oj.uz

Submission #858238

# Submission time Handle Problem Language Result Execution time Memory
858238 2023-10-07T16:37:28 Z Huseyn123 Horses (IOI15_horses) C++17
100 / 100
 597 ms 73812 KB 
#include <bits/stdc++.h>
#include "horses.h"
#define MAX 1000001
#define INF LLONG_MAX
#define MOD 1000000007
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define ins insert
#define ff first
#define ss second
#define gett(x,m) get<m>(x)
#define all(a) a.begin(),a.end()
#define lb(a,b) lower_bound(all(a),b)
#define ub(a,b) upper_bound(all(a),b)
#define sortv(a) sort(all(a))
#define sorta(a,sz) sort(a,a+sz)
#define inputar(a,b){\
    for(int i=0;i<b;i++){\
        cin >> a[i];\
    }\
}
#define inputvec(a,b){\
    for(int i=0;i<b;i++){\
        ll num;\
        cin >> num;\
        a.pb(num);\
    }\
}
#define outputar(a,b){\
    for(int i=0;i<b;i++){\
        cout << a[i] << " ";\
    }\
    cout << "\n";\
}
#define outputvec(a){\
    for(auto x:a){\
        cout << x << " ";\
    }\
    cout << "\n";\
}
#define reset(a,n,v){\
    for(int i=0;i<n;i++){\
        a[i]=v;\
    }\
}
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef tuple<ll,ll,ll> tll;
typedef pair<ll,ll> pll;
typedef pair<int,int> pii;
typedef double db;
typedef long double ldb;
int n;
vector<ll> X1,Y1;
bool ok=false;
struct segtree_mul{
    int size;
    vector<ll> muls;
    void build(vector<ll> &a,int x,int lx,int rx){
        if(rx-lx==1){
            if(lx<(int)a.size()){
                muls[x]=a[lx];
            }
            return;
        }
        int m=(lx+rx)/2;
        build(a,2*x+1,lx,m);
        build(a,2*x+2,m,rx);
        muls[x]=muls[2*x+1]*muls[2*x+2];
        muls[x]%=MOD;
    }
    void build(vector<ll> &a){
        build(a,0,0,size);
    }
    void init(int n){
        size=1;
        while(size<n){
            size*=2;
        }
        muls.assign(2*size,1);
    }
    ll mul(int l,int r,int x,int lx,int rx){
        if(lx>=r || rx<=l){
            return 1;
        }
        if(lx>=l && rx<=r){
            return muls[x];
        }
        ll s1,s2;
        int m=(lx+rx)/2;
        s1=mul(l,r,2*x+1,lx,m);
        s2=mul(l,r,2*x+2,m,rx);
        return (s1*s2)%MOD;
    }
    ll mul(int l,int r){
        return mul(l,r,0,0,size);
    }
    void set(int i,int v,int x,int lx,int rx){
        if(rx-lx==1){
            muls[x]=v;
            return;
        }
        int m=(lx+rx)/2;
        if(i<m){
            set(i,v,2*x+1,lx,m);
        }
        else{
            set(i,v,2*x+2,m,rx);
        }
        muls[x]=muls[2*x+1]*muls[2*x+2];
        muls[x]%=MOD;
    }
    void set(int i,int v){
        set(i,v,0,0,size);
    }
};
struct segtree_max{
    int size;
    vector<pll> maxs;
    void build(vector<ll> &a,int x,int lx,int rx){
        if(rx-lx==1){
            if(lx<(int)a.size()){
                maxs[x]=mp(a[lx],lx);
            }
            return;
        }
        int m=(lx+rx)/2;
        build(a,2*x+1,lx,m);
        build(a,2*x+2,m,rx);
        maxs[x]=max(maxs[2*x+1],maxs[2*x+2]);
    }
    void build(vector<ll> &a){
        build(a,0,0,size);
    }
    void init(int n){
        size=1;
        while(size<n){
            size*=2;
        }
        maxs.assign(2*size,mp(0,0));
    }
    pll get_max(int l,int r,int x,int lx,int rx){
        if(lx>=r || rx<=l){
            return mp(0,0);
        }
        if(lx>=l && rx<=r){
            return maxs[x];
        }
        pll s1,s2;
        int m=(lx+rx)/2;
        s1=get_max(l,r,2*x+1,lx,m);
        s2=get_max(l,r,2*x+2,m,rx);
        return max(s1,s2);
    }
    pll get_max(int l,int r){
        return get_max(l,r,0,0,size);
    }
    void set(int i,int v,int x,int lx,int rx){
        if(rx-lx==1){
            maxs[x]=mp(v,i);
            return;
        }
        int m=(lx+rx)/2;
        if(i<m){
            set(i,v,2*x+1,lx,m);
        }
        else{
            set(i,v,2*x+2,m,rx);
        }
        maxs[x]=max(maxs[2*x+1],maxs[2*x+2]);
    }
    void set(int i,int v){
        set(i,v,0,0,size);
    }
};
segtree_mul st_mul;
segtree_max st_max;
set<ll> b;
int init(int N, int X[], int Y[]) {
	n=N;
	X1.resize(n); 
	Y1.resize(n);
	b.ins(-1);
	for(int i=0;i<N;i++){
		if(X[i]!=1){
			b.ins(i);
		}
		X1[i]=X[i]; 
		Y1[i]=Y[i];
	}
	st_mul.init(n);
	st_mul.build(X1);
	st_max.init(n); 
	st_max.build(Y1);
	ll h=n-1; 
	ll cnt=0;
	vector<ll> a;
	while(h>=0){
		if(X1[h]==1){
			auto it=b.upper_bound(h); 
			--it; 
			pll p=st_max.get_max(*it+1,h+1);
			a.pb(p.ss);
			h=*it+1;
		}
		else{
			a.pb(h);
		}
		h--;
		cnt++; 
		if(cnt==60){
			break;
		}
	}
	reverse(all(a)); 
	ll sz=(ll)a.size();
	ll h1=1; 
	ll ind=0;
	for(int i=1;i<sz;i++){
		if(h1>MOD/X1[a[i]]){
			h1=MOD;
		}
		else{
			h1*=X1[a[i]];
		}
		if(h1>Y1[a[ind]]/Y1[a[i]]){
			ind=i;
			h1=1;
		}
	}
	ll res1=st_mul.mul(0,a[ind]+1)*Y1[a[ind]];
	res1%=MOD;
	return res1;
}
int updateX(int pos, int val) {
	st_mul.set(pos,val);
	if(X1[pos]==1 && val!=1){
		b.ins(pos);
	}
	else if(val==1){
		b.erase(pos);
	}
	X1[pos]=val;
	ll h=n-1; 
	ll cnt=0;
	vector<ll> a;
	while(h>=0){
		if(X1[h]==1){
			auto it=b.upper_bound(h); 
			--it; 
			pll p=st_max.get_max(*it+1,h+1);
			a.pb(p.ss);
			h=*it+1;
		}
		else{
			a.pb(h);
		}
		h--;
		cnt++; 
		if(cnt==60){
			break;
		}
	}
	reverse(all(a));
	ll sz=(ll)a.size();
	ll h1=1; 
	ll ind=0;
	for(int i=1;i<sz;i++){
		if(h1>MOD/X1[a[i]]){
			h1=MOD;
		}
		else{
			h1*=X1[a[i]];
		}
		if(h1>Y1[a[ind]]/Y1[a[i]]){
			ind=i;
			h1=1;
		}
	}
	ll res1=st_mul.mul(0,a[ind]+1)*Y1[a[ind]];
	res1%=MOD;
	return res1;
}

int updateY(int pos, int val){
	st_max.set(pos,val);
	Y1[pos]=val;
	ll h=n-1; 
	ll cnt=0;
	vector<ll> a;
	while(h>=0){
		if(X1[h]==1){
			auto it=b.upper_bound(h); 
			--it; 
			pll p=st_max.get_max(*it+1,h+1);
			a.pb(p.ss);
			h=*it+1;
		}
		else{
			a.pb(h);
		}
		h--;
		cnt++; 
		if(cnt==60){
			break;
		}
	}
	reverse(all(a)); 
	ll sz=(ll)a.size();
	ll h1=1; 
	ll ind=0;
	for(int i=1;i<sz;i++){
		if(h1>MOD/X1[a[i]]){
			h1=MOD;
		}
		else{
			h1*=X1[a[i]];
		}
		if(h1>Y1[a[ind]]/Y1[a[i]]){
			ind=i;
			h1=1;
		}
	}
	ll res1=st_mul.mul(0,a[ind]+1)*Y1[a[ind]];
	res1%=MOD;
	return res1;
}
/*
int X[MAX],Y[MAX],m,x,y,z;
int main(){
	cin >> n; 
	for(int i=0;i<n;i++){
		cin >> X[i]; 
	}
	for(int i=0;i<n;i++){
		cin >> Y[i];
	}
	cout << init(n,X,Y) << "\n";
	cin >> m; 
	for(int i=0;i<m;i++){
		if(i==1){
			ok=true;
		}
		else{
			ok=false;
		}
		cin >> x >> y >> z; 
		if(x==1){
			cout << updateX(y,z) << "\n";
		}
		else{
			cout << updateY(y,z) << "\n";
		}
	}
}
*/

Compilation message

horses.cpp: In member function 'void segtree_mul::init(int)':
horses.cpp:77:19: warning: declaration of 'n' shadows a global declaration [-Wshadow]
   77 |     void init(int n){
      |               ~~~~^
horses.cpp:55:5: note: shadowed declaration is here
   55 | int n;
      |     ^
horses.cpp: In member function 'void segtree_max::init(int)':
horses.cpp:137:19: warning: declaration of 'n' shadows a global declaration [-Wshadow]
  137 |     void init(int n){
      |               ~~~~^
horses.cpp:55:5: note: shadowed declaration is here
   55 | int n;
      |     ^
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:204:28: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  204 |    pll p=st_max.get_max(*it+1,h+1);
      |                         ~~~^~
horses.cpp:204:32: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  204 |    pll p=st_max.get_max(*it+1,h+1);
      |                               ~^~
horses.cpp:233:29: warning: conversion from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' may change value [-Wconversion]
  233 |  ll res1=st_mul.mul(0,a[ind]+1)*Y1[a[ind]];
horses.cpp:235:9: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  235 |  return res1;
      |         ^~~~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:253:28: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  253 |    pll p=st_max.get_max(*it+1,h+1);
      |                         ~~~^~
horses.cpp:253:32: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  253 |    pll p=st_max.get_max(*it+1,h+1);
      |                               ~^~
horses.cpp:282:29: warning: conversion from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' may change value [-Wconversion]
  282 |  ll res1=st_mul.mul(0,a[ind]+1)*Y1[a[ind]];
horses.cpp:284:9: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  284 |  return res1;
      |         ^~~~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:297:28: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  297 |    pll p=st_max.get_max(*it+1,h+1);
      |                         ~~~^~
horses.cpp:297:32: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  297 |    pll p=st_max.get_max(*it+1,h+1);
      |                               ~^~
horses.cpp:326:29: warning: conversion from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' may change value [-Wconversion]
  326 |  ll res1=st_mul.mul(0,a[ind]+1)*Y1[a[ind]];
horses.cpp:328:9: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  328 |  return res1;
      |         ^~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 4 ms 348 KB Output is correct
24 Correct 2 ms 348 KB Output is correct
25 Correct 2 ms 348 KB Output is correct
26 Correct 2 ms 348 KB Output is correct
27 Correct 3 ms 348 KB Output is correct
28 Correct 3 ms 600 KB Output is correct
29 Correct 1 ms 524 KB Output is correct
30 Correct 2 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 4 ms 348 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 254 ms 61456 KB Output is correct
2 Correct 267 ms 61264 KB Output is correct
3 Correct 280 ms 61200 KB Output is correct
4 Correct 274 ms 61264 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 4 ms 348 KB Output is correct
24 Correct 2 ms 348 KB Output is correct
25 Correct 2 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 5 ms 348 KB Output is correct
28 Correct 4 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 2 ms 452 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 4 ms 344 KB Output is correct
33 Correct 92 ms 40784 KB Output is correct
34 Correct 56 ms 40784 KB Output is correct
35 Correct 158 ms 71268 KB Output is correct
36 Correct 153 ms 71180 KB Output is correct
37 Correct 86 ms 38996 KB Output is correct
38 Correct 111 ms 51788 KB Output is correct
39 Correct 32 ms 38928 KB Output is correct
40 Correct 137 ms 66192 KB Output is correct
41 Correct 29 ms 38736 KB Output is correct
42 Correct 64 ms 38800 KB Output is correct
43 Correct 124 ms 66640 KB Output is correct
44 Correct 124 ms 66640 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 600 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 4 ms 516 KB Output is correct
24 Correct 2 ms 348 KB Output is correct
25 Correct 2 ms 348 KB Output is correct
26 Correct 1 ms 600 KB Output is correct
27 Correct 4 ms 348 KB Output is correct
28 Correct 3 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 2 ms 348 KB Output is correct
31 Correct 2 ms 348 KB Output is correct
32 Correct 4 ms 348 KB Output is correct
33 Correct 254 ms 64892 KB Output is correct
34 Correct 270 ms 73812 KB Output is correct
35 Correct 285 ms 65072 KB Output is correct
36 Correct 274 ms 68772 KB Output is correct
37 Correct 91 ms 40876 KB Output is correct
38 Correct 45 ms 40788 KB Output is correct
39 Correct 157 ms 71100 KB Output is correct
40 Correct 154 ms 70988 KB Output is correct
41 Correct 83 ms 39012 KB Output is correct
42 Correct 110 ms 51852 KB Output is correct
43 Correct 35 ms 38740 KB Output is correct
44 Correct 137 ms 66128 KB Output is correct
45 Correct 31 ms 38924 KB Output is correct
46 Correct 65 ms 38992 KB Output is correct
47 Correct 128 ms 66600 KB Output is correct
48 Correct 126 ms 66660 KB Output is correct
49 Correct 597 ms 44116 KB Output is correct
50 Correct 193 ms 43840 KB Output is correct
51 Correct 320 ms 72984 KB Output is correct
52 Correct 272 ms 72452 KB Output is correct
53 Correct 587 ms 42064 KB Output is correct
54 Correct 494 ms 55588 KB Output is correct
55 Correct 122 ms 39764 KB Output is correct
56 Correct 284 ms 68176 KB Output is correct
57 Correct 107 ms 40536 KB Output is correct
58 Correct 450 ms 41028 KB Output is correct
59 Correct 128 ms 66424 KB Output is correct