }
  void update(int qleft, int qright, long long qval) {
    this->qleft = qleft;
    this->qright = qright;
    this->qval = qval;
    _update(0, 0, n - 1);
  }

  long long _query(int node, int left, int right) {
    int middle;
    long long ans;

    propagate(node, left, right);
    if(qleft <= left && right <= qright) {
      return aint[node];
    }

    middle = (left + right) / 2;
    ans = INFINIT;
    if(qleft <= middle) {
      ans = min(ans, _query(2 * node + 1, left, middle));
    }
    if(middle < qright) {
      ans = min(ans, _query(2 * node + 2, middle + 1, right));
    }

    return ans;
  }
  long long query(int qleft, int qright) {
    this->qleft = qleft;
    this->qright = qright;
    return _query(0, 0, n - 1);
  }
} aint;

int main() {
  int n, m, i, j, l, c, j1, j2, nnou;
  long long ans;

  scanf("%d%d", &n, &m);
  for(i = 0; i < n + m - 1; i++) {
    scanf("%d", &a[i]);
  }
  for(i = 0; i < n + m - 1; i++) {
    scanf("%d", &v[i].val);

    c = min(i, m - 1);
    l = i - c;
    v[i].st = l - c + m - 1;
    
    c = max(0, i - n + 1);
    l = i - c;
    v[i].dr = l - c + m - 1;
  }

  ans = 0;
  for(j1 = 0; j1 < 2; j1++) {
    j2 = v[j1].st % 2;

    nnou = 0;
    for(i = j1; i < n + m - 1; i += 2) {
      cost[nnou++] = a[i];
    }
    for(i = j2; i < n + m - 1; i += 2) {
      st[i / 2] = v[i].st / 2;
      dr[v[i].dr / 2].push_back(i / 2);
      p[i / 2] = v[i].val;
    }

    aint.init(nnou + 1);
    for(i = 0; i < nnou; i++) {
      aint.update(i + 1, i + 1, aint.query(0, i));
      aint.update(0, i, cost[i]);
      for(j = 0; j < (int)dr[i].size(); j++) {
        aint.update(st[dr[i][j]] + 1, i + 1, p[dr[i][j]]);
      }
    }
    ans += aint.query(0, nnou);

    for(i = 0; i < nnou; i++) {
      dr[i].clear();
    } 
  }

  printf("%lld\n", ans);
  return 0;
}

Compilation message

colouring.cpp: In function 'int main()':
colouring.cpp:102:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  102 |   scanf("%d%d", &n, &m);
      |   ~~~~~^~~~~~~~~~~~~~~~
colouring.cpp:104:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  104 |     scanf("%d", &a[i]);
      |     ~~~~~^~~~~~~~~~~~~
colouring.cpp:107:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  107 |     scanf("%d", &v[i].val);
      |     ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4956 KB Output is correct
2 Correct 3 ms 6236 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 6232 KB Output is correct
5 Correct 2 ms 4956 KB Output is correct
6 Correct 3 ms 4956 KB Output is correct
7 Correct 3 ms 4956 KB Output is correct
8 Correct 2 ms 4956 KB Output is correct
9 Correct 3 ms 6236 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4956 KB Output is correct
2 Correct 3 ms 6236 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 6232 KB Output is correct
5 Correct 2 ms 4956 KB Output is correct
6 Correct 3 ms 4956 KB Output is correct
7 Correct 3 ms 4956 KB Output is correct
8 Correct 2 ms 4956 KB Output is correct
9 Correct 3 ms 6236 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct
11 Correct 2 ms 4952 KB Output is correct
12 Correct 3 ms 4956 KB Output is correct
13 Correct 2 ms 4956 KB Output is correct
14 Correct 2 ms 4956 KB Output is correct
15 Correct 2 ms 5128 KB Output is correct
16 Correct 2 ms 6236 KB Output is correct
17 Correct 2 ms 5136 KB Output is correct
18 Correct 2 ms 4956 KB Output is correct
19 Correct 2 ms 4956 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4956 KB Output is correct
2 Correct 3 ms 6236 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 6232 KB Output is correct
5 Correct 2 ms 4956 KB Output is correct
6 Correct 3 ms 4956 KB Output is correct
7 Correct 3 ms 4956 KB Output is correct
8 Correct 2 ms 4956 KB Output is correct
9 Correct 3 ms 6236 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct
11 Correct 2 ms 4952 KB Output is correct
12 Correct 3 ms 4956 KB Output is correct
13 Correct 2 ms 4956 KB Output is correct
14 Correct 2 ms 4956 KB Output is correct
15 Correct 2 ms 5128 KB Output is correct
16 Correct 2 ms 6236 KB Output is correct
17 Correct 2 ms 5136 KB Output is correct
18 Correct 2 ms 4956 KB Output is correct
19 Correct 2 ms 4956 KB Output is correct
20 Correct 3 ms 4956 KB Output is correct
21 Correct 2 ms 4956 KB Output is correct
22 Correct 2 ms 4956 KB Output is correct
23 Correct 2 ms 4956 KB Output is correct
24 Correct 3 ms 6236 KB Output is correct
25 Correct 3 ms 4956 KB Output is correct
26 Correct 3 ms 4956 KB Output is correct
27 Correct 2 ms 6236 KB Output is correct
28 Correct 3 ms 6232 KB Output is correct
29 Correct 2 ms 6236 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4956 KB Output is correct
2 Correct 3 ms 6236 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 6232 KB Output is correct
5 Correct 2 ms 4956 KB Output is correct
6 Correct 3 ms 4956 KB Output is correct
7 Correct 3 ms 4956 KB Output is correct
8 Correct 2 ms 4956 KB Output is correct
9 Correct 3 ms 6236 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct
11 Correct 2 ms 4952 KB Output is correct
12 Correct 3 ms 4956 KB Output is correct
13 Correct 2 ms 4956 KB Output is correct
14 Correct 2 ms 4956 KB Output is correct
15 Correct 2 ms 5128 KB Output is correct
16 Correct 2 ms 6236 KB Output is correct
17 Correct 2 ms 5136 KB Output is correct
18 Correct 2 ms 4956 KB Output is correct
19 Correct 2 ms 4956 KB Output is correct
20 Correct 3 ms 4956 KB Output is correct
21 Correct 2 ms 4956 KB Output is correct
22 Correct 2 ms 4956 KB Output is correct
23 Correct 2 ms 4956 KB Output is correct
24 Correct 3 ms 6236 KB Output is correct
25 Correct 3 ms 4956 KB Output is correct
26 Correct 3 ms 4956 KB Output is correct
27 Correct 2 ms 6236 KB Output is correct
28 Correct 3 ms 6232 KB Output is correct
29 Correct 2 ms 6236 KB Output is correct
30 Correct 5 ms 6492 KB Output is correct
31 Correct 4 ms 5212 KB Output is correct
32 Correct 6 ms 5212 KB Output is correct
33 Correct 3 ms 6488 KB Output is correct
34 Correct 7 ms 5212 KB Output is correct
35 Correct 3 ms 5212 KB Output is correct
36 Correct 3 ms 6492 KB Output is correct
37 Correct 4 ms 5212 KB Output is correct
38 Correct 4 ms 5212 KB Output is correct
39 Correct 3 ms 6492 KB Output is correct
40 Correct 4 ms 6552 KB Output is correct
41 Correct 5 ms 6492 KB Output is correct
42 Correct 4 ms 5212 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 176 ms 20060 KB Output is correct
2 Correct 170 ms 20084 KB Output is correct
3 Correct 187 ms 19996 KB Output is correct
4 Correct 206 ms 20084 KB Output is correct
5 Correct 181 ms 19856 KB Output is correct
6 Correct 180 ms 20048 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 485 ms 29356 KB Output is correct
2 Correct 479 ms 37104 KB Output is correct
3 Correct 464 ms 37000 KB Output is correct
4 Correct 502 ms 37204 KB Output is correct
5 Correct 505 ms 37236 KB Output is correct
6 Correct 470 ms 34404 KB Output is correct
7 Correct 445 ms 36760 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4956 KB Output is correct
2 Correct 3 ms 6236 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 6232 KB Output is correct
5 Correct 2 ms 4956 KB Output is correct
6 Correct 3 ms 4956 KB Output is correct
7 Correct 3 ms 4956 KB Output is correct
8 Correct 2 ms 4956 KB Output is correct
9 Correct 3 ms 6236 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct
11 Correct 2 ms 4952 KB Output is correct
12 Correct 3 ms 4956 KB Output is correct
13 Correct 2 ms 4956 KB Output is correct
14 Correct 2 ms 4956 KB Output is correct
15 Correct 2 ms 5128 KB Output is correct
16 Correct 2 ms 6236 KB Output is correct
17 Correct 2 ms 5136 KB Output is correct
18 Correct 2 ms 4956 KB Output is correct
19 Correct 2 ms 4956 KB Output is correct
20 Correct 3 ms 4956 KB Output is correct
21 Correct 2 ms 4956 KB Output is correct
22 Correct 2 ms 4956 KB Output is correct
23 Correct 2 ms 4956 KB Output is correct
24 Correct 3 ms 6236 KB Output is correct
25 Correct 3 ms 4956 KB Output is correct
26 Correct 3 ms 4956 KB Output is correct
27 Correct 2 ms 6236 KB Output is correct
28 Correct 3 ms 6232 KB Output is correct
29 Correct 2 ms 6236 KB Output is correct
30 Correct 5 ms 6492 KB Output is correct
31 Correct 4 ms 5212 KB Output is correct
32 Correct 6 ms 5212 KB Output is correct
33 Correct 3 ms 6488 KB Output is correct
34 Correct 7 ms 5212 KB Output is correct
35 Correct 3 ms 5212 KB Output is correct
36 Correct 3 ms 6492 KB Output is correct
37 Correct 4 ms 5212 KB Output is correct
38 Correct 4 ms 5212 KB Output is correct
39 Correct 3 ms 6492 KB Output is correct
40 Correct 4 ms 6552 KB Output is correct
41 Correct 5 ms 6492 KB Output is correct
42 Correct 4 ms 5212 KB Output is correct
43 Correct 176 ms 20060 KB Output is correct
44 Correct 170 ms 20084 KB Output is correct
45 Correct 187 ms 19996 KB Output is correct
46 Correct 206 ms 20084 KB Output is correct
47 Correct 181 ms 19856 KB Output is correct
48 Correct 180 ms 20048 KB Output is correct
49 Correct 485 ms 29356 KB Output is correct
50 Correct 479 ms 37104 KB Output is correct
51 Correct 464 ms 37000 KB Output is correct
52 Correct 502 ms 37204 KB Output is correct
53 Correct 505 ms 37236 KB Output is correct
54 Correct 470 ms 34404 KB Output is correct
55 Correct 445 ms 36760 KB Output is correct
56 Correct 169 ms 23380 KB Output is correct
57 Correct 199 ms 23608 KB Output is correct
58 Correct 204 ms 23812 KB Output is correct
59 Correct 203 ms 22560 KB Output is correct
60 Correct 192 ms 23792 KB Output is correct
61 Correct 200 ms 23892 KB Output is correct
62 Correct 175 ms 22636 KB Output is correct
63 Correct 208 ms 23968 KB Output is correct
64 Correct 190 ms 24036 KB Output is correct
65 Correct 211 ms 24660 KB Output is correct
66 Correct 271 ms 26288 KB Output is correct
67 Correct 283 ms 27732 KB Output is correct
68 Correct 467 ms 34404 KB Output is correct
69 Correct 449 ms 35852 KB Output is correct
70 Correct 362 ms 31128 KB Output is correct