제출 #448580

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
448580	2021-07-30 20:59:10	SirCovidThe19th	코끼리 (Dancing Elephants) (IOI11_elephants)	C++14	100 / 100	4274 ms	18660 KiB

elephants

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include <bits/stdc++.h>
using namespace std; 
 
#define ar2 array<int, 2>
#define lb(v, x) lower_bound(v.begin(), v.end(), x)-v.begin()
 
const int mx = 1.5e5+5, sq = 555, mBL = mx/sq+5;
 
int N, L, X[mx], R[mx], mxB, reset; vector<int> blk[mBL]; vector<ar2> dp[mBL]; map<int, int> mp;
 
void calc(int b){
    int sz = blk[b].size(); dp[b].clear(); dp[b].resize(sz);
    for (int i = sz-1, p = sz-1; i >= 0; i--){
        while (blk[b][p]-blk[b][i] > L) p--;
        dp[b][i] = (p == sz-1) ? ar2{1, blk[b][i]+L} : ar2{dp[b][p+1][0]+1, dp[b][p+1][1]};
    }
}
void build(){
    mxB = 0; blk[mxB].clear();
    for (auto i : mp){
        if (blk[mxB].size() >= sq) blk[++mxB].clear();
        blk[mxB].push_back(i.first);
    }for (int i = 0; i <= mxB; i++) calc(i), R[i] = (i == mxB) ? 2e9 : blk[i].back();
}
void upd(int x, bool ins){
    int b = 0; while (x > R[b]) b++;  
    int p = lb(blk[b], x);
    ins ? blk[b].insert(blk[b].begin()+p, x) : blk[b].erase(blk[b].begin()+p);
    calc(b);
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

컴파일 시 표준 에러 (stderr) 메시지

elephants.cpp: In function 'int query()':
elephants.cpp:35:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |         if (p != blk[b].size()) x = dp[b][p][1], ans += dp[b][p][0];
      |             ~~^~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 16 / 16
• Subtask 3: 24 / 24
• Subtask 4: 47 / 47
• Subtask 5: 3 / 3