oj.uz

Submission #572140

# Submission time Handle Problem Language Result Execution time Memory
572140 2022-06-03T18:41:57 Z beaconmc Horses (IOI15_horses) C++14
57 / 100
 388 ms 81208 KB 
#include <bits/stdc++.h>
#pragma GCC optimize("O3")
typedef long long ll;

#define FOR(i,x,y) for(ll i=x; i<y; i++)
#define FORNEG(i,x,y) for(ll i=x; i>y; i--)
#define double long double
#define SIZE 1048576
#define HSIZE 524288
#define MOD 1000000007
// #include "horses.h"
using namespace std;

vector<ll> x, y, xx, yy;
ll n;


ll tree[SIZE];
ll tree2[SIZE];

set<vector<ll>> ranges;

void update(ll a,ll b){
    a += HSIZE;
    tree[a] = b;
    while (a>1){
        a/=2;
        tree[a] = tree[a*2]*tree[a*2+1]%MOD;
    }
}
void update2(ll a,ll b){
    a += HSIZE;
    tree2[a] = b;
    while (a>1){
        a/=2;
        tree2[a] = max(tree2[a*2], tree2[a*2+1]);
    }
}

ll query(ll a, ll b){
    a += HSIZE;
    b += HSIZE;
    ll maxi = 1;
    while (a<=b){
        if (a%2==1){
            maxi *= tree[a++]; 
            maxi %= MOD;
        }
        if (b%2==0){
            maxi *= tree[b--];
            maxi %= MOD;
        }
        a/=2; b/=2;
    }
    return maxi;
}
ll query2(ll a, ll b){
    a += HSIZE;
    b += HSIZE;
    ll maxi = 0;
    while (a<=b){
        if (a%2==1){
            maxi = max(maxi, tree2[a++]); 
        }
        if (b%2==0){
            maxi = max(maxi, tree2[b--]);
        }
        a/=2; b/=2;
    }
    return maxi;
}




int solve(){

	vector<ll> xx;
	vector<ll> yy;
	vector<ll> pos;

	ll cur = 31;
	auto it = ranges.end();

	while (cur--){
		it--;
		xx.push_back(x[(*it)[0]]);
		yy.push_back(query2((*it)[0], (*it)[1]));
		pos.push_back((*it)[0]);
		if (it==ranges.begin()){
			break;
		}
	}
	reverse(xx.begin(), xx.end());
	reverse(yy.begin(), yy.end());
	reverse(pos.begin(), pos.end());

	cur = 1;
	ll maxsum = 1;
	ll maxpos = -1;

	FOR(i,0, xx.size()){
		cur *= xx[i];

		if (cur >= maxsum/yy[i]){
			cur = 1;
			maxsum = yy[i];
			maxpos = i;
		}
	}

	int realsus = (query(0, pos[maxpos]) * maxsum) % 1000000007;


	return realsus;

}

int init(int N, int X[], int Y[]) {
	n = N;
	FOR(i,0,N){
		x.push_back(X[i]);
		update(i, X[i]);
		y.push_back(Y[i]);
		update2(i, Y[i]);
	}
	ll prev = -1;

	FORNEG(i, n-1, -1){
		if (x[i] == 1 && prev==-1){
			prev = i;
		}

		if (x[i] != 1){
			if (prev != -1){
				ranges.insert({i, prev});
				prev = -1;
			}else{
				ranges.insert({i,i});
			}
		}
	}


	if (prev != -1){
		ranges.insert({0, prev});
	}


	return solve();

}

int updateX(int pos, int val) {
	if (x[pos] == val) return solve();
	update(pos, val);
	if (pos!=0){
		if (x[pos] == 1 && val != 1){
			auto it = ranges.upper_bound({pos, 9999999999});
			it--;
			vector<ll> first = *it;
			ranges.insert({first[0], pos-1});
			ranges.insert({pos, first[1]});
			ranges.erase(it);
		}


		if (x[pos] != 1 && val == 1){
			auto it = ranges.upper_bound({pos, 9999999999});
			it--;
			vector<ll> first = *it;
			it --;
			vector<ll> second = *it;
			ranges.erase(first);ranges.erase(second);
			ranges.insert({second[0], first[1]});
		}
	}


	x[pos] = val;
	return solve();
}

int updateY(int pos, int val) {

	update2(pos, val);
	y[pos] = val;
	return solve();

}

Compilation message

horses.cpp: In function 'int solve()':
horses.cpp:78:13: warning: declaration of 'xx' shadows a global declaration [-Wshadow]
   78 |  vector<ll> xx;
      |             ^~
horses.cpp:14:18: note: shadowed declaration is here
   14 | vector<ll> x, y, xx, yy;
      |                  ^~
horses.cpp:79:13: warning: declaration of 'yy' shadows a global declaration [-Wshadow]
   79 |  vector<ll> yy;
      |             ^~
horses.cpp:14:22: note: shadowed declaration is here
   14 | vector<ll> x, y, xx, yy;
      |                      ^~
horses.cpp:5:33: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 | #define FOR(i,x,y) for(ll i=x; i<y; i++)
......
  102 |  FOR(i,0, xx.size()){
      |      ~~~~~~~~~~~~~~              
horses.cpp:102:2: note: in expansion of macro 'FOR'
  102 |  FOR(i,0, xx.size()){
      |  ^~~
horses.cpp:112:49: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  112 |  int realsus = (query(0, pos[maxpos]) * maxsum) % 1000000007;
      |                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 392 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 4 ms 468 KB Output is correct
24 Correct 3 ms 448 KB Output is correct
25 Correct 2 ms 580 KB Output is correct
26 Correct 2 ms 576 KB Output is correct
27 Correct 2 ms 468 KB Output is correct
28 Correct 2 ms 596 KB Output is correct
29 Correct 1 ms 468 KB Output is correct
30 Correct 3 ms 580 KB Output is correct
31 Correct 2 ms 468 KB Output is correct
32 Correct 3 ms 468 KB Output is correct

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 388 ms 75592 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 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 2 ms 468 KB Output is correct
24 Correct 2 ms 468 KB Output is correct
25 Correct 2 ms 596 KB Output is correct
26 Correct 2 ms 600 KB Output is correct
27 Correct 3 ms 468 KB Output is correct
28 Correct 4 ms 596 KB Output is correct
29 Correct 1 ms 468 KB Output is correct
30 Correct 3 ms 596 KB Output is correct
31 Correct 2 ms 448 KB Output is correct
32 Correct 2 ms 476 KB Output is correct
33 Correct 128 ms 28932 KB Output is correct
34 Correct 124 ms 28980 KB Output is correct
35 Correct 292 ms 75616 KB Output is correct
36 Correct 295 ms 75652 KB Output is correct
37 Correct 121 ms 28876 KB Output is correct
38 Correct 186 ms 52628 KB Output is correct
39 Correct 107 ms 28836 KB Output is correct
40 Correct 278 ms 75740 KB Output is correct
41 Correct 112 ms 28988 KB Output is correct
42 Correct 118 ms 30064 KB Output is correct
43 Correct 270 ms 81208 KB Output is correct
44 Correct 260 ms 81024 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 2 ms 444 KB Output is correct
24 Correct 3 ms 468 KB Output is correct
25 Correct 4 ms 596 KB Output is correct
26 Correct 2 ms 596 KB Output is correct
27 Correct 2 ms 448 KB Output is correct
28 Correct 3 ms 596 KB Output is correct
29 Correct 1 ms 468 KB Output is correct
30 Correct 3 ms 596 KB Output is correct
31 Correct 2 ms 468 KB Output is correct
32 Correct 2 ms 468 KB Output is correct
33 Incorrect 379 ms 76492 KB Output isn't correct
34 Halted 0 ms 0 KB -