oj.uz

Submission #333413

# Submission time Handle Problem Language Result Execution time Memory
333413 2020-12-05T21:53:37 Z errorgorn Horses (IOI15_horses) C++17
100 / 100
 273 ms 103916 KB 
//雪花飄飄北風嘯嘯
//天地一片蒼茫

#include "horses.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/rope>
using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;
#define ll long long
#define ii pair<ll,ll>
#define iii pair<ii,ll>
#define fi first
#define se second
#define endl '\n'
#define debug(x) cout << #x << " is " << x << endl

#define rep(x,start,end) for(auto x=(start)-((start)>(end));x!=(end)-((start)>(end));((start)<(end)?x++:x--))
#define all(x) (x).begin(),(x).end()
#define sz(x) (int)(x).size()

#define indexed_set tree<ll,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update>
//change less to less_equal for non distinct pbds, but erase will bug

const int MOD=1000000007;

ll qexp(ll b,ll p,int m){
	ll res=1;
	while (p){
		if (p&1) res=res*b%m;
		b=b*b%m;
		p>>=1;
	}
	return res;
}

ll inv(ll i){
	return qexp(i,MOD-2,MOD);
}

ll arr[500005];
ll brr[500005];

struct node{
	int s,e,m;
	ll val;
	bool over=false;
	ll num,denom;
	
	node *l,*r;
	
	void mx(ll num2,ll denom2){
		if (num2*denom>num*denom2){
			num=num2;
			denom=denom2;
		}
	}
	
	void init(){
		val=arr[s];
		num=brr[s],denom=1;
	}
	
	void comb(){
		val=l->val*r->val;
		over=l->over|r->over;
		if (val>MOD){
			val%=MOD;
			over=true;
		}
		
		if (!r->over) num=brr[m],denom=r->val;
		else num=0,denom=1;
		
		mx(r->num,r->denom);
		if (!r->over && r->val*l->denom<MOD) mx(l->num,r->val*l->denom);
	}
	
	node (int _s,int _e){
		s=_s,e=_e,m=s+e>>1;
		
		if (s!=e){
			l=new node(s,m);
			r=new node(m+1,e);
			comb();
		}
		else{
			init();
		}
	}
	
	void update(int i){
		if (s==e) {
			init();
			return;
		}
		
		if (i<=m) l->update(i);
		else r->update(i);
		
		comb();
	}
} *root;

int init(int n, int X[], int Y[]) {
	rep(x,0,n) arr[x]=X[x];
	rep(x,0,n) brr[x]=Y[x];
	
	root=new node(0,n-1);
	
	return root->val*root->num%MOD*inv(root->denom)%MOD;
}

int updateX(int pos, int val) {	
	arr[pos]=val;
	root->update(pos);
	
	return root->val*root->num%MOD*inv(root->denom)%MOD;
}

int updateY(int pos, int val) {
	brr[pos]=val;
	root->update(pos);
	
	return root->val*root->num%MOD*inv(root->denom)%MOD;
}

Compilation message

horses.cpp: In constructor 'node::node(int, int)':
horses.cpp:82:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   82 |   s=_s,e=_e,m=s+e>>1;
      |               ~^~
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:113:49: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  113 |  return root->val*root->num%MOD*inv(root->denom)%MOD;
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:120:49: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  120 |  return root->val*root->num%MOD*inv(root->denom)%MOD;
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:127:49: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  127 |  return root->val*root->num%MOD*inv(root->denom)%MOD;
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 0 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 0 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 620 KB Output is correct
24 Correct 1 ms 620 KB Output is correct
25 Correct 1 ms 620 KB Output is correct
26 Correct 1 ms 620 KB Output is correct
27 Correct 1 ms 492 KB Output is correct
28 Correct 1 ms 492 KB Output is correct
29 Correct 1 ms 492 KB Output is correct
30 Correct 1 ms 620 KB Output is correct
31 Correct 1 ms 492 KB Output is correct
32 Correct 1 ms 492 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 141 ms 95140 KB Output is correct
2 Correct 273 ms 103916 KB Output is correct
3 Correct 242 ms 95084 KB Output is correct
4 Correct 251 ms 99052 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 620 KB Output is correct
24 Correct 1 ms 620 KB Output is correct
25 Correct 1 ms 620 KB Output is correct
26 Correct 2 ms 620 KB Output is correct
27 Correct 1 ms 492 KB Output is correct
28 Correct 1 ms 492 KB Output is correct
29 Correct 1 ms 492 KB Output is correct
30 Correct 1 ms 620 KB Output is correct
31 Correct 1 ms 492 KB Output is correct
32 Correct 1 ms 492 KB Output is correct
33 Correct 115 ms 94316 KB Output is correct
34 Correct 114 ms 94316 KB Output is correct
35 Correct 131 ms 101356 KB Output is correct
36 Correct 129 ms 101356 KB Output is correct
37 Correct 100 ms 92524 KB Output is correct
38 Correct 97 ms 93420 KB Output is correct
39 Correct 89 ms 92396 KB Output is correct
40 Correct 108 ms 96364 KB Output is correct
41 Correct 90 ms 92524 KB Output is correct
42 Correct 88 ms 92524 KB Output is correct
43 Correct 103 ms 96748 KB Output is correct
44 Correct 106 ms 96776 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 620 KB Output is correct
24 Correct 1 ms 620 KB Output is correct
25 Correct 1 ms 620 KB Output is correct
26 Correct 1 ms 620 KB Output is correct
27 Correct 1 ms 492 KB Output is correct
28 Correct 1 ms 492 KB Output is correct
29 Correct 1 ms 492 KB Output is correct
30 Correct 1 ms 620 KB Output is correct
31 Correct 1 ms 492 KB Output is correct
32 Correct 1 ms 492 KB Output is correct
33 Correct 140 ms 95212 KB Output is correct
34 Correct 270 ms 103916 KB Output is correct
35 Correct 232 ms 95084 KB Output is correct
36 Correct 248 ms 98924 KB Output is correct
37 Correct 112 ms 94444 KB Output is correct
38 Correct 110 ms 94316 KB Output is correct
39 Correct 128 ms 101356 KB Output is correct
40 Correct 128 ms 101356 KB Output is correct
41 Correct 98 ms 92524 KB Output is correct
42 Correct 95 ms 93420 KB Output is correct
43 Correct 86 ms 92396 KB Output is correct
44 Correct 107 ms 96364 KB Output is correct
45 Correct 88 ms 92524 KB Output is correct
46 Correct 87 ms 92524 KB Output is correct
47 Correct 104 ms 96768 KB Output is correct
48 Correct 101 ms 96748 KB Output is correct
49 Correct 251 ms 96492 KB Output is correct
50 Correct 251 ms 96364 KB Output is correct
51 Correct 171 ms 103148 KB Output is correct
52 Correct 172 ms 102636 KB Output is correct
53 Correct 235 ms 94700 KB Output is correct
54 Correct 150 ms 95340 KB Output is correct
55 Correct 135 ms 93548 KB Output is correct
56 Correct 156 ms 98156 KB Output is correct
57 Correct 132 ms 94060 KB Output is correct
58 Correct 132 ms 94652 KB Output is correct
59 Correct 101 ms 96748 KB Output is correct