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답안 #1030286

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1030286 2024-07-22T02:13:52 Z pcc 말 (IOI15_horses) C++17
100 / 100
 466 ms 57684 KB 
#include "horses.h"
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pll pair<ll,ll>
#define fs first
#define sc second
const ll mod = 1e9+7;
const ll mxn = 5e5+10;

int N;
int arr[mxn],brr[mxn];
set<int> st;

struct SEG{
#define ls now*2+1
#define rs now*2+2
#define mid ((l+r)>>1)
	int mx[mxn*4];
	ll seg[mxn*4];
	void build(int now,int l,int r){
		if(l == r){
			seg[now] = arr[l];
			mx[now] = brr[l];
			return;
		}
		build(ls,l,mid);
		build(rs,mid+1,r);
		mx[now] = max(mx[ls],mx[rs]);
		seg[now] = seg[ls]*seg[rs];
		if(seg[now]>=mod)seg[now] = mod+seg[now]%mod;
		return;
	}
	void modify(int now,int l,int r,int p){
		if(l == r){
			seg[now] = arr[l];
			mx[now] = brr[l];
			return;
		}
		if(mid>=p)modify(ls,l,mid,p);
		else modify(rs,mid+1,r,p);
		mx[now] = max(mx[ls],mx[rs]);
		seg[now] = seg[ls]*seg[rs];
		if(seg[now]>=mod)seg[now] = mod+seg[now]%mod;
	}
	ll getsum(int now,int l,int r,int s,int e){
		if(l>=s&&e>=r)return seg[now];
		if(mid>=e)return getsum(ls,l,mid,s,e);
		else if(mid<s)return getsum(rs,mid+1,r,s,e);
		else{
			auto re = getsum(ls,l,mid,s,e)*getsum(rs,mid+1,r,s,e);
			if(re>=mod)return mod+re%mod;
			else return re;
		}
	}
	ll getmax(int now,int l,int r,int s,int e){
		if(l>=s&&e>=r)return mx[now];
		if(mid>=e)return getmax(ls,l,mid,s,e);
		else if(mid<s)return getmax(rs,mid+1,r,s,e);
		else return max(getmax(ls,l,mid,s,e),getmax(rs,mid+1,r,s,e));
	}
#undef ls
#undef rs
#undef mid
};

SEG seg;

bool cmp(int a,int b){
	if(a>b)return seg.getmax(0,0,N-1,a,N-1)*seg.getsum(0,0,N-1,b+1,a)<seg.getmax(0,0,N-1,b,N-1);
	else return seg.getmax(0,0,N-1,a,N-1)<seg.getmax(0,0,N-1,b,N-1)*seg.getsum(0,0,N-1,a+1,b);
}

ll getans(){
	st.insert(0);
	vector<int> need;
	ll pref = 1;
	for(auto it = st.rbegin();it != st.rend()&&pref<mod;it++){
		need.push_back(*it);
		pref *= arr[*it];
	}
	sort(need.begin(),need.end());
	int tar = need[0];
	for(int i = 1;i<need.size();i++){
		if(cmp(tar,need[i]))tar = need[i];
	}
	return seg.getmax(0,0,N-1,tar,N-1)*seg.getsum(0,0,N-1,0,tar)%mod;
}

int init(int NN, int X[], int Y[]) {
	N = NN;
	for(int i = 0;i<N;i++){
		arr[i] = X[i];
		if(arr[i] != 1)st.insert(i);
		brr[i] = Y[i];
	}
	seg.build(0,0,N-1);
	//cerr<<"INIT! "<<seg.getmax(0,0,N-1,0,N-1)<<endl;
	return getans();
}

int updateX(int pos, int val) {	
	arr[pos] = val;
	if(arr[pos] != 1)st.insert(pos);
	else if(arr[pos] == 1&&st.find(pos) != st.end())st.erase(pos);
	seg.modify(0,0,N-1,pos);
	return getans();
}

int updateY(int pos, int val) {
	brr[pos] = val;
	seg.modify(0,0,N-1,pos);
	return getans();
}

Compilation message

horses.cpp: In function 'long long int getans()':
horses.cpp:85:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   85 |  for(int i = 1;i<need.size();i++){
      |                ~^~~~~~~~~~~~
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:100:15: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  100 |  return getans();
      |         ~~~~~~^~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:108:15: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  108 |  return getans();
      |         ~~~~~~^~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:114:15: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  114 |  return getans();
      |         ~~~~~~^~

Subtask #1
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 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 456 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 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 1 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

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 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 452 KB Output is correct
13 Correct 1 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 344 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 460 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 464 KB Output is correct
27 Correct 3 ms 548 KB Output is correct
28 Correct 2 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 2 ms 344 KB Output is correct
32 Correct 3 ms 348 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 449 ms 48724 KB Output is correct
2 Correct 245 ms 57684 KB Output is correct
3 Correct 235 ms 48724 KB Output is correct
4 Correct 298 ms 52616 KB Output is correct

Subtask #4
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 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 348 KB Output is correct
5 Correct 0 ms 600 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 452 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 1 ms 344 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 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 3 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 2 ms 348 KB Output is correct
32 Correct 3 ms 348 KB Output is correct
33 Correct 40 ms 24660 KB Output is correct
34 Correct 33 ms 24640 KB Output is correct
35 Correct 156 ms 54856 KB Output is correct
36 Correct 150 ms 54780 KB Output is correct
37 Correct 66 ms 22868 KB Output is correct
38 Correct 95 ms 35684 KB Output is correct
39 Correct 24 ms 22620 KB Output is correct
40 Correct 132 ms 49952 KB Output is correct
41 Correct 56 ms 22620 KB Output is correct
42 Correct 69 ms 22880 KB Output is correct
43 Correct 125 ms 50256 KB Output is correct
44 Correct 127 ms 50260 KB Output is correct

Subtask #5
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 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 348 KB Output is correct
5 Correct 0 ms 456 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 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 344 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 452 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 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 3 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 2 ms 348 KB Output is correct
32 Correct 3 ms 348 KB Output is correct
33 Correct 466 ms 48848 KB Output is correct
34 Correct 243 ms 57500 KB Output is correct
35 Correct 276 ms 48820 KB Output is correct
36 Correct 274 ms 52592 KB Output is correct
37 Correct 33 ms 24656 KB Output is correct
38 Correct 33 ms 24660 KB Output is correct
39 Correct 152 ms 54992 KB Output is correct
40 Correct 148 ms 54844 KB Output is correct
41 Correct 60 ms 22868 KB Output is correct
42 Correct 79 ms 35668 KB Output is correct
43 Correct 25 ms 22608 KB Output is correct
44 Correct 128 ms 50040 KB Output is correct
45 Correct 60 ms 22620 KB Output is correct
46 Correct 61 ms 22748 KB Output is correct
47 Correct 132 ms 50252 KB Output is correct
48 Correct 127 ms 50312 KB Output is correct
49 Correct 124 ms 27728 KB Output is correct
50 Correct 93 ms 27752 KB Output is correct
51 Correct 262 ms 56752 KB Output is correct
52 Correct 206 ms 56400 KB Output is correct
53 Correct 434 ms 25856 KB Output is correct
54 Correct 218 ms 39428 KB Output is correct
55 Correct 87 ms 23744 KB Output is correct
56 Correct 197 ms 51792 KB Output is correct
57 Correct 416 ms 24148 KB Output is correct
58 Correct 461 ms 24744 KB Output is correct
59 Correct 142 ms 50372 KB Output is correct