oj.uz

Submission #96198

# Submission time Handle Problem Language Result Execution time Memory
96198 2019-02-06T22:10:57 Z tincamatei Horses (IOI15_horses) C++14
100 / 100
 637 ms 61020 KB 
#include "horses.h"
#include <bits/stdc++.h>

using namespace std;

const int MAX_N = 500000;
const int MOD = 1000000007;

template<typename T, typename Upd>
struct Aint {
  T aint[1+4*MAX_N];
  T neutralQry, initVal;
  Upd upd;

  Aint(T nq, T iv) {
    neutralQry = nq;
    initVal = iv;
    for(int i = 0; i <= 4*MAX_N; ++i)
      aint[i] = initVal;
  }

  void update(int poz, T val, int l = 1, int r = MAX_N, int nod = 1) {
    if(poz < l || r < poz) return;
    if(l == r)
      aint[nod] = upd.update(aint[nod], val);
    else {
      int mid = (l + r) / 2;
      update(poz, val, l, mid, 2 * nod);
      update(poz, val, mid + 1, r, 2 * nod + 1);
      aint[nod] = upd.query(aint[2 * nod], aint[2 * nod + 1]);
    }
  }

  T query(int i, int j, int l = 1, int r = MAX_N, int nod = 1) {
    if(j < l || r < i) return neutralQry;
    if(i <= l && r <= j) return aint[nod];
    else {
      int mid = (l + r) / 2;
      return upd.query(query(i, j, l, mid, 2 * nod),
                        query(i, j, mid + 1, r, 2 * nod + 1));
    }
  }
};

struct Upd1 {
  int update(int a, int b) { return b; }
  int query(int a, int b)  { return max(a, b); }
};

struct Upd2 {
  int update(int a, int b) { return b; }
  int query(int a, int b)  { return (long long)a * b % MOD;}
};

int N;
int x[1+MAX_N], y[1+MAX_N];

set<int> rel;

Aint<int, Upd1> maxaint(-1, -1);
Aint<int, Upd2> prodaint(1, 1);

int getResult() {
  long long best, rez;
  best = rez = 0;
  set<int>::reverse_iterator it = rel.rbegin();

  while(it != rel.rend() && best != -1) {
    int pos = *it, maxy = maxaint.query(max(1, pos), N);
    if(maxy > best) {
      best = maxy;
      rez = (long long)prodaint.query(1, max(1, pos)) * maxy % MOD;
    }

    if(best <= 1000000000 / x[pos])
      best = best * x[pos];
    else
      best = -1;
    it++;
  }

  return rez;
}

int init(int n, int _x[], int _y[]) {
  N = n;
  x[0] = y[0] = 1;
  rel.insert(0);
  for(int i = 1; i <= n; ++i) {
    x[i] = _x[i - 1];
    y[i] = _y[i - 1];
    if(x[i] != 1)
      rel.insert(i);
    maxaint.update(i, y[i]);
    prodaint.update(i, x[i]);
  }
  return getResult();
}

int updateX(int pos, int val) {
  pos++;

  rel.erase(pos);
  x[pos] = val;
  if(val != 1)
    rel.insert(pos);

  prodaint.update(pos, val);
  return getResult();
}

int updateY(int pos, int val) {
  pos++;
  y[pos] = val;
  maxaint.update(pos, val);
  return getResult();
}

Compilation message

horses.cpp: In member function 'int Upd1::update(int, int)':
horses.cpp:46:18: warning: unused parameter 'a' [-Wunused-parameter]
   int update(int a, int b) { return b; }
                  ^
horses.cpp: In member function 'int Upd2::update(int, int)':
horses.cpp:51:18: warning: unused parameter 'a' [-Wunused-parameter]
   int update(int a, int b) { return b; }
                  ^
horses.cpp: In member function 'int Upd2::query(int, int)':
horses.cpp:52:54: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
   int query(int a, int b)  { return (long long)a * b % MOD;}
                                     ~~~~~~~~~~~~~~~~~^~~~~
horses.cpp: In function 'int getResult()':
horses.cpp:82:10: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
   return rez;
          ^~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 15964 KB Output is correct
2 Correct 13 ms 15992 KB Output is correct
3 Correct 15 ms 15992 KB Output is correct
4 Correct 13 ms 15992 KB Output is correct
5 Correct 14 ms 15992 KB Output is correct
6 Correct 14 ms 15992 KB Output is correct
7 Correct 14 ms 15992 KB Output is correct
8 Correct 14 ms 15992 KB Output is correct
9 Correct 14 ms 15992 KB Output is correct
10 Correct 13 ms 15992 KB Output is correct
11 Correct 14 ms 15908 KB Output is correct
12 Correct 13 ms 15992 KB Output is correct
13 Correct 14 ms 15992 KB Output is correct
14 Correct 14 ms 15992 KB Output is correct
15 Correct 14 ms 15992 KB Output is correct
16 Correct 14 ms 15992 KB Output is correct
17 Correct 15 ms 15992 KB Output is correct
18 Correct 14 ms 15992 KB Output is correct
19 Correct 16 ms 15992 KB Output is correct
20 Correct 14 ms 15964 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 15992 KB Output is correct
2 Correct 13 ms 16048 KB Output is correct
3 Correct 16 ms 15992 KB Output is correct
4 Correct 14 ms 15996 KB Output is correct
5 Correct 18 ms 15992 KB Output is correct
6 Correct 18 ms 15992 KB Output is correct
7 Correct 14 ms 15992 KB Output is correct
8 Correct 13 ms 15992 KB Output is correct
9 Correct 12 ms 15992 KB Output is correct
10 Correct 14 ms 15992 KB Output is correct
11 Correct 12 ms 15992 KB Output is correct
12 Correct 14 ms 16120 KB Output is correct
13 Correct 14 ms 15992 KB Output is correct
14 Correct 14 ms 15992 KB Output is correct
15 Correct 14 ms 15992 KB Output is correct
16 Correct 14 ms 15992 KB Output is correct
17 Correct 15 ms 16068 KB Output is correct
18 Correct 13 ms 15992 KB Output is correct
19 Correct 13 ms 15996 KB Output is correct
20 Correct 14 ms 15992 KB Output is correct
21 Correct 14 ms 15992 KB Output is correct
22 Correct 14 ms 15996 KB Output is correct
23 Correct 20 ms 16120 KB Output is correct
24 Correct 14 ms 15992 KB Output is correct
25 Correct 16 ms 16124 KB Output is correct
26 Correct 15 ms 16092 KB Output is correct
27 Correct 21 ms 16120 KB Output is correct
28 Correct 16 ms 16120 KB Output is correct
29 Correct 16 ms 15992 KB Output is correct
30 Correct 29 ms 16120 KB Output is correct
31 Correct 24 ms 16120 KB Output is correct
32 Correct 18 ms 16092 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 616 ms 48364 KB Output is correct
2 Correct 503 ms 60892 KB Output is correct
3 Correct 595 ms 51984 KB Output is correct
4 Correct 556 ms 55856 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 15996 KB Output is correct
2 Correct 12 ms 15992 KB Output is correct
3 Correct 12 ms 16040 KB Output is correct
4 Correct 14 ms 15992 KB Output is correct
5 Correct 13 ms 15992 KB Output is correct
6 Correct 13 ms 15996 KB Output is correct
7 Correct 13 ms 15992 KB Output is correct
8 Correct 12 ms 15992 KB Output is correct
9 Correct 13 ms 15992 KB Output is correct
10 Correct 14 ms 15992 KB Output is correct
11 Correct 13 ms 15992 KB Output is correct
12 Correct 13 ms 15992 KB Output is correct
13 Correct 14 ms 15992 KB Output is correct
14 Correct 14 ms 15992 KB Output is correct
15 Correct 14 ms 15992 KB Output is correct
16 Correct 14 ms 15964 KB Output is correct
17 Correct 14 ms 15992 KB Output is correct
18 Correct 15 ms 15992 KB Output is correct
19 Correct 17 ms 15992 KB Output is correct
20 Correct 13 ms 15992 KB Output is correct
21 Correct 14 ms 15992 KB Output is correct
22 Correct 14 ms 15996 KB Output is correct
23 Correct 15 ms 16120 KB Output is correct
24 Correct 15 ms 16120 KB Output is correct
25 Correct 15 ms 16124 KB Output is correct
26 Correct 14 ms 16120 KB Output is correct
27 Correct 19 ms 16120 KB Output is correct
28 Correct 15 ms 16120 KB Output is correct
29 Correct 14 ms 16072 KB Output is correct
30 Correct 14 ms 16120 KB Output is correct
31 Correct 16 ms 16120 KB Output is correct
32 Correct 25 ms 16064 KB Output is correct
33 Correct 183 ms 28044 KB Output is correct
34 Correct 184 ms 28136 KB Output is correct
35 Correct 370 ms 58252 KB Output is correct
36 Correct 365 ms 58400 KB Output is correct
37 Correct 203 ms 26048 KB Output is correct
38 Correct 272 ms 38944 KB Output is correct
39 Correct 192 ms 26008 KB Output is correct
40 Correct 356 ms 53344 KB Output is correct
41 Correct 186 ms 26108 KB Output is correct
42 Correct 206 ms 26060 KB Output is correct
43 Correct 350 ms 53688 KB Output is correct
44 Correct 344 ms 53824 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 15916 KB Output is correct
2 Correct 12 ms 15992 KB Output is correct
3 Correct 13 ms 15992 KB Output is correct
4 Correct 13 ms 15992 KB Output is correct
5 Correct 16 ms 15992 KB Output is correct
6 Correct 13 ms 15996 KB Output is correct
7 Correct 17 ms 15992 KB Output is correct
8 Correct 13 ms 15992 KB Output is correct
9 Correct 13 ms 15992 KB Output is correct
10 Correct 12 ms 15992 KB Output is correct
11 Correct 12 ms 15992 KB Output is correct
12 Correct 12 ms 15964 KB Output is correct
13 Correct 13 ms 15992 KB Output is correct
14 Correct 13 ms 15992 KB Output is correct
15 Correct 13 ms 15964 KB Output is correct
16 Correct 15 ms 15992 KB Output is correct
17 Correct 13 ms 15964 KB Output is correct
18 Correct 15 ms 15992 KB Output is correct
19 Correct 14 ms 15992 KB Output is correct
20 Correct 15 ms 15996 KB Output is correct
21 Correct 12 ms 15992 KB Output is correct
22 Correct 13 ms 15992 KB Output is correct
23 Correct 14 ms 16120 KB Output is correct
24 Correct 14 ms 16120 KB Output is correct
25 Correct 15 ms 16204 KB Output is correct
26 Correct 14 ms 16120 KB Output is correct
27 Correct 19 ms 16120 KB Output is correct
28 Correct 14 ms 16120 KB Output is correct
29 Correct 14 ms 16120 KB Output is correct
30 Correct 14 ms 16120 KB Output is correct
31 Correct 15 ms 16120 KB Output is correct
32 Correct 17 ms 16120 KB Output is correct
33 Correct 637 ms 52216 KB Output is correct
34 Correct 478 ms 61020 KB Output is correct
35 Correct 496 ms 52088 KB Output is correct
36 Correct 588 ms 55932 KB Output is correct
37 Correct 186 ms 28028 KB Output is correct
38 Correct 178 ms 28000 KB Output is correct
39 Correct 383 ms 58440 KB Output is correct
40 Correct 359 ms 58332 KB Output is correct
41 Correct 206 ms 26304 KB Output is correct
42 Correct 305 ms 38940 KB Output is correct
43 Correct 171 ms 26040 KB Output is correct
44 Correct 356 ms 53476 KB Output is correct
45 Correct 211 ms 25904 KB Output is correct
46 Correct 198 ms 26104 KB Output is correct
47 Correct 348 ms 53884 KB Output is correct
48 Correct 350 ms 53624 KB Output is correct
49 Correct 290 ms 30956 KB Output is correct
50 Correct 275 ms 30968 KB Output is correct
51 Correct 532 ms 60264 KB Output is correct
52 Correct 419 ms 59748 KB Output is correct
53 Correct 543 ms 29304 KB Output is correct
54 Correct 394 ms 42876 KB Output is correct
55 Correct 245 ms 27000 KB Output is correct
56 Correct 445 ms 55288 KB Output is correct
57 Correct 449 ms 27592 KB Output is correct
58 Correct 503 ms 28080 KB Output is correct
59 Correct 375 ms 53632 KB Output is correct