oj.uz

Submission #893724

# Submission time Handle Problem Language Result Execution time Memory
893724 2023-12-27T10:23:11 Z yellowtoad Horses (IOI15_horses) C++17
100 / 100
 1274 ms 52120 KB 
#include "horses.h"
#include <iostream>
#define int long long
using namespace std;

const long long mod = 1e9+7;
long long n, a[500010], b[500010], node[2000010][3];
bool done;

/*
0: x product
1: max x
2: max y
*/

void build(int id, int x, int y) {
	if (x == y) {
		node[id][0] = a[x]%mod;
		node[id][1] = a[x];
		node[id][2] = b[x];
		return;
	}
	int mid = (x+y)/2;
	build(id*2,x,mid);
	build(id*2+1,mid+1,y);
	node[id][0] = (node[id*2][0]*node[id*2+1][0])%mod;
	node[id][1] = max(node[id*2][1],node[id*2+1][1]);
	node[id][2] = max(node[id*2][2],node[id*2+1][2]);
}

void update(int id, int jd, int x, int y, int pos, int val) {
	if (x == y) {
		node[id][jd] = val;
		return;
	}
	int mid = (x+y)/2;
	if (pos <= mid) update(id*2,jd,x,mid,pos,val);
	else update(id*2+1,jd,mid+1,y,pos,val);
	if (jd == 0) node[id][0] = (node[id*2][0]*node[id*2+1][0])%mod;
	else if (jd == 1) node[id][1] = max(node[id*2][1],node[id*2+1][1]);
	else node[id][2] = max(node[id*2][2],node[id*2+1][2]);
}

int nxt(int id, int x, int y, int r) {
	if (x > r) return 0;
	if (node[id][1] == 1) return 0;
	if (x == y) {
		done = 1;
		return x;
	}
	int mid = (x+y)/2, tmp = nxt(id*2+1,mid+1,y,r);
	if (!done) return nxt(id*2,x,mid,r);
	else return tmp;
}

long long find_max(int id, int x, int y, int l, int r) {
	if ((l <= x) && (y <= r)) return node[id][2];
	if ((y < l) || (r < x)) return 0;
	int mid = (x+y)/2;
	return max(find_max(id*2,x,mid,l,r),find_max(id*2+1,mid+1,y,l,r));
}

long long find_pro(int id, int x, int y, int l, int r) {
	if ((l <= x) && (y <= r)) return node[id][0];
	if ((y < l) || (r < x)) return 1;
	int mid = (x+y)/2;
	return (find_pro(id*2,x,mid,l,r)*find_pro(id*2+1,mid+1,y,l,r))%mod;
}

long long solve() {
	done = 0;
	long long cur = nxt(1,1,n,n)-1, lst = n, maxx = 1;
	while (maxx <= 1e9+7) {
		maxx = max(maxx,find_max(1,1,n,cur+1,lst));
		lst = cur+1;
		maxx *= find_pro(1,1,n,lst,lst);
		done = 0;
		if (cur == -1) break;
		cur = nxt(1,1,n,cur)-1;
	}
	return ((maxx%mod)*find_pro(1,1,n,1,lst-1))%mod;
}

signed init(signed N, signed X[], signed Y[]) {
	n = N;
	for (int i = 0; i < n; i++) a[i+1] = X[i], b[i+1] = Y[i];
	build(1,1,n);
	return solve();
}

signed updateX(signed pos, signed val) {
	pos++;
	update(1,0,1,n,pos,val%mod);
	update(1,1,1,n,pos,val);
	return solve();
}

signed updateY(signed pos, signed val) {
	pos++;
	update(1,2,1,n,pos,val);
	return solve();
}

Compilation message

horses.cpp: In function 'long long int solve()':
horses.cpp:73:9: warning: conversion from 'long long int' to 'double' may change value [-Wconversion]
   73 |  while (maxx <= 1e9+7) {
      |         ^~~~
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:88:14: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   88 |  return solve();
      |         ~~~~~^~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:95:14: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   95 |  return solve();
      |         ~~~~~^~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:101:14: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  101 |  return solve();
      |         ~~~~~^~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4696 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4444 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4444 KB Output is correct
19 Correct 1 ms 4444 KB Output is correct
20 Correct 1 ms 4444 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4440 KB Output is correct
16 Correct 1 ms 4444 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4444 KB Output is correct
19 Correct 1 ms 4444 KB Output is correct
20 Correct 1 ms 4444 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 1 ms 4444 KB Output is correct
24 Correct 1 ms 4444 KB Output is correct
25 Correct 3 ms 4444 KB Output is correct
26 Correct 1 ms 4556 KB Output is correct
27 Correct 7 ms 4444 KB Output is correct
28 Correct 3 ms 4444 KB Output is correct
29 Correct 2 ms 4444 KB Output is correct
30 Correct 2 ms 4444 KB Output is correct
31 Correct 5 ms 4444 KB Output is correct
32 Correct 7 ms 4444 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1020 ms 39600 KB Output is correct
2 Correct 154 ms 52048 KB Output is correct
3 Correct 245 ms 43252 KB Output is correct
4 Correct 146 ms 47164 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4696 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4536 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4444 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4444 KB Output is correct
19 Correct 1 ms 4444 KB Output is correct
20 Correct 1 ms 4444 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 1 ms 4512 KB Output is correct
24 Correct 2 ms 4444 KB Output is correct
25 Correct 2 ms 4444 KB Output is correct
26 Correct 2 ms 4444 KB Output is correct
27 Correct 7 ms 4444 KB Output is correct
28 Correct 3 ms 4628 KB Output is correct
29 Correct 2 ms 4444 KB Output is correct
30 Correct 2 ms 4444 KB Output is correct
31 Correct 6 ms 4440 KB Output is correct
32 Correct 7 ms 4444 KB Output is correct
33 Correct 42 ms 42436 KB Output is correct
34 Correct 35 ms 42596 KB Output is correct
35 Correct 76 ms 49588 KB Output is correct
36 Correct 56 ms 49748 KB Output is correct
37 Correct 153 ms 40784 KB Output is correct
38 Correct 51 ms 41696 KB Output is correct
39 Correct 41 ms 40788 KB Output is correct
40 Correct 52 ms 44456 KB Output is correct
41 Correct 95 ms 40692 KB Output is correct
42 Correct 128 ms 40612 KB Output is correct
43 Correct 33 ms 44880 KB Output is correct
44 Correct 33 ms 44884 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4444 KB Output is correct
17 Correct 1 ms 4440 KB Output is correct
18 Correct 1 ms 4440 KB Output is correct
19 Correct 1 ms 4444 KB Output is correct
20 Correct 1 ms 4444 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 2 ms 4444 KB Output is correct
24 Correct 1 ms 4444 KB Output is correct
25 Correct 2 ms 4444 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct
27 Correct 7 ms 4444 KB Output is correct
28 Correct 3 ms 4624 KB Output is correct
29 Correct 2 ms 4700 KB Output is correct
30 Correct 2 ms 4444 KB Output is correct
31 Correct 5 ms 4444 KB Output is correct
32 Correct 7 ms 4444 KB Output is correct
33 Correct 1006 ms 43416 KB Output is correct
34 Correct 153 ms 52120 KB Output is correct
35 Correct 266 ms 43352 KB Output is correct
36 Correct 146 ms 47048 KB Output is correct
37 Correct 39 ms 42604 KB Output is correct
38 Correct 35 ms 42580 KB Output is correct
39 Correct 82 ms 50004 KB Output is correct
40 Correct 56 ms 49492 KB Output is correct
41 Correct 156 ms 40788 KB Output is correct
42 Correct 50 ms 41548 KB Output is correct
43 Correct 33 ms 40464 KB Output is correct
44 Correct 46 ms 44916 KB Output is correct
45 Correct 89 ms 40528 KB Output is correct
46 Correct 127 ms 40788 KB Output is correct
47 Correct 32 ms 44880 KB Output is correct
48 Correct 33 ms 44936 KB Output is correct
49 Correct 172 ms 44540 KB Output is correct
50 Correct 130 ms 44644 KB Output is correct
51 Correct 336 ms 51540 KB Output is correct
52 Correct 128 ms 50804 KB Output is correct
53 Correct 1274 ms 42964 KB Output is correct
54 Correct 310 ms 43420 KB Output is correct
55 Correct 174 ms 41592 KB Output is correct
56 Correct 189 ms 46404 KB Output is correct
57 Correct 753 ms 42312 KB Output is correct
58 Correct 1194 ms 42900 KB Output is correct
59 Correct 36 ms 44940 KB Output is correct