Submission #597115

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
597115	2022-07-15T14:21:07 Z	Apiram	Horses (IOI15_horses)	C++14	17 / 100	1500 ms	27860 KB

horses

#include "horses.h"
#include <bits/stdc++.h>
using namespace std;
const int mod = 1e9 + 7;
struct dataa{
	long long v = 0;
	bool ok = 1;
	void add(long long val){
		v = val;
		//sum += val *(right - left + 1);
	}
};
long long S,T;
struct Segment_Tree{
	vector<dataa>tree;
	void build(long long node,long long left,long long right,vector<long long>&arr,long long n){
		if (left == right){
			tree[node].v  = arr[left];
			return ;
		}
		long long mid = (left + right)>>1;
		long long z = node + ((mid - left + 1)<<1);
		build(node + 1,left,mid,arr,n);
		build(z,mid + 1,right,arr,n);
		tree[node] = combine(tree[node + 1],tree[z]);
	}
	void init(long long n,vector<long long>&arr){
		tree.resize(2*n - 1);
		build(0,0,n-1,arr,n);
	}
	dataa combine(dataa left,dataa right){
		dataa res;
		res.v = (left.v * right.v)%mod;
		res.ok = left.ok & right.ok;
		if (res.ok){
			if (left.v * right.v > 1e9)res.ok = false;
		}
		return res;
	}
	dataa query(long long node,long long left,long long right,long long qleft,long long qright){
		if (qright<left|| qleft > right)return {1,1};
		if (qleft<=left && qright>=right){
			return tree[node];
		}
		long long mid = (left + right)>>1;
		long long z = node + ((mid - left + 1)<<1);
		return combine(query(node + 1,left,mid,qleft,qright),query(z,mid + 1,right,qleft,qright));
	}
	void update(long long node,long long left,long long right,long long uleft,long long uright,long long v){
		if (left > uright || right < uleft) return;
		if (uleft <= left && right <=uright){
			tree[node].add(v);
			return;
		}
		long long mid = (left + right)>>1;
		long long z = node + ((mid - left + 1)<<1);
		if (uleft<=mid){
			update(node + 1,left,mid,uleft,uright,v);
		}
		if (uright > mid){
			update(z,mid + 1,right,uleft,uright,v);
		}
		tree[node] = combine(tree[node + 1],tree[z]);
	}
};

vector<long long>x,y;
Segment_Tree st;
int solve(){
	int N = (int)x.size();
	int ans = 0;
	long long maxxy = y[N - 1],index = N - 1;
	auto temp = st.query(0,0,N - 1,0,N - 1);
	ans = (temp.v * y[N - 1])%mod;
	for (int i = N - 2;i>=0;--i){
		temp = st.query(0,0,N - 1,i + 1,index);
		bool ok = temp.ok;
		//cout<<temp<<" "<<Y[i - 1] / Y[index]<<" "<<i<<" "<<maxxy<<" "<<index<<'\n';
		if (y[i] > maxxy && (ok && temp.v * y[index] <= y[i])){
			maxxy = y[i];
			index = i;
			temp = st.query(0,0,N - 1,0,i);
			ans = (temp.v * y[i])%mod;
		}
	}
	return ans;
}
int init(int N, int X[], int Y[]) {
	for (int i = 0;i<N;++i){
		x.push_back(X[i]);
		y.push_back(Y[i]);
	}
	st.init(N,x);
	return solve();
}

int updateX(int pos, int val) {	
	x[pos] = val;
	return solve();
}

int updateY(int pos, int val) {
	y[pos] = val;
	return solve();
}

Compilation message

horses.cpp: In member function 'dataa Segment_Tree::combine(dataa, dataa)':
horses.cpp:36:15: warning: conversion from 'long long int' to 'double' may change value [-Wconversion]
   36 |    if (left.v * right.v > 1e9)res.ok = false;
      |        ~~~~~~~^~~~~~~~~
horses.cpp: In function 'int solve()':
horses.cpp:74:27: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   74 |  ans = (temp.v * y[N - 1])%mod;
      |        ~~~~~~~~~~~~~~~~~~~^~~~
horses.cpp:83:25: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   83 |    ans = (temp.v * y[i])%mod;
      |          ~~~~~~~~~~~~~~~^~~~

Subtask #1
17.0 / 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	1 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	1 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	1 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	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct

Subtask #2
0 / 17.0

#	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	272 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 #3
0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Execution timed out	1596 ms	27860 KB	Time limit exceeded
2	Halted	0 ms	0 KB	-

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	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	1 ms	212 KB	Output is correct
13	Correct	1 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	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Incorrect	0 ms	212 KB	Output isn't correct
22	Halted	0 ms	0 KB	-

Submission #597115

Compilation message

Subtask #1 17.0 / 17.0

Subtask #2 0 / 17.0

Subtask #3 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
0 / 20.0

Subtask #4
0 / 23.0

Subtask #5
0 / 23.0