Submission #830356

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
830356	2023-08-19T04:22:51 Z	Supersonic	Horses (IOI15_horses)	C++14	37 / 100	280 ms	44668 KB

horses

#include "horses.h"
#include <bits/stdc++.h>
using namespace std;
typedef unsigned long long ll;
ll h[500001];
ll x[500001];
ll y[500001];
bool subtask3=1;
int n;
set<int, greater<int>> g1;
ll tree[1048577];
void modify(int k, int x) {
	k += n;
	tree[k] = x;
	for (k /= 2; k >= 1; k /= 2) {
		tree[k] = tree[2*k]*tree[2*k+1];
		tree[k]%=((ll)1e9+7);
	}
}
 
ll prod(ll a, ll b) {
	a += n; b += n;
	ll s = 1;
	while (a <= b) {
		if (a%2 == 1) {s *= tree[a++];s%=((ll)1e9+7);}
		if (b%2 == 0) {s *= tree[b--];s%=((ll)1e9+7);}
		a /= 2; b /= 2;
	}
	return s;
}
 
int init(int N, int X[], int Y[]) {
	n=N;
	if(n<=1000)subtask3=0;
	for(int i=0;i<n;i++){
		x[i]=X[i];
		if(x[i]<2)subtask3=0;
		modify(i,x[i]);
		y[i]=Y[i];
		if(x[i]>1)g1.insert(i);
	}
	//if(subtask3)exit(1);
	//cout<<prod(0,2)<<endl;;
	if(!subtask3){
		ll mp=0;ll c=1;
		for(int i=1;i<n;i++){
			c*=x[i];
			if(c>y[mp]||y[i]>y[mp]||c*y[i]>y[mp]){mp=i;c=1;}
		}
		return (prod(0,mp)*y[mp])%((ll)1e9+7);
	}
	else{
		ll mp=n-33;ll c=1;
		for(int i=n-32;i<n;i++){
			c*=x[i];
			if(c>y[mp]||y[i]>y[mp]||c*y[i]>y[mp]){mp=i;c=1;}
		}
		return (prod(0,mp)*y[mp])%((ll)1e9+7);
	}
}
 
int updateX(int pos, int val) {	
	if(val==1&&g1.count(pos))g1.erase(pos);
	if(val>1)g1.insert(pos);

		x[pos]=val;
		modify(pos,val);
		/*ll mp=n-33;ll c=1;
		for(int i=n-32;i<n;i++){
			c*=x[i];
			if(c>y[mp]||y[i]>y[mp]||c*y[i]>y[mp]){mp=i;c=1;}
		}*/
		ll c=x[0];ll mp=0;
		vector<int> vv;int cn=34;
		for(auto i:g1){vv.push_back(i);cn--;if(cn==0)break;}
		reverse(vv.begin(),vv.end());
		for(auto i:vv){
			c*=x[i];
			if(c>y[mp]||y[i]>y[mp]||c*y[i]>y[mp]){mp=i;c=1;}
		}
		return (prod(0,mp)*y[mp])%((ll)1e9+7);
	
}
 
int updateY(int pos, int val) {
		y[pos]=val;
		/*ll mp=33;ll c=1;
		for(int i=n-32;i<n;i++){
			c*=x[i];
			if(c>y[mp]||y[i]>y[mp]||c*y[i]>y[mp]){mp=i;c=1;}
		}*/
		ll c=x[0];ll mp=0;
		vector<int> vv;int cn=34;
		for(auto i:g1){vv.push_back(i);cn--;if(cn==0)break;}
		reverse(vv.begin(),vv.end());
		for(auto i:vv){
			c*=x[i];
			if(c>y[mp]||y[i]>y[mp]||c*y[i]>y[mp]){mp=i;c=1;}
		}
		return (prod(0,mp)*y[mp])%((ll)1e9+7);
}

Compilation message

horses.cpp: In function 'void modify(int, int)':
horses.cpp:12:24: warning: declaration of 'x' shadows a global declaration [-Wshadow]
   12 | void modify(int k, int x) {
      |                    ~~~~^
horses.cpp:6:4: note: shadowed declaration is here
    6 | ll x[500001];
      |    ^
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:38:15: warning: conversion from 'll' {aka 'long long unsigned int'} to 'int' may change value [-Wconversion]
   38 |   modify(i,x[i]);
      |            ~~~^
horses.cpp:50:28: warning: conversion from 'll' {aka 'long long unsigned int'} to 'int' may change value [-Wconversion]
   50 |   return (prod(0,mp)*y[mp])%((ll)1e9+7);
      |          ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
horses.cpp:58:28: warning: conversion from 'll' {aka 'long long unsigned int'} to 'int' may change value [-Wconversion]
   58 |   return (prod(0,mp)*y[mp])%((ll)1e9+7);
      |          ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:81:28: warning: conversion from 'll' {aka 'long long unsigned int'} to 'int' may change value [-Wconversion]
   81 |   return (prod(0,mp)*y[mp])%((ll)1e9+7);
      |          ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:100:28: warning: conversion from 'll' {aka 'long long unsigned int'} to 'int' may change value [-Wconversion]
  100 |   return (prod(0,mp)*y[mp])%((ll)1e9+7);
      |          ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~

Subtask #1
17.0 / 17.0

#	Verdict	Memory	Grader output
1	Correct	212 KB	Output is correct
2	Correct	232 KB	Output is correct
3	Correct	212 KB	Output is correct
4	Correct	212 KB	Output is correct
5	Correct	256 KB	Output is correct
6	Correct	212 KB	Output is correct
7	Correct	212 KB	Output is correct
8	Correct	212 KB	Output is correct
9	Correct	212 KB	Output is correct
10	Correct	224 KB	Output is correct
11	Correct	212 KB	Output is correct
12	Correct	212 KB	Output is correct
13	Correct	212 KB	Output is correct
14	Correct	212 KB	Output is correct
15	Correct	212 KB	Output is correct
16	Correct	212 KB	Output is correct
17	Correct	212 KB	Output is correct
18	Correct	212 KB	Output is correct
19	Correct	212 KB	Output is correct
20	Correct	212 KB	Output is correct

Subtask #2
0 / 17.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	1 ms	212 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Incorrect	0 ms	212 KB	Output isn't correct
22	Halted	0 ms	0 KB	-

Subtask #3
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	198 ms	44240 KB	Output is correct
2	Correct	266 ms	44236 KB	Output is correct
3	Correct	250 ms	44668 KB	Output is correct
4	Correct	280 ms	44236 KB	Output is correct

Subtask #4
0 / 23.0

#	Verdict	Memory	Grader output
1	Correct	212 KB	Output is correct
2	Correct	212 KB	Output is correct
3	Correct	212 KB	Output is correct
4	Correct	212 KB	Output is correct
5	Correct	212 KB	Output is correct
6	Correct	212 KB	Output is correct
7	Correct	212 KB	Output is correct
8	Correct	212 KB	Output is correct
9	Correct	212 KB	Output is correct
10	Correct	212 KB	Output is correct
11	Correct	212 KB	Output is correct
12	Correct	212 KB	Output is correct
13	Correct	212 KB	Output is correct
14	Correct	212 KB	Output is correct
15	Correct	212 KB	Output is correct
16	Correct	212 KB	Output is correct
17	Correct	212 KB	Output is correct
18	Correct	212 KB	Output is correct
19	Correct	212 KB	Output is correct
20	Correct	212 KB	Output is correct
21	Incorrect	212 KB	Output isn't correct
22	Halted	0 KB	-

Subtask #5
0 / 23.0

#	Verdict	Memory	Grader output
1	Correct	212 KB	Output is correct
2	Correct	212 KB	Output is correct
3	Correct	212 KB	Output is correct
4	Correct	212 KB	Output is correct
5	Correct	212 KB	Output is correct
6	Correct	212 KB	Output is correct
7	Correct	212 KB	Output is correct
8	Correct	212 KB	Output is correct
9	Correct	212 KB	Output is correct
10	Correct	212 KB	Output is correct
11	Correct	340 KB	Output is correct
12	Correct	212 KB	Output is correct
13	Correct	212 KB	Output is correct
14	Correct	212 KB	Output is correct
15	Correct	212 KB	Output is correct
16	Correct	212 KB	Output is correct
17	Correct	212 KB	Output is correct
18	Correct	212 KB	Output is correct
19	Correct	212 KB	Output is correct
20	Correct	212 KB	Output is correct
21	Incorrect	212 KB	Output isn't correct
22	Halted	0 KB	-

Submission #830356

Compilation message

Subtask #1 17.0 / 17.0

Subtask #2 0 / 17.0

Subtask #3 20.0 / 20.0

Subtask #4 0 / 23.0

Subtask #5 0 / 23.0

Subtask #1
17.0 / 17.0

Subtask #2
0 / 17.0

Subtask #3
20.0 / 20.0

Subtask #4
0 / 23.0

Subtask #5
0 / 23.0