oj.uz

Submission #764787

# Submission time Handle Problem Language Result Execution time Memory
764787 2023-06-24T04:31:05 Z SanguineChameleon Horses (IOI15_horses) C++17
100 / 100
 514 ms 33924 KB 
#include "horses.h"
#include <bits/stdc++.h>
using namespace std;

const int mod = 1e9 + 7;

int mul(int a, int b) {
	if (a > mod / b) {
		return mod;
	}
	else {
		return a * b;
	}
}

struct node {
	int best;
	int prod1;
	int prod2;
};

const int maxN = 5e5 + 20;
node tree[maxN * 4];
int X[maxN];
int Y[maxN];
int N;

int get(int id, int lt, int rt, int ql, int qr, int type) {
	if (lt == ql && rt == qr) {
		if (type == 1) {
			return tree[id].prod1;
		}
		else {
			return tree[id].prod2;
		}
	}
	int mt = (lt + rt) / 2;
	if (qr <= mt) {
		return get(id * 2, lt, mt, ql, qr, type);
	}
	else if (ql >= mt + 1) {
		return get(id * 2 + 1, mt + 1, rt, ql, qr, type);
	}
	else {
		if (type == 1) {
			return mul(get(id * 2, lt, mt, ql, mt, type), get(id * 2 + 1, mt + 1, rt, mt + 1, qr, type));
		}
		else {
			return 1LL * get(id * 2, lt, mt, ql, mt, type) * get(id * 2 + 1, mt + 1, rt, mt + 1, qr, type) % mod;
		}
	}
}

void merge(int id, int type) {
	if (type == 1) {
		tree[id].prod1 = mul(tree[id * 2].prod1, tree[id * 2 + 1].prod1);
		tree[id].prod2 = 1LL * tree[id * 2].prod2 * tree[id * 2 + 1].prod2 % mod;
	}
	else {
		int best_l = tree[id * 2].best;
		int best_r = tree[id * 2 + 1].best;
		if (mul(get(1, 1, N, best_l + 1, best_r, 1), Y[best_r]) > Y[best_l]) {
			tree[id].best = best_r;
		}
		else {
			tree[id].best = best_l;
		}
	}
}

void build(int id, int lt, int rt, int type) {
	if (lt == rt) {
		if (type == 1) {
			tree[id].prod1 = X[lt];
			tree[id].prod2 = X[lt];
		}
		else {
			tree[id].best = lt;
		}
		return;
	}
	int mt = (lt + rt) / 2;
	build(id * 2, lt, mt, type);
	build(id * 2 + 1, mt + 1, rt, type);
	merge(id, type);
}

void update(int id, int lt, int rt, int pos, int type) {
	if (lt == rt) {
		if (type == 1) {
			tree[id].prod1 = X[lt];
			tree[id].prod2 = X[lt];
		}
		else {
			tree[id].best = lt;
		}
		return;
	}
	int mt = (lt + rt) / 2;
	if (pos <= mt) {
		update(id * 2, lt, mt, pos, type);
	}
	else {
		update(id * 2 + 1, mt + 1, rt, pos, type);
	}
	merge(id, type);
}

int calc() {
	return 1LL * get(1, 1, N, 1, tree[1].best, 2) * Y[tree[1].best] % mod;
}

int init(int _N, int _X[], int _Y[]) {
	N = _N;
	for (int i = 1; i <= N; i++) {
		X[i] = _X[i - 1];
		Y[i] = _Y[i - 1];
	}
	build(1, 1, N, 1);
	build(1, 1, N, 2);
	return calc();
}

int updateX(int pos, int val) {	
	pos++;
	X[pos] = val;
	update(1, 1, N, pos, 1);
	update(1, 1, N, pos, 2);
	return calc();
}

int updateY(int pos, int val) {
	pos++;
	Y[pos] = val;
	update(1, 1, N, pos, 2);
	return calc();
}

Compilation message

horses.cpp: In function 'int get(int, int, int, int, int, int)':
horses.cpp:49:99: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   49 |    return 1LL * get(id * 2, lt, mt, ql, mt, type) * get(id * 2 + 1, mt + 1, rt, mt + 1, qr, type) % mod;
      |           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
horses.cpp: In function 'void merge(int, int)':
horses.cpp:57:70: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   57 |   tree[id].prod2 = 1LL * tree[id * 2].prod2 * tree[id * 2 + 1].prod2 % mod;
      |                    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
horses.cpp: In function 'int calc()':
horses.cpp:110:66: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  110 |  return 1LL * get(1, 1, N, 1, tree[1].best, 2) * Y[tree[1].best] % mod;
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 3 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 2 ms 340 KB Output is correct
30 Correct 2 ms 340 KB Output is correct
31 Correct 2 ms 340 KB Output is correct
32 Correct 2 ms 380 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 199 ms 23092 KB Output is correct
2 Correct 261 ms 33924 KB Output is correct
3 Correct 281 ms 25208 KB Output is correct
4 Correct 330 ms 29028 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 2 ms 340 KB Output is correct
24 Correct 2 ms 368 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 2 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 2 ms 340 KB Output is correct
33 Correct 120 ms 20512 KB Output is correct
34 Correct 107 ms 24384 KB Output is correct
35 Correct 98 ms 31336 KB Output is correct
36 Correct 89 ms 31312 KB Output is correct
37 Correct 120 ms 22812 KB Output is correct
38 Correct 77 ms 23500 KB Output is correct
39 Correct 91 ms 22496 KB Output is correct
40 Correct 87 ms 26356 KB Output is correct
41 Correct 86 ms 22584 KB Output is correct
42 Correct 107 ms 22540 KB Output is correct
43 Correct 69 ms 26724 KB Output is correct
44 Correct 69 ms 26832 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 2 ms 340 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 2 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 2 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 2 ms 340 KB Output is correct
33 Correct 194 ms 23016 KB Output is correct
34 Correct 248 ms 33916 KB Output is correct
35 Correct 293 ms 25120 KB Output is correct
36 Correct 305 ms 29068 KB Output is correct
37 Correct 119 ms 24448 KB Output is correct
38 Correct 110 ms 24380 KB Output is correct
39 Correct 109 ms 31324 KB Output is correct
40 Correct 90 ms 31276 KB Output is correct
41 Correct 105 ms 22600 KB Output is correct
42 Correct 88 ms 23536 KB Output is correct
43 Correct 92 ms 22456 KB Output is correct
44 Correct 87 ms 26440 KB Output is correct
45 Correct 93 ms 22496 KB Output is correct
46 Correct 100 ms 22552 KB Output is correct
47 Correct 70 ms 26780 KB Output is correct
48 Correct 75 ms 26816 KB Output is correct
49 Correct 514 ms 26424 KB Output is correct
50 Correct 427 ms 26400 KB Output is correct
51 Correct 243 ms 33280 KB Output is correct
52 Correct 147 ms 32748 KB Output is correct
53 Correct 510 ms 24712 KB Output is correct
54 Correct 223 ms 25304 KB Output is correct
55 Correct 410 ms 23608 KB Output is correct
56 Correct 285 ms 28236 KB Output is correct
57 Correct 349 ms 24176 KB Output is correct
58 Correct 509 ms 24720 KB Output is correct
59 Correct 68 ms 26824 KB Output is correct