oj.uz

답안 #399521

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
399521 2021-05-05T23:56:20 Z bigg 말 (IOI15_horses) C++14
100 / 100
 590 ms 106052 KB 
#include "horses.h"
#include<bits/stdc++.h>
using namespace std;

typedef long long ll;
const int MAXN = 5e5 + 10;
const ll MOD = 1e9 + 7;
#define esq(x) x << 1 
#define dir(x) (x<<1) | 1
#define mid(x,y,t) ((x+y)>>1) + t

ll Y[MAXN], X[MAXN];
int n;

struct nodeseg
{
	ll v, id, xm;
	bool flag;
	nodeseg(ll _v = 0, ll _id = 0, ll _xm = 0, bool f = 0){
		v = _v;
		id = _id;
		xm = _xm;
		flag = f;
	}
	nodeseg operator + (nodeseg b){
		if(flag && b.flag) return nodeseg(0,0,0,1);
		if(flag) return b;
		if(b.flag) return *this;
		nodeseg ans;
		if(v >= b.v){
			ans.id = id;
			ans.v = v;
		}else{
			ans.id = b.id;
			ans.v = b.v;
		}
		ans.xm = (xm * b.xm)%MOD;
		return ans;
	}
}seg[4*MAXN];

void build(int node, int x, int y){
	if(x == y){
		seg[node] = nodeseg(Y[x], x, X[x], 0);
		return;
	}
	build(esq(node), x, mid(x,y,0));
	build(dir(node), mid(x,y,1), y);
	seg[node] = seg[esq(node)] + seg[dir(node)];
}

void update(int node, int x, int y, int id, int t){
	if(x > id || y < id ) return;
	if(x == y){
		seg[node].v = Y[x];
		seg[node].xm = X[x];
		return;
	}
	if(id <= mid(x,y,0)) update(esq(node), x, mid(x,y,0), id, t);
	else update(dir(node), mid(x,y,1), y, id, t);
	seg[node] = seg[esq(node)] + seg[dir(node)];
}
nodeseg query(int node, int x, int y, int l, int r){
	if(x > r || y < l || y < x || r  < l) return nodeseg(0,-1,1,0);
	if(x >= l && y <= r) return seg[node];
	if(r <= mid(x,y,0)) return query(esq(node), x, mid(x,y,0), l, r);
	else if(l > mid(x,y,0)) return query(dir(node), mid(x,y,1), y, l, r);
	nodeseg e = query(esq(node), x, mid(x,y,0), l, r);
	nodeseg d = query(dir(node), mid(x,y,1), y, l, r);
	return e + d;
}

set<int> ids;

ll makeans(){
	if(ids.empty()) return (query(1,1,n,1,n).v)%MOD;
	set<int> :: iterator it = ids.end();
	it--;
	ll ans = 0, id = 0;
	int r = n;
	while(true){
		//printf("%d %d\n", r, *it);
		
		
		nodeseg q = query(1,1,n,*it,r);
		
		if(q.v >= ans) ans = q.v, id = q.id;
		
		ans *= X[*it];
		r = *it -1;
		//printf("%d %d\n", r, *it);
		if(it == ids.begin()) break;
		if(ans  > (ll) 1e9) break;
		
		it--;
		
	}
	//printf("%d\n", r);
	
	nodeseg q = query(1,1,n,1,r);
	if(q.v >= ans) ans = q.v, id = q.id;
	
	return (query(1,1,n,1,id).xm*Y[id])%MOD;
}

int init(int N, int x[], int y[]) {
	n = N;
	for(int i = 0; i < N; i++){
		X[i+1] = x[i];
		Y[i+1] = y[i];
		
	}
	build(1,1,n);
	for(int i = 1; i <= n; i++) if(X[i] >= 2) ids.insert(i);

	return makeans();
}

int updateX(int pos, int val) {

	pos++;
	if(X[pos] >= 2)ids.erase(pos);
	X[pos] = val;
	if(X[pos] >= 2) ids.insert(pos);
	update(1,1,n,pos,1);
	return makeans();
}

int updateY(int pos, int val) {
	pos++;
	Y[pos] = val;
	update(1,1,n,pos,0);
	return makeans();
	
}

Compilation message

horses.cpp: In function 'll makeans()':
horses.cpp:103:24: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  103 |  return (query(1,1,n,1,id).xm*Y[id])%MOD;
      |                        ^~
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:116:16: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  116 |  return makeans();
      |         ~~~~~~~^~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:126:16: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  126 |  return makeans();
      |         ~~~~~~~^~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:133:16: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  133 |  return makeans();
      |         ~~~~~~~^~

Subtask #1
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 62924 KB Output is correct
2 Correct 29 ms 62828 KB Output is correct
3 Correct 28 ms 62916 KB Output is correct
4 Correct 30 ms 62916 KB Output is correct
5 Correct 28 ms 62948 KB Output is correct
6 Correct 29 ms 62868 KB Output is correct
7 Correct 28 ms 62940 KB Output is correct
8 Correct 28 ms 62892 KB Output is correct
9 Correct 28 ms 62916 KB Output is correct
10 Correct 29 ms 62908 KB Output is correct
11 Correct 29 ms 62920 KB Output is correct
12 Correct 28 ms 62852 KB Output is correct
13 Correct 28 ms 62920 KB Output is correct
14 Correct 33 ms 62920 KB Output is correct
15 Correct 33 ms 62944 KB Output is correct
16 Correct 28 ms 62964 KB Output is correct
17 Correct 28 ms 62916 KB Output is correct
18 Correct 28 ms 62908 KB Output is correct
19 Correct 28 ms 62880 KB Output is correct
20 Correct 28 ms 62924 KB Output is correct

Subtask #2
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 32 ms 62856 KB Output is correct
2 Correct 33 ms 62844 KB Output is correct
3 Correct 30 ms 62892 KB Output is correct
4 Correct 28 ms 62916 KB Output is correct
5 Correct 29 ms 62872 KB Output is correct
6 Correct 28 ms 62868 KB Output is correct
7 Correct 28 ms 62924 KB Output is correct
8 Correct 28 ms 62928 KB Output is correct
9 Correct 29 ms 62916 KB Output is correct
10 Correct 29 ms 62892 KB Output is correct
11 Correct 29 ms 62824 KB Output is correct
12 Correct 28 ms 62868 KB Output is correct
13 Correct 28 ms 62924 KB Output is correct
14 Correct 28 ms 62816 KB Output is correct
15 Correct 29 ms 62896 KB Output is correct
16 Correct 28 ms 62924 KB Output is correct
17 Correct 29 ms 62872 KB Output is correct
18 Correct 30 ms 62920 KB Output is correct
19 Correct 33 ms 62916 KB Output is correct
20 Correct 28 ms 62928 KB Output is correct
21 Correct 29 ms 62808 KB Output is correct
22 Correct 28 ms 62908 KB Output is correct
23 Correct 28 ms 62932 KB Output is correct
24 Correct 29 ms 62876 KB Output is correct
25 Correct 29 ms 62916 KB Output is correct
26 Correct 29 ms 62920 KB Output is correct
27 Correct 31 ms 62916 KB Output is correct
28 Correct 29 ms 62896 KB Output is correct
29 Correct 30 ms 62824 KB Output is correct
30 Correct 30 ms 62956 KB Output is correct
31 Correct 29 ms 62924 KB Output is correct
32 Correct 31 ms 62924 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 479 ms 99192 KB Output is correct
2 Correct 387 ms 99140 KB Output is correct
3 Correct 400 ms 99032 KB Output is correct
4 Correct 441 ms 99012 KB Output is correct

Subtask #4
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 29 ms 62872 KB Output is correct
2 Correct 29 ms 62828 KB Output is correct
3 Correct 28 ms 62892 KB Output is correct
4 Correct 28 ms 62924 KB Output is correct
5 Correct 29 ms 62876 KB Output is correct
6 Correct 29 ms 62924 KB Output is correct
7 Correct 29 ms 62916 KB Output is correct
8 Correct 28 ms 62856 KB Output is correct
9 Correct 29 ms 62924 KB Output is correct
10 Correct 28 ms 62944 KB Output is correct
11 Correct 28 ms 62924 KB Output is correct
12 Correct 29 ms 62888 KB Output is correct
13 Correct 28 ms 62904 KB Output is correct
14 Correct 28 ms 62848 KB Output is correct
15 Correct 28 ms 62832 KB Output is correct
16 Correct 28 ms 62800 KB Output is correct
17 Correct 28 ms 62924 KB Output is correct
18 Correct 29 ms 62800 KB Output is correct
19 Correct 30 ms 62884 KB Output is correct
20 Correct 29 ms 62844 KB Output is correct
21 Correct 28 ms 62940 KB Output is correct
22 Correct 28 ms 62864 KB Output is correct
23 Correct 29 ms 62916 KB Output is correct
24 Correct 29 ms 62960 KB Output is correct
25 Correct 29 ms 62924 KB Output is correct
26 Correct 29 ms 63008 KB Output is correct
27 Correct 31 ms 62920 KB Output is correct
28 Correct 29 ms 62900 KB Output is correct
29 Correct 29 ms 62924 KB Output is correct
30 Correct 29 ms 62880 KB Output is correct
31 Correct 29 ms 62948 KB Output is correct
32 Correct 35 ms 62868 KB Output is correct
33 Correct 86 ms 74800 KB Output is correct
34 Correct 76 ms 74820 KB Output is correct
35 Correct 212 ms 98188 KB Output is correct
36 Correct 205 ms 98184 KB Output is correct
37 Correct 125 ms 74820 KB Output is correct
38 Correct 140 ms 86728 KB Output is correct
39 Correct 65 ms 74620 KB Output is correct
40 Correct 195 ms 98192 KB Output is correct
41 Correct 75 ms 74728 KB Output is correct
42 Correct 86 ms 74668 KB Output is correct
43 Correct 177 ms 98140 KB Output is correct
44 Correct 180 ms 98204 KB Output is correct

Subtask #5
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 30 ms 62924 KB Output is correct
2 Correct 29 ms 62924 KB Output is correct
3 Correct 33 ms 62844 KB Output is correct
4 Correct 29 ms 62908 KB Output is correct
5 Correct 28 ms 62840 KB Output is correct
6 Correct 28 ms 62884 KB Output is correct
7 Correct 28 ms 62924 KB Output is correct
8 Correct 28 ms 62924 KB Output is correct
9 Correct 28 ms 62896 KB Output is correct
10 Correct 28 ms 62892 KB Output is correct
11 Correct 28 ms 62888 KB Output is correct
12 Correct 28 ms 62924 KB Output is correct
13 Correct 28 ms 62884 KB Output is correct
14 Correct 28 ms 62904 KB Output is correct
15 Correct 28 ms 62924 KB Output is correct
16 Correct 29 ms 62924 KB Output is correct
17 Correct 32 ms 62892 KB Output is correct
18 Correct 31 ms 62924 KB Output is correct
19 Correct 30 ms 62908 KB Output is correct
20 Correct 28 ms 62924 KB Output is correct
21 Correct 29 ms 62856 KB Output is correct
22 Correct 29 ms 62900 KB Output is correct
23 Correct 29 ms 62880 KB Output is correct
24 Correct 30 ms 62924 KB Output is correct
25 Correct 30 ms 62920 KB Output is correct
26 Correct 29 ms 63008 KB Output is correct
27 Correct 31 ms 62892 KB Output is correct
28 Correct 29 ms 62996 KB Output is correct
29 Correct 29 ms 62816 KB Output is correct
30 Correct 30 ms 62960 KB Output is correct
31 Correct 30 ms 62972 KB Output is correct
32 Correct 30 ms 62908 KB Output is correct
33 Correct 478 ms 99032 KB Output is correct
34 Correct 395 ms 99336 KB Output is correct
35 Correct 395 ms 99140 KB Output is correct
36 Correct 461 ms 99092 KB Output is correct
37 Correct 79 ms 74820 KB Output is correct
38 Correct 77 ms 74784 KB Output is correct
39 Correct 213 ms 98256 KB Output is correct
40 Correct 203 ms 98188 KB Output is correct
41 Correct 119 ms 74808 KB Output is correct
42 Correct 126 ms 86724 KB Output is correct
43 Correct 66 ms 74668 KB Output is correct
44 Correct 190 ms 98224 KB Output is correct
45 Correct 76 ms 74700 KB Output is correct
46 Correct 86 ms 74660 KB Output is correct
47 Correct 187 ms 98244 KB Output is correct
48 Correct 180 ms 98104 KB Output is correct
49 Correct 237 ms 76780 KB Output is correct
50 Correct 209 ms 76740 KB Output is correct
51 Correct 366 ms 99144 KB Output is correct
52 Correct 290 ms 99132 KB Output is correct
53 Correct 590 ms 76716 KB Output is correct
54 Correct 297 ms 93620 KB Output is correct
55 Correct 191 ms 77744 KB Output is correct
56 Correct 350 ms 106052 KB Output is correct
57 Correct 289 ms 78404 KB Output is correct
58 Correct 404 ms 79044 KB Output is correct
59 Correct 180 ms 104508 KB Output is correct