oj.uz

Submission #599104

# Submission time Handle Problem Language Result Execution time Memory
599104 2022-07-19T10:06:46 Z Temmie Horses (IOI15_horses) C++17
57 / 100
 595 ms 38140 KB 
#include <bits/stdc++.h>

struct Seg_max {
	
	int size;
	std::vector <int> v;
	
	Seg_max(int s) {
		size = 1;
		while (size < s) {
			size <<= 1;
		}
		v.resize(size << 1, 0);
	}
	
	void update(int ind, int val) {
		update(ind, val, 0, 0, size);
	}
	
	void update(int ind, int val, int now, int l, int r) {
		if (!(r - l - 1)) {
			v[now] = val;
			return;
		}
		int mid = (l + r) >> 1;
		if (ind < mid) {
			update(ind, val, now * 2 + 1, l, mid);
		} else {
			update(ind, val, now * 2 + 2, mid, r);
		}
		v[now] = std::max(v[now * 2 + 1], v[now * 2 + 2]);
	}
	
	int query(int l, int r) {
		return query(l, r, 0, 0, size);
	}
	
	int query(int tl, int tr, int now, int l, int r) {
		if (l >= tr || r <= tl) {
			return 0;
		}
		if (l >= tl && r <= tr) {
			return v[now];
		}
		int mid = (l + r) >> 1;
		return std::max(query(tl, tr, now * 2 + 1, l, mid), query(tl, tr, now * 2 + 2, mid, r));
	}
	
};

constexpr const int mod = 1e9 + 7;

int pw(int x, int p) {
	int res = 1;
	while (p) {
		if (p & 1) {
			res = (long long) res * x % mod;
		}
		p >>= 1;
		x = (long long) x * x % mod;
	}
	return res;
}

int inv(int val) {
	return pw(val, mod - 2);
}

int dv(int nu, int de) {
	nu %= mod;
	de %= mod;
	return (long long) nu * inv(de) % mod;
}

int n;
std::vector <int> gr, pr;
Seg_max seg_max(0);
std::set <int> st;

int tot_gr;

int get() {
	st.insert(0);
	//for (int i = 0; i < n; i++) st.insert(i); // temp
	long long gr_div = 1;
	int res = (long long) tot_gr * pr[n - 1] % mod;
	int last_sfmx = 0;
	for (auto it = st.rbegin(); it != st.rend(); it++) {
		int ind = *it;
		int sfmx = seg_max.query(ind, n);
		if (sfmx >= gr_div * last_sfmx) {
			res = (long long) dv(tot_gr, gr_div) * sfmx % mod;
		}
		//if (res <= (long long) dv(tot_gr, gr_div) * sfmx % mod) {
			//res = (long long) dv(tot_gr, gr_div) * sfmx % mod;
		//}
		last_sfmx = sfmx;
		gr_div *= gr[ind];
		if (gr_div > (1LL << 30) || gr_div * sfmx > (1LL << 30)) {
			break;
		}
	}
	return res;
}

int init(int _n, int _gr[], int _pr[]) {
	n = _n;
	gr.resize(n);
	pr.resize(n);
	seg_max = Seg_max(n);
	tot_gr = 1;
	for (int i = 0; i < n; i++) {
		gr[i] = _gr[i];
		pr[i] = _pr[i];
		if (gr[i] > 1) st.insert(i);
		seg_max.update(i, pr[i]);
		tot_gr = (long long) tot_gr * gr[i] % mod;
	}
	return get();
}

// gr
int updateX(int pos, int val) {
	tot_gr = dv(tot_gr, gr[pos]);
	tot_gr = (long long) tot_gr * (gr[pos] = val) % mod;
	st.erase(pos);
	if (gr[pos] > 1) st.insert(pos);
	return get();
}

// pr
int updateY(int pos, int val) {
	seg_max.update(pos, pr[pos] = val);
	return get();
}

Compilation message

horses.cpp: In function 'int pw(int, int)':
horses.cpp:57:30: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   57 |    res = (long long) res * x % mod;
      |          ~~~~~~~~~~~~~~~~~~~~^~~~~
horses.cpp:60:25: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   60 |   x = (long long) x * x % mod;
      |       ~~~~~~~~~~~~~~~~~~^~~~~
horses.cpp: In function 'int dv(int, int)':
horses.cpp:72:34: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   72 |  return (long long) nu * inv(de) % mod;
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
horses.cpp: In function 'int get()':
horses.cpp:86:43: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   86 |  int res = (long long) tot_gr * pr[n - 1] % mod;
      |            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
horses.cpp:92:33: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   92 |    res = (long long) dv(tot_gr, gr_div) * sfmx % mod;
      |                                 ^~~~~~
horses.cpp:92:48: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   92 |    res = (long long) dv(tot_gr, gr_div) * sfmx % mod;
      |          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:117:39: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  117 |   tot_gr = (long long) tot_gr * gr[i] % mod;
      |            ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:125:48: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  125 |  tot_gr = (long long) tot_gr * (gr[pos] = val) % mod;
      |           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 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 0 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 1 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 1 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 1 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 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 1 ms 212 KB Output is correct
4 Correct 1 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 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 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 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 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 2 ms 340 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 2 ms 312 KB Output is correct
26 Correct 2 ms 340 KB Output is correct
27 Correct 3 ms 340 KB Output is correct
28 Correct 2 ms 340 KB Output is correct
29 Correct 2 ms 308 KB Output is correct
30 Correct 3 ms 340 KB Output is correct
31 Correct 2 ms 340 KB Output is correct
32 Correct 4 ms 360 KB Output is correct

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 495 ms 36620 KB Output isn't correct
2 Halted 0 ms 0 KB -

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 1 ms 212 KB Output is correct
4 Correct 1 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 1 ms 224 KB Output is correct
9 Correct 2 ms 352 KB Output is correct
10 Correct 1 ms 300 KB Output is correct
11 Correct 1 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 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 300 KB Output is correct
17 Correct 1 ms 232 KB Output is correct
18 Correct 2 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 220 KB Output is correct
22 Correct 2 ms 212 KB Output is correct
23 Correct 2 ms 312 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 2 ms 408 KB Output is correct
26 Correct 2 ms 340 KB Output is correct
27 Correct 3 ms 340 KB Output is correct
28 Correct 2 ms 340 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 2 ms 340 KB Output is correct
31 Correct 3 ms 316 KB Output is correct
32 Correct 5 ms 340 KB Output is correct
33 Correct 92 ms 13168 KB Output is correct
34 Correct 82 ms 13232 KB Output is correct
35 Correct 257 ms 36552 KB Output is correct
36 Correct 263 ms 36564 KB Output is correct
37 Correct 120 ms 13288 KB Output is correct
38 Correct 142 ms 25144 KB Output is correct
39 Correct 78 ms 13004 KB Output is correct
40 Correct 211 ms 36484 KB Output is correct
41 Correct 94 ms 13196 KB Output is correct
42 Correct 109 ms 13208 KB Output is correct
43 Correct 214 ms 36560 KB Output is correct
44 Correct 213 ms 36744 KB Output is correct

Subtask #5
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 1 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 1 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 1 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 1 ms 296 KB Output is correct
13 Correct 1 ms 296 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 300 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 296 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 2 ms 308 KB Output is correct
24 Correct 2 ms 308 KB Output is correct
25 Correct 3 ms 340 KB Output is correct
26 Correct 2 ms 316 KB Output is correct
27 Correct 5 ms 360 KB Output is correct
28 Correct 2 ms 340 KB Output is correct
29 Correct 3 ms 340 KB Output is correct
30 Correct 3 ms 384 KB Output is correct
31 Correct 2 ms 340 KB Output is correct
32 Correct 4 ms 348 KB Output is correct
33 Incorrect 595 ms 38140 KB Output isn't correct
34 Halted 0 ms 0 KB -