oj.uz

Submission #930048

# Submission time Handle Problem Language Result Execution time Memory
930048 2024-02-18T10:44:56 Z OAleksa Horses (IOI15_horses) C++14
54 / 100
 1500 ms 47376 KB 
#include "horses.h"
#include <bits/stdc++.h>
using namespace std;
const int mod = 1e9 + 7;
const int inf = 1e18 + 69;
const int N = 5e5 + 69;
int n, a[N], b[N], c[N], p[4 * N], g[4 * N], btr[4 * N];
int mul(int x, int y) {
   long long r = 1ll * x * y;
   if (r >= mod)
      r %= mod;
   return r;
}
 
void modify(int v, int tl, int tr, int pos, int x) {
   if (tl == tr)
      p[v] = g[v] = x;
   else {
      int mid = (tl + tr) / 2;
      if (pos <= mid)
         modify(v * 2, tl, mid, pos, x);
      else
         modify(v * 2 + 1, mid + 1, tr, pos, x);
      if (p[v * 2] == -1 || p[v * 2 + 1] == -1 || p[v * 2] > inf / p[v * 2 + 1])
         p[v] = -1;
      else {
         assert(p[v * 2] * p[v * 2 + 1] < inf);
         p[v] = p[v * 2] * p[v * 2 + 1];
      }
      g[v] = mul(g[v * 2], g[v * 2 + 1]);
   }
}
 
int get(int v, int tl, int tr, int l, int r) {
   if (tl > r || tr < l)
      return 1;
   else if (tl >= l && tr <= r)
      return p[v];
   else {
      int mid = (tl + tr) / 2;
      auto l1 = get(v * 2, tl, mid, l, r);
      auto r1 = get(v * 2 + 1, mid + 1, tr, l, r);
      if (l1 == -1 || r1 == -1 || l1 > inf / r1)
         return -1;
      assert(l1 * r1 < inf);
      return l1 * r1;
   }
}
int Get(int v, int tl, int tr, int l, int r) {
   if (tl > r || tr < l)
      return 1;
   else if (tl >= l && tr <= r)
      return g[v];
   else {
      int mid = (tl + tr) / 2;
      return mul(Get(v * 2, tl, mid, l, r), Get(v * 2 + 1, mid + 1, tr, l, r));
   }
}
int Better(int i, int j) {
   if (i > j)
      swap(i, j);
   int x = get(1, 1, n, i+ 1, j);
   if (x < 0 || x > inf / b[j])
      return j;
   return (b[i] > b[j] * x ? i : j);
}
int Result(int i) {
   return mul(Get(1, 1, n, 1, i), b[i]);
}
void Modify(int v, int tl, int tr, int pos, int x) {
   if (tl == tr)
      btr[v] = x;
   else {
      int mid = (tl + tr) / 2;
      if (pos <= mid)
         Modify(v * 2, tl, mid, pos, x);
      else
         Modify(v * 2 + 1, mid + 1, tr, pos, x);
      if (btr[v * 2] == -1)
         btr[v] = btr[v * 2 + 1];
      else if (btr[v * 2 + 1] == -1)
         btr[v] = btr[v * 2];
      else
         btr[v] = Better(btr[v * 2], btr[v * 2 + 1]);
   }
}
 
int init(int N, int X[], int Y[]) {
   n = N;
   fill(p, p + 4 * n + 10, 1);
   fill(g, g + 4 * n + 10, 1);
   fill(btr, btr + 4 * n + 10, -1);
   for (int i = 1;i <= n;i++) {
      a[i] = X[i - 1], b[i] = Y[i - 1];
      modify(1, 1, n, i, a[i]);
   }
   for (int i = 1;i <= n;i++)
      Modify(1, 1, n, i, i);
   return Result(btr[1]);
}
 
int updateX(int pos, int val) {
   pos++;
   a[pos] = val;
   modify(1, 1, n, pos, a[pos]);
   Modify(1, 1, n, pos, pos);
	return Result(btr[1]);
}
 
int updateY(int pos, int val) {
   pos++;
	b[pos] = val;
   Modify(1, 1, n, pos, pos);
	return Result(btr[1]);
}
/*
3
2 1 3
3 4 1
1
2 1 2
*/

Compilation message

horses.cpp:5:22: warning: overflow in conversion from 'double' to 'int' changes value from '1.0000000000000001e+18' to '2147483647' [-Woverflow]
    5 | const int inf = 1e18 + 69;
      |                 ~~~~~^~~~
horses.cpp: In function 'int mul(int, int)':
horses.cpp:12:11: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   12 |    return r;
      |           ^
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:88:14: warning: declaration of 'N' shadows a global declaration [-Wshadow]
   88 | int init(int N, int X[], int Y[]) {
      |          ~~~~^
horses.cpp:6:11: note: shadowed declaration is here
    6 | const int N = 5e5 + 69;
      |           ^

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8540 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 1 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 1 ms 8540 KB Output is correct
8 Correct 1 ms 8540 KB Output is correct
9 Correct 1 ms 8540 KB Output is correct
10 Correct 1 ms 8544 KB Output is correct
11 Correct 1 ms 8540 KB Output is correct
12 Correct 1 ms 8540 KB Output is correct
13 Correct 1 ms 8540 KB Output is correct
14 Correct 1 ms 8540 KB Output is correct
15 Correct 1 ms 8540 KB Output is correct
16 Correct 1 ms 8568 KB Output is correct
17 Correct 1 ms 8540 KB Output is correct
18 Correct 1 ms 8640 KB Output is correct
19 Correct 1 ms 8540 KB Output is correct
20 Correct 1 ms 8540 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8540 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 1 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 1 ms 8540 KB Output is correct
8 Correct 1 ms 8636 KB Output is correct
9 Correct 2 ms 8536 KB Output is correct
10 Correct 1 ms 8540 KB Output is correct
11 Correct 1 ms 8540 KB Output is correct
12 Correct 1 ms 8540 KB Output is correct
13 Correct 1 ms 8536 KB Output is correct
14 Correct 2 ms 8540 KB Output is correct
15 Correct 1 ms 8540 KB Output is correct
16 Correct 1 ms 8540 KB Output is correct
17 Correct 1 ms 8540 KB Output is correct
18 Correct 1 ms 8544 KB Output is correct
19 Correct 2 ms 8948 KB Output is correct
20 Correct 1 ms 8544 KB Output is correct
21 Correct 1 ms 8544 KB Output is correct
22 Correct 1 ms 8540 KB Output is correct
23 Correct 4 ms 8540 KB Output is correct
24 Correct 4 ms 8544 KB Output is correct
25 Correct 3 ms 8540 KB Output is correct
26 Correct 2 ms 8540 KB Output is correct
27 Correct 4 ms 8540 KB Output is correct
28 Correct 3 ms 8656 KB Output is correct
29 Correct 3 ms 8676 KB Output is correct
30 Correct 3 ms 8540 KB Output is correct
31 Correct 3 ms 8540 KB Output is correct
32 Correct 3 ms 8540 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1276 ms 38488 KB Output is correct
2 Correct 1069 ms 47256 KB Output is correct
3 Correct 1342 ms 38652 KB Output is correct
4 Correct 1468 ms 42188 KB Output is correct

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8644 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8792 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 1 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 1 ms 8540 KB Output is correct
8 Correct 1 ms 8540 KB Output is correct
9 Correct 1 ms 8640 KB Output is correct
10 Correct 1 ms 8536 KB Output is correct
11 Correct 1 ms 8540 KB Output is correct
12 Correct 2 ms 8540 KB Output is correct
13 Correct 1 ms 8640 KB Output is correct
14 Correct 1 ms 8540 KB Output is correct
15 Correct 1 ms 8540 KB Output is correct
16 Correct 1 ms 8540 KB Output is correct
17 Correct 1 ms 8540 KB Output is correct
18 Correct 1 ms 8540 KB Output is correct
19 Correct 1 ms 8636 KB Output is correct
20 Correct 1 ms 8540 KB Output is correct
21 Correct 1 ms 8540 KB Output is correct
22 Correct 1 ms 8792 KB Output is correct
23 Correct 4 ms 8536 KB Output is correct
24 Correct 4 ms 8540 KB Output is correct
25 Correct 3 ms 8704 KB Output is correct
26 Correct 3 ms 8540 KB Output is correct
27 Correct 3 ms 8540 KB Output is correct
28 Correct 3 ms 8540 KB Output is correct
29 Correct 3 ms 8540 KB Output is correct
30 Correct 3 ms 8652 KB Output is correct
31 Correct 3 ms 8540 KB Output is correct
32 Correct 3 ms 8540 KB Output is correct
33 Execution timed out 1566 ms 37440 KB Time limit exceeded
34 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8536 KB Output is correct
2 Correct 1 ms 8536 KB Output is correct
3 Correct 2 ms 8536 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 1 ms 8540 KB Output is correct
6 Correct 2 ms 8536 KB Output is correct
7 Correct 1 ms 8540 KB Output is correct
8 Correct 2 ms 8540 KB Output is correct
9 Correct 1 ms 8540 KB Output is correct
10 Correct 1 ms 8540 KB Output is correct
11 Correct 2 ms 8540 KB Output is correct
12 Correct 1 ms 8540 KB Output is correct
13 Correct 1 ms 8540 KB Output is correct
14 Correct 1 ms 8792 KB Output is correct
15 Correct 1 ms 8792 KB Output is correct
16 Correct 1 ms 8540 KB Output is correct
17 Correct 1 ms 8540 KB Output is correct
18 Correct 1 ms 8540 KB Output is correct
19 Correct 1 ms 8540 KB Output is correct
20 Correct 1 ms 8648 KB Output is correct
21 Correct 1 ms 8540 KB Output is correct
22 Correct 1 ms 8540 KB Output is correct
23 Correct 4 ms 8648 KB Output is correct
24 Correct 4 ms 8540 KB Output is correct
25 Correct 3 ms 8540 KB Output is correct
26 Correct 3 ms 8540 KB Output is correct
27 Correct 4 ms 8540 KB Output is correct
28 Correct 3 ms 8540 KB Output is correct
29 Correct 3 ms 8540 KB Output is correct
30 Correct 3 ms 8700 KB Output is correct
31 Correct 3 ms 8536 KB Output is correct
32 Correct 4 ms 8540 KB Output is correct
33 Correct 1281 ms 38488 KB Output is correct
34 Correct 1071 ms 47376 KB Output is correct
35 Correct 1336 ms 38420 KB Output is correct
36 Correct 1463 ms 42324 KB Output is correct
37 Execution timed out 1551 ms 37460 KB Time limit exceeded
38 Halted 0 ms 0 KB -