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답안 #603321

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
603321 2022-07-24T01:59:58 Z chirathnirodha 말 (IOI15_horses) C++17
100 / 100
 609 ms 80400 KB 
#include "horses.h"
#include<bits/stdc++.h>
using namespace std;
#define PB push_back
#define MP make_pair
#define P push
#define I insert
#define F first
#define S second
typedef long long ll;
const ll mod=1e9+7;
const int maxn=500000;
int n;
ll segx[4*maxn],segy[4*maxn];
ll co[maxn],pr[maxn];
set<int> notone;
void updx(ll a,ll b,int c,ll x,int y){
	if(a==b){
		segx[c]=x;
		return;
	}
	ll m=(a+b)/2;
	if(y<=m)updx(a,m,2*c,x,y);
	else updx(m+1,b,2*c+1,x,y);
	segx[c]=(segx[2*c]*segx[2*c+1])%mod;
}
ll findx(ll a,ll b,ll c,ll x,ll y){
	if(a==x && b==y)return segx[c];
	ll m=(a+b)/2;
	if(y<=m)return findx(a,m,2*c,x,y);
	if(x>=m+1)return findx(m+1,b,2*c+1,x,y);
	return (findx(a,m,2*c,x,m)*findx(m+1,b,2*c+1,m+1,y))%mod;
}
void updy(ll a,ll b,int c,ll x,int y){
	if(a==b){
		segy[c]=x;
		return;
	}
	ll m=(a+b)/2;
	if(y<=m)updy(a,m,2*c,x,y);
	else updy(m+1,b,2*c+1,x,y);
	segy[c]=max(segy[2*c],segy[2*c+1]);
}
ll findy(ll a,ll b,ll c,ll x,ll y){
	if(a==x && b==y)return segy[c];
	ll m=(a+b)/2;
	if(y<=m)return findy(a,m,2*c,x,y);
	if(x>=m+1)return findy(m+1,b,2*c+1,x,y);
	return max(findy(a,m,2*c,x,m),findy(m+1,b,2*c+1,m+1,y));
}
int func(){
	auto itr=notone.end();itr--;
	int last=*itr;itr--;
	vector<pair<ll,ll> > v;
	while(true){
		if(v.size()>=80)break;
		int cur=*itr;
		if(cur+1!=last)v.PB(MP(last-1,findy(0,n-1,1,cur+1,last-1)));
		if(cur==-1)break;
		v.PB(MP(cur,pr[cur]));
		last=cur;
		itr--;
	}
	reverse(v.begin(),v.end());
	int cmax=0;
	ll mul=1;
	for(int i=1;i<v.size();i++){
		mul*=co[v[i].F];
		if(mul*v[i].S>v[cmax].S){
			cmax=i;
			mul=1;
		}
	}
	ll ans=v[cmax].S;
	ans=v[cmax].S*findx(0,n-1,1,0,v[cmax].F);
	ans%=mod;
	return ans;
}
int init(int N, int X[], int Y[]) {
	n=N;
	for(int i=0;i<4*n;i++){segx[i]=1;segy[i]=0;}
	for(int i=0;i<n;i++){
		co[i]=X[i];
		pr[i]=Y[i];
		updy(0,n-1,1,Y[i],i);
		updx(0,n-1,1,X[i],i);
	}
	notone.I(-1);notone.I(n);
	for(int i=0;i<n;i++)if(X[i]!=1)notone.I(i);
	return func();
}

int updateX(int pos, int val) {	
	updx(0,n-1,1,val,pos);
	co[pos]=val;
	if(val==1)notone.erase(pos);
	else notone.I(pos);
	return func();
}

int updateY(int pos, int val) {
	updy(0,n-1,1,val,pos);
	pr[pos]=val;
	return func();
}

Compilation message

horses.cpp: In function 'int func()':
horses.cpp:67:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |  for(int i=1;i<v.size();i++){
      |              ~^~~~~~~~~
horses.cpp:77:9: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   77 |  return ans;
      |         ^~~

Subtask #1
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 304 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 308 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 312 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct

Subtask #2
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 304 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 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 340 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 3 ms 452 KB Output is correct
24 Correct 3 ms 448 KB Output is correct
25 Correct 3 ms 468 KB Output is correct
26 Correct 3 ms 468 KB Output is correct
27 Correct 4 ms 340 KB Output is correct
28 Correct 3 ms 468 KB Output is correct
29 Correct 2 ms 340 KB Output is correct
30 Correct 3 ms 488 KB Output is correct
31 Correct 2 ms 448 KB Output is correct
32 Correct 2 ms 340 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 451 ms 71308 KB Output is correct
2 Correct 596 ms 80304 KB Output is correct
3 Correct 517 ms 71684 KB Output is correct
4 Correct 609 ms 75476 KB Output is correct

Subtask #4
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 312 KB Output is correct
2 Correct 1 ms 308 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 304 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 308 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 308 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 304 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 3 ms 340 KB Output is correct
24 Correct 2 ms 452 KB Output is correct
25 Correct 3 ms 468 KB Output is correct
26 Correct 3 ms 468 KB Output is correct
27 Correct 3 ms 340 KB Output is correct
28 Correct 2 ms 468 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 3 ms 468 KB Output is correct
31 Correct 2 ms 340 KB Output is correct
32 Correct 4 ms 444 KB Output is correct
33 Correct 251 ms 47384 KB Output is correct
34 Correct 204 ms 47376 KB Output is correct
35 Correct 380 ms 77716 KB Output is correct
36 Correct 362 ms 77672 KB Output is correct
37 Correct 218 ms 45644 KB Output is correct
38 Correct 253 ms 58368 KB Output is correct
39 Correct 179 ms 45400 KB Output is correct
40 Correct 407 ms 72768 KB Output is correct
41 Correct 182 ms 45404 KB Output is correct
42 Correct 197 ms 45432 KB Output is correct
43 Correct 354 ms 73240 KB Output is correct
44 Correct 329 ms 73144 KB Output is correct

Subtask #5
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 308 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 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 1 ms 304 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 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 Correct 1 ms 308 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 4 ms 340 KB Output is correct
24 Correct 3 ms 448 KB Output is correct
25 Correct 3 ms 468 KB Output is correct
26 Correct 2 ms 468 KB Output is correct
27 Correct 3 ms 340 KB Output is correct
28 Correct 3 ms 468 KB Output is correct
29 Correct 2 ms 340 KB Output is correct
30 Correct 3 ms 468 KB Output is correct
31 Correct 2 ms 340 KB Output is correct
32 Correct 2 ms 340 KB Output is correct
33 Correct 513 ms 71608 KB Output is correct
34 Correct 606 ms 80400 KB Output is correct
35 Correct 562 ms 71588 KB Output is correct
36 Correct 599 ms 75444 KB Output is correct
37 Correct 236 ms 47480 KB Output is correct
38 Correct 214 ms 47512 KB Output is correct
39 Correct 358 ms 77788 KB Output is correct
40 Correct 379 ms 77716 KB Output is correct
41 Correct 269 ms 45624 KB Output is correct
42 Correct 262 ms 58336 KB Output is correct
43 Correct 183 ms 45360 KB Output is correct
44 Correct 369 ms 72880 KB Output is correct
45 Correct 181 ms 45520 KB Output is correct
46 Correct 192 ms 45528 KB Output is correct
47 Correct 364 ms 73204 KB Output is correct
48 Correct 306 ms 73196 KB Output is correct
49 Correct 596 ms 50608 KB Output is correct
50 Correct 450 ms 50380 KB Output is correct
51 Correct 529 ms 79564 KB Output is correct
52 Correct 508 ms 79160 KB Output is correct
53 Correct 586 ms 48820 KB Output is correct
54 Correct 457 ms 62440 KB Output is correct
55 Correct 271 ms 46416 KB Output is correct
56 Correct 555 ms 74588 KB Output is correct
57 Correct 275 ms 47076 KB Output is correct
58 Correct 390 ms 47552 KB Output is correct
59 Correct 326 ms 73140 KB Output is correct