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답안 #1036548

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1036548 2024-07-27T13:47:22 Z vjudge1 말 (IOI15_horses) C++17
100 / 100
 436 ms 49668 KB 
#include "horses.h"

#include <bits/stdc++.h>
using namespace std;

using lint=long long;

const lint mod=1e9+7;
const int lim=5e5+100;
const int inf=1e9;

int mul(lint i,lint j){
	return i*j%mod;
}

int n,*x,*y;

struct{
	int tree[4*lim];
	int P,VAL;
	int update(int l,int r,int node){
		if(l==r){
			return tree[node]=VAL;
		}
		int mid=(l+r)>>1,child=node<<1;
		if(P<=mid)return tree[node]=mul(update(l,mid,child),tree[child|1]);
		return tree[node]=mul(tree[child],update(mid+1,r,child|1));
	}
	void update(int p,int val){
		P=p,VAL=val;
		update(0,n-1,1);
	}
	int query(int l,int r,int node){
		if(r<=P){
			return tree[node];
		}
		int mid=(l+r)>>1,child=node<<1;
		if(P<=mid)return query(l,mid,child);
		return mul(tree[child],query(mid+1,r,child|1));
	}
	int query(int p){
		P=p;
		return query(0,n-1,1);
	}
}stmul;

struct{
	int tree[4*lim];
	int P,VAL;
	int update(int l,int r,int node){
		if(l==r)return tree[node]=VAL;
		int mid=(l+r)>>1,child=node<<1;
		if(P<=mid)return tree[node]=max(update(l,mid,child),tree[child|1]);
		return tree[node]=max(tree[child],update(mid+1,r,child|1));
	}
	void update(int p,int val){
		P=p,VAL=val;
		update(0,n-1,1);
	}
	int L,R;
	int query(int l,int r,int node){
		if(L<=l&&r<=R)return tree[node];
		if(r<L||R<l)return 0;
		int mid=(l+r)>>1,child=node<<1;
		return max(query(l,mid,child),query(mid+1,r,child|1));
	}
	int query(int l,int r){
		L=l,R=r;
		return query(0,n-1,1);
	}
}stmax;

set<int,greater<int>>nonones;

int findmax(){
	if(*nonones.begin()==-1)return stmax.query(0,n-1);
	lint past=*nonones.begin(),aa=stmax.query(past,n-1),bb=stmul.query(past);
	lint curbest=mul(aa,bb),temp=aa*x[past];
	if(inf<temp)return curbest;
	for(auto p=next(nonones.begin());p!=nonones.end();p++){
		int pp=*p;
		if(pp==-1){
			if(past==0)break;
			pp=0;
		}
		aa=stmax.query(pp,past-1);
		if(temp<aa){
			bb=stmul.query(pp);
			curbest=mul(aa,bb);
			temp=aa;
		}
		temp*=x[pp];
		if(inf<temp)return curbest;
		past=pp;
	}
	return curbest;
}

int init(int N, int X[], int Y[]) {
	n=N,x=X,y=Y;
	nonones.insert(-1);
	for(int i=0;i<n;i++){
		stmul.update(i,x[i]);
		stmax.update(i,y[i]);
		if(X[i]!=1)nonones.insert(i);
	}
	return findmax();
}

int updateX(int pos, int val) {	
	if(x[pos]!=1)nonones.erase(pos);
	x[pos]=val;
	stmul.update(pos,val);
	if(x[pos]!=1)nonones.insert(pos);
	return findmax();
}

int updateY(int pos, int val) {
	stmax.update(pos,val);
	return findmax();
}

Compilation message

horses.cpp: In function 'int mul(lint, lint)':
horses.cpp:13:12: warning: conversion from 'lint' {aka 'long long int'} to 'int' may change value [-Wconversion]
   13 |  return i*j%mod;
      |         ~~~^~~~
horses.cpp: In function 'int findmax()':
horses.cpp:77:44: warning: conversion from 'lint' {aka 'long long int'} to 'int' may change value [-Wconversion]
   77 |  lint past=*nonones.begin(),aa=stmax.query(past,n-1),bb=stmul.query(past);
      |                                            ^~~~
horses.cpp:77:69: warning: conversion from 'lint' {aka 'long long int'} to 'int' may change value [-Wconversion]
   77 |  lint past=*nonones.begin(),aa=stmax.query(past,n-1),bb=stmul.query(past);
      |                                                                     ^~~~
horses.cpp:79:21: warning: conversion from 'lint' {aka 'long long int'} to 'int' may change value [-Wconversion]
   79 |  if(inf<temp)return curbest;
      |                     ^~~~~~~
horses.cpp:86:25: warning: conversion from 'lint' {aka 'long long int'} to 'int' may change value [-Wconversion]
   86 |   aa=stmax.query(pp,past-1);
      |                     ~~~~^~
horses.cpp:93:22: warning: conversion from 'lint' {aka 'long long int'} to 'int' may change value [-Wconversion]
   93 |   if(inf<temp)return curbest;
      |                      ^~~~~~~
horses.cpp:96:9: warning: conversion from 'lint' {aka 'long long int'} to 'int' may change value [-Wconversion]
   96 |  return curbest;
      |         ^~~~~~~

Subtask #1
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 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 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 2396 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 2396 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 2396 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 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 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 2396 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 2396 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 400 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 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 460 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 2 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 556 KB Output is correct
31 Correct 1 ms 500 KB Output is correct
32 Correct 2 ms 488 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 382 ms 37204 KB Output is correct
2 Correct 330 ms 37148 KB Output is correct
3 Correct 274 ms 40788 KB Output is correct
4 Correct 341 ms 44624 KB Output is correct

Subtask #4
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 2396 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 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 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 2396 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 344 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 520 KB Output is correct
27 Correct 2 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 1 ms 348 KB Output is correct
32 Correct 2 ms 348 KB Output is correct
33 Correct 103 ms 16688 KB Output is correct
34 Correct 102 ms 16784 KB Output is correct
35 Correct 209 ms 46928 KB Output is correct
36 Correct 218 ms 46924 KB Output is correct
37 Correct 151 ms 14932 KB Output is correct
38 Correct 149 ms 27732 KB Output is correct
39 Correct 96 ms 14672 KB Output is correct
40 Correct 214 ms 42200 KB Output is correct
41 Correct 106 ms 14676 KB Output is correct
42 Correct 115 ms 14672 KB Output is correct
43 Correct 211 ms 42380 KB Output is correct
44 Correct 195 ms 42588 KB Output is correct

Subtask #5
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 2396 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 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 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 2396 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 1 ms 348 KB Output is correct
19 Correct 0 ms 600 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 464 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 2 ms 600 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 1 ms 348 KB Output is correct
32 Correct 2 ms 348 KB Output is correct
33 Correct 389 ms 41040 KB Output is correct
34 Correct 289 ms 49668 KB Output is correct
35 Correct 329 ms 40824 KB Output is correct
36 Correct 326 ms 44816 KB Output is correct
37 Correct 111 ms 16704 KB Output is correct
38 Correct 109 ms 16724 KB Output is correct
39 Correct 237 ms 46996 KB Output is correct
40 Correct 225 ms 47088 KB Output is correct
41 Correct 135 ms 14964 KB Output is correct
42 Correct 187 ms 27660 KB Output is correct
43 Correct 103 ms 14768 KB Output is correct
44 Correct 213 ms 42000 KB Output is correct
45 Correct 109 ms 14684 KB Output is correct
46 Correct 120 ms 14680 KB Output is correct
47 Correct 204 ms 42300 KB Output is correct
48 Correct 203 ms 42416 KB Output is correct
49 Correct 167 ms 19868 KB Output is correct
50 Correct 146 ms 19824 KB Output is correct
51 Correct 314 ms 48832 KB Output is correct
52 Correct 247 ms 48468 KB Output is correct
53 Correct 436 ms 17824 KB Output is correct
54 Correct 234 ms 31572 KB Output is correct
55 Correct 149 ms 15700 KB Output is correct
56 Correct 280 ms 44016 KB Output is correct
57 Correct 264 ms 16308 KB Output is correct
58 Correct 334 ms 16868 KB Output is correct
59 Correct 201 ms 42204 KB Output is correct