oj.uz

Submission #929218

# Submission time Handle Problem Language Result Execution time Memory
929218 2024-02-18T01:03:21 Z OAleksa Horses (IOI15_horses) C++14
54 / 100
 1500 ms 47444 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 = 1;
   for (int L = i + 1;L <= j;L++) {
      if (x > inf / a[L]) {
         x = -1;
         break;
      }
      x *= a[L];
   }
   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, a[pos]);
   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:95:14: warning: declaration of 'N' shadows a global declaration [-Wshadow]
   95 | 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 2 ms 8644 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 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 8540 KB Output is correct
14 Correct 1 ms 8536 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 8536 KB Output is correct
18 Correct 1 ms 8536 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 8536 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 8536 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 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 8540 KB Output is correct
14 Correct 1 ms 8540 KB Output is correct
15 Correct 1 ms 8536 KB Output is correct
16 Correct 1 ms 8536 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 8536 KB Output is correct
21 Correct 1 ms 8540 KB Output is correct
22 Correct 1 ms 8540 KB Output is correct
23 Correct 8 ms 8540 KB Output is correct
24 Correct 7 ms 8540 KB Output is correct
25 Correct 2 ms 8540 KB Output is correct
26 Correct 2 ms 8672 KB Output is correct
27 Correct 12 ms 8536 KB Output is correct
28 Correct 3 ms 8540 KB Output is correct
29 Correct 13 ms 8540 KB Output is correct
30 Correct 3 ms 8540 KB Output is correct
31 Correct 19 ms 8680 KB Output is correct
32 Correct 19 ms 8536 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1456 ms 34628 KB Output is correct
2 Correct 295 ms 34676 KB Output is correct
3 Correct 1354 ms 34640 KB Output is correct
4 Correct 1262 ms 42092 KB Output is correct

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8536 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 2 ms 8540 KB Output is correct
9 Correct 1 ms 8540 KB Output is correct
10 Correct 1 ms 8536 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 2 ms 8540 KB Output is correct
17 Correct 1 ms 8540 KB Output is correct
18 Correct 1 ms 8648 KB Output is correct
19 Correct 1 ms 8540 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 8540 KB Output is correct
23 Correct 8 ms 8540 KB Output is correct
24 Correct 7 ms 8536 KB Output is correct
25 Correct 2 ms 8540 KB Output is correct
26 Correct 2 ms 8540 KB Output is correct
27 Correct 12 ms 8540 KB Output is correct
28 Correct 3 ms 8540 KB Output is correct
29 Correct 13 ms 8676 KB Output is correct
30 Correct 4 ms 8540 KB Output is correct
31 Correct 19 ms 8540 KB Output is correct
32 Correct 20 ms 8540 KB Output is correct
33 Execution timed out 1563 ms 33512 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 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 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 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 8540 KB Output is correct
17 Correct 1 ms 8540 KB Output is correct
18 Correct 1 ms 8536 KB Output is correct
19 Correct 1 ms 8536 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 8652 KB Output is correct
23 Correct 8 ms 8536 KB Output is correct
24 Correct 8 ms 8536 KB Output is correct
25 Correct 2 ms 8540 KB Output is correct
26 Correct 2 ms 8540 KB Output is correct
27 Correct 11 ms 8676 KB Output is correct
28 Correct 3 ms 8540 KB Output is correct
29 Correct 13 ms 8540 KB Output is correct
30 Correct 3 ms 8540 KB Output is correct
31 Correct 19 ms 8672 KB Output is correct
32 Correct 19 ms 8540 KB Output is correct
33 Correct 1458 ms 34788 KB Output is correct
34 Correct 284 ms 47444 KB Output is correct
35 Correct 1361 ms 38380 KB Output is correct
36 Correct 1274 ms 42264 KB Output is correct
37 Execution timed out 1535 ms 37436 KB Time limit exceeded
38 Halted 0 ms 0 KB -