oj.uz

Submission #126072

# Submission time Handle Problem Language Result Execution time Memory
126072 2019-07-07T01:55:18 Z baluteshih Horses (IOI15_horses) C++14
100 / 100
 234 ms 79224 KB 
#include "horses.h"
#include <bits/stdc++.h>
#define pb push_back
#define ET cout << "\n"
#define ALL(v) v.begin(),v.end()
#define MP make_pair
#define F first
#define S second
#define MEM(i,j) memset(i,j,sizeof i)
#define DB(a,s,e) {for(int i=s;i<e;++i) cout << a[i] << " ";ET;}
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

const ll MOD=1e9+7;

ll cross(ll a,ll aB,ll b,ll bB,ll &B)
{
	if(aB||bB||a*b>MOD) B=1;
	else B=0;
	return a*b%MOD;
}

ll n,y[500005];

struct node
{
	ll crs,mx,L,R,Lb,Rb,B;
	node operator+(const node &a)const{
		node re;
		re.crs=cross(crs,B,a.crs,a.B,re.B);
		if(Rb||a.Lb||R*a.L>MOD||R*a.L*y[a.mx]>=y[mx])
		{
			re.mx=a.mx;
			re.L=cross(crs,B,a.L,a.Lb,re.Lb);
			re.R=a.R,re.Rb=a.Rb;
		}
		else
		{
			re.mx=mx;
			re.L=L,re.Lb=Lb;
			re.R=cross(a.crs,a.B,R,Rb,re.Rb);
		}
		return re;
	}	
}seg[2000000];

void build(ll l,ll r,ll rt,int X[])
{
	if(l==r)
		return seg[rt]=node{(ll)X[l],l,(ll)X[l],1LL,0LL,0LL,0LL},void();
	ll m=l+r>>1;
	build(l,m,rt<<1,X),build(m+1,r,rt<<1|1,X);
	seg[rt]=seg[rt<<1]+seg[rt<<1|1];
}

void modifyx(ll x,ll l,ll r,ll rt,ll v)
{
	if(l==r)
		return seg[rt]=node{v,l,v,1LL,0LL,0LL,0LL},void();
	ll m=l+r>>1;
	if(x<=m) modifyx(x,l,m,rt<<1,v);
	else modifyx(x,m+1,r,rt<<1|1,v);
	seg[rt]=seg[rt<<1]+seg[rt<<1|1];
}

void modifyy(ll x,ll l,ll r,ll rt,ll v)
{
	if(l==r)
		return y[x]=v,void();
	ll m=l+r>>1;
	if(x<=m) modifyy(x,l,m,rt<<1,v);
	else modifyy(x,m+1,r,rt<<1|1,v);
	seg[rt]=seg[rt<<1]+seg[rt<<1|1];
}

ll query(ll L,ll R,ll l,ll r,ll rt)
{
	if(L<=l&&R>=r)
		return seg[rt].crs;
	ll m=l+r>>1;
	if(R<=m) return query(L,R,l,m,rt<<1);
	if(L>m) return query(L,R,m+1,r,rt<<1|1);
	return query(L,R,l,m,rt<<1)*query(L,R,m+1,r,rt<<1|1)%MOD;
}

int init(int N, int X[], int Y[])
{
	n=N;
	for(int i=0;i<N;++i)
		y[i]=Y[i];
	build(0,n-1,1,X);
	return y[seg[1].mx]*query(0,seg[1].mx,0,n-1,1)%MOD;
}

int updateX(int pos, int val)
{
	modifyx(pos,0,n-1,1,val);
	return y[seg[1].mx]*query(0,seg[1].mx,0,n-1,1)%MOD;
}

int updateY(int pos, int val)
{
	modifyy(pos,0,n-1,1,val);
	return y[seg[1].mx]*query(0,seg[1].mx,0,n-1,1)%MOD;
}

Compilation message

horses.cpp: In function 'void build(ll, ll, ll, int*)':
horses.cpp:53:8: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  ll m=l+r>>1;
       ~^~
horses.cpp: In function 'void modifyx(ll, ll, ll, ll, ll)':
horses.cpp:62:8: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  ll m=l+r>>1;
       ~^~
horses.cpp: In function 'void modifyy(ll, ll, ll, ll, ll)':
horses.cpp:72:8: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  ll m=l+r>>1;
       ~^~
horses.cpp: In function 'll query(ll, ll, ll, ll, ll)':
horses.cpp:82:8: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  ll m=l+r>>1;
       ~^~
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:94:48: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
  return y[seg[1].mx]*query(0,seg[1].mx,0,n-1,1)%MOD;
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:100:48: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
  return y[seg[1].mx]*query(0,seg[1].mx,0,n-1,1)%MOD;
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:106:48: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
  return y[seg[1].mx]*query(0,seg[1].mx,0,n-1,1)%MOD;
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 424 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 256 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 380 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 504 KB Output is correct
23 Correct 3 ms 504 KB Output is correct
24 Correct 3 ms 508 KB Output is correct
25 Correct 3 ms 504 KB Output is correct
26 Correct 3 ms 504 KB Output is correct
27 Correct 2 ms 504 KB Output is correct
28 Correct 3 ms 504 KB Output is correct
29 Correct 2 ms 504 KB Output is correct
30 Correct 3 ms 504 KB Output is correct
31 Correct 3 ms 504 KB Output is correct
32 Correct 2 ms 500 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 138 ms 66548 KB Output is correct
2 Correct 208 ms 79220 KB Output is correct
3 Correct 185 ms 70584 KB Output is correct
4 Correct 198 ms 74360 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 256 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 3 ms 504 KB Output is correct
24 Correct 3 ms 504 KB Output is correct
25 Correct 3 ms 504 KB Output is correct
26 Correct 3 ms 504 KB Output is correct
27 Correct 3 ms 504 KB Output is correct
28 Correct 3 ms 504 KB Output is correct
29 Correct 2 ms 504 KB Output is correct
30 Correct 3 ms 504 KB Output is correct
31 Correct 2 ms 504 KB Output is correct
32 Correct 2 ms 504 KB Output is correct
33 Correct 95 ms 69624 KB Output is correct
34 Correct 93 ms 69624 KB Output is correct
35 Correct 109 ms 76536 KB Output is correct
36 Correct 108 ms 76596 KB Output is correct
37 Correct 80 ms 67832 KB Output is correct
38 Correct 81 ms 68728 KB Output is correct
39 Correct 72 ms 67704 KB Output is correct
40 Correct 88 ms 71672 KB Output is correct
41 Correct 77 ms 67704 KB Output is correct
42 Correct 73 ms 67772 KB Output is correct
43 Correct 87 ms 72028 KB Output is correct
44 Correct 87 ms 71928 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 380 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 380 KB Output is correct
23 Correct 3 ms 504 KB Output is correct
24 Correct 3 ms 504 KB Output is correct
25 Correct 3 ms 504 KB Output is correct
26 Correct 2 ms 504 KB Output is correct
27 Correct 3 ms 504 KB Output is correct
28 Correct 3 ms 504 KB Output is correct
29 Correct 2 ms 504 KB Output is correct
30 Correct 2 ms 504 KB Output is correct
31 Correct 3 ms 516 KB Output is correct
32 Correct 2 ms 504 KB Output is correct
33 Correct 139 ms 70392 KB Output is correct
34 Correct 206 ms 79224 KB Output is correct
35 Correct 177 ms 70392 KB Output is correct
36 Correct 192 ms 74348 KB Output is correct
37 Correct 94 ms 69624 KB Output is correct
38 Correct 91 ms 69596 KB Output is correct
39 Correct 113 ms 76536 KB Output is correct
40 Correct 109 ms 76632 KB Output is correct
41 Correct 81 ms 67932 KB Output is correct
42 Correct 81 ms 68728 KB Output is correct
43 Correct 74 ms 67772 KB Output is correct
44 Correct 89 ms 71652 KB Output is correct
45 Correct 73 ms 67836 KB Output is correct
46 Correct 74 ms 67832 KB Output is correct
47 Correct 85 ms 72028 KB Output is correct
48 Correct 85 ms 71928 KB Output is correct
49 Correct 234 ms 71804 KB Output is correct
50 Correct 219 ms 71712 KB Output is correct
51 Correct 175 ms 78468 KB Output is correct
52 Correct 153 ms 78072 KB Output is correct
53 Correct 190 ms 70012 KB Output is correct
54 Correct 153 ms 70520 KB Output is correct
55 Correct 119 ms 68848 KB Output is correct
56 Correct 137 ms 73464 KB Output is correct
57 Correct 127 ms 69384 KB Output is correct
58 Correct 130 ms 69884 KB Output is correct
59 Correct 86 ms 71932 KB Output is correct