//------------------------------------\\
// ------------------------------ \\
// | created by Dinh Manh Hung | \\
// | tht.onepunchac168 | \\
// | THPT CHUYEN HA TINH | \\
// | HA TINH, VIET NAM | \\
// | Siuuu | \\
// ------------------------------ \\
//------------------------------------\\
#include "horses.h"
#include <bits/stdc++.h>
using namespace std;
#define task ""
#define file(name) if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
#define ldb long double
#define pb push_back
#define eb emplace_back
#define fi first
#define se second
#define all(x) begin(x),end(x)
#define uniquev(v) v.resize(unique(all(v))-v.begin())
#define rep(i,a,b) for (int i=a;i<=b;i++)
#define cntbit(v) __builtin_popcountll(v)
#define gcd(a,b) __gcd(a,b)
#define lcm(a,b) ((1LL*a*b)/__gcd(a,b))
#define mask(x) (1LL<<(x))
#define readbit(x,i) ((x>>i)&1)
#define Yes cout << "Yes"
#define YES cout << "YES"
#define No cout << "No"
#define NO cout << "NO"
typedef long long ll;
typedef pair <ll,ll> ii;
typedef pair <ll,ii> iii;
typedef pair <ii,ii> iiii;
ll dx[]= {1,-1,0,0,1,-1,1,-1};
ll dy[]= {0,0,-1,1,1,-1,-1,1};
const ldb PI = acos (-1);
//const ll mod=978846151;
//const ll base=29;
const ll mod=1e9+7;
const char nl = '\n';
inline int ReadInt()
{
char co;
for (co = getchar(); co < '0' || co > '9'; co = getchar());
int xo = co - '0';
for (co = getchar(); co >= '0' && co <= '9'; co = getchar())
xo = (xo<<1) + (xo<<3) + co - '0';
return xo;
}
void WriteInt(int xo)
{
if (xo > 9)
WriteInt(xo / 10);
putchar(xo % 10 + '0');
}
// DEBUG
/*
void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}
template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifndef ONLINE_JUDGE
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
#define debug(x...)
#endif
*/
/* END OF TEMPLATE*/
// ================= Solution =================//
/*
void onepunchac168();
signed main()
{
ios_base::sync_with_stdio(false);
cin.tie(0);
file(task);
int tests;
tests=1;
//cin>>tests;
while (tests--)
{
onepunchac168();
}
}
const int N=2e5+5;
void onepunchac168()
{
}
// goodbye see ya
*/
const int N=5e5+5;
int n;
int x[N];
int y[N];
struct Node{
ii val;
ii pref;
ii suff;
Node()
{
}
} T[4*N];
const ll inf=1e9;
Node merge(Node &a,Node &b)
{
Node target;
bool check=false;
if (a.suff.se==-1||b.pref.se==-1)
{
check=true;
}
else if (a.suff.fi*b.pref.fi>y[a.val.se])
{
check=true;
}
else if (a.suff.fi*b.pref.fi*x[b.val.se]>y[a.val.se])
{
check=true;
}
else if (a.suff.fi*b.pref.fi*x[b.val.se]*y[b.val.se]>y[a.val.se])
{
check=true;
}
if (check==true)
{
bool cka=true;
target.suff=b.suff;
if (a.pref.se==-1||b.pref.se==-1||a.suff.se==-1)
{
cka=false;
}
else
{
ll aa=a.pref.fi*x[a.val.se];
if (aa>inf)
{
cka=false;
}
else
{
aa=aa*b.pref.fi;
if (aa>inf)
{
cka=false;
}
else
{
aa=aa*a.suff.fi;
if (aa>inf)
{
cka=false;
}
}
}
}
if (cka==false)
{
target.pref.se=-1;
target.pref.fi=(((a.pref.fi*x[a.val.se])%mod)*((b.pref.fi*a.suff.fi)%mod))%mod;
}
else
{
target.pref.fi=0;
target.pref.fi=(((a.pref.fi*x[a.val.se])%mod)*((b.pref.fi*a.suff.fi)%mod))%mod;
}
target.val=b.val;
target.val.fi=(((target.val.fi*a.pref.fi)%mod)*((x[a.val.se]*a.suff.fi)%mod))%mod;
return target;
}
target.val=a.val;
target.pref=a.pref;
bool cp=true;
if (a.suff.se=-1||b.pref.se==-1||b.suff.se==-1)
{
cp=false;
}
else
{
ll aa=a.suff.fi;
aa=aa*b.pref.fi;
if (aa>inf)
{
cp=false;
}
else
{
aa=aa*x[b.val.se];
if (aa>inf)
{
cp=false;
}
else
{
aa=aa*b.suff.fi;
if (aa>inf)
{
cp=false;
}
}
}
}
if (cp==false)
{
target.suff.se=-1;
target.suff.fi=(((a.suff.fi*b.pref.fi)%mod)*((b.suff.fi*x[b.val.se])%mod))%mod;
}
else
{
target.suff.se=0;
target.suff.fi=(((a.suff.fi*b.pref.fi)%mod)*((b.suff.fi*x[b.val.se])%mod))%mod;
}
return target;
}
void build(int node,int l,int r)
{
if (l==r)
{
T[node].val={(x[l]*y[l])%mod,l};
T[node].pref={1,0};
T[node].suff={1,0};
return;
}
build(node*2,l,(l+r)/2);
build(node*2+1,(l+r)/2+1,r);
T[node]=merge(T[node*2],T[node*2+1]);
}
void update(int node,int l,int r,int u)
{
if (l>u||r<u)
{
return;
}
if (l==r)
{
T[node].val={(x[l]*y[l])%mod,l};
T[node].pref={1,0};
T[node].suff={1,0};
return;
}
update(node*2,l,(l+r)/2,u);
update(node*2+1,(l+r)/2+1,r,u);
T[node]=merge(T[node*2],T[node*2+1]);
}
int init(int Na, int Xa[], int Ya[]) {
n=Na;
for (int i=1;i<=n;i++)
{
x[i]=Xa[i-1];
y[i]=Ya[i-1];
}
build(1,1,n);
return T[1].val.fi;
}
int updateX(int pos, int val) {
pos++;
x[pos]=val;
update(1,1,n,pos);
return T[1].val.fi;
}
int updateY(int pos, int val) {
pos++;
y[pos]=val;
update(1,1,n,pos);
return T[1].val.fi;
}
Compilation message
horses.cpp:1:1: warning: multi-line comment [-Wcomment]
1 | //------------------------------------\\
| ^
horses.cpp: In function 'int ReadInt()':
horses.cpp:52:22: warning: conversion from 'int' to 'char' may change value [-Wconversion]
52 | for (co = getchar(); co < '0' || co > '9'; co = getchar());
| ~~~~~~~^~
horses.cpp:52:60: warning: conversion from 'int' to 'char' may change value [-Wconversion]
52 | for (co = getchar(); co < '0' || co > '9'; co = getchar());
| ~~~~~~~^~
horses.cpp:54:22: warning: conversion from 'int' to 'char' may change value [-Wconversion]
54 | for (co = getchar(); co >= '0' && co <= '9'; co = getchar())
| ~~~~~~~^~
horses.cpp:54:62: warning: conversion from 'int' to 'char' may change value [-Wconversion]
54 | for (co = getchar(); co >= '0' && co <= '9'; co = getchar())
| ~~~~~~~^~
horses.cpp: In function 'Node merge(Node&, Node&)':
horses.cpp:210:18: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
210 | if (a.suff.se=-1||b.pref.se==-1||b.suff.se==-1)
| ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:20:29: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
20 | #define fi first
| ^
horses.cpp:291:21: note: in expansion of macro 'fi'
291 | return T[1].val.fi;
| ^~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:20:29: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
20 | #define fi first
| ^
horses.cpp:298:18: note: in expansion of macro 'fi'
298 | return T[1].val.fi;
| ^~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:20:29: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
20 | #define fi first
| ^
horses.cpp:305:18: note: in expansion of macro 'fi'
305 | return T[1].val.fi;
| ^~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
14 ms |
97116 KB |
Output is correct |
| 2 |
Correct |
15 ms |
96932 KB |
Output is correct |
| 3 |
Incorrect |
14 ms |
97252 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
13 ms |
96856 KB |
Output is correct |
| 2 |
Correct |
13 ms |
96860 KB |
Output is correct |
| 3 |
Incorrect |
13 ms |
96860 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
88 ms |
106996 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
14 ms |
96856 KB |
Output is correct |
| 2 |
Correct |
14 ms |
96860 KB |
Output is correct |
| 3 |
Incorrect |
13 ms |
97116 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
13 ms |
96860 KB |
Output is correct |
| 2 |
Correct |
13 ms |
97112 KB |
Output is correct |
| 3 |
Incorrect |
13 ms |
96904 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
