제출 #102679

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
102679	2019-03-26 17:52:13	ihdignite	Cake 3 (JOI19_cake3)	C++14	100 / 100	1014 ms	10592 KiB

cake3

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#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int mxN=2e5;
int n, m, p[mxN];
array<ll, 2> a[mxN], q[mxN], ft[mxN+1];
ll ans=-1e18;
array<ll, 2> operator+(array<ll, 2> a, array<ll, 2> b) {
  return {a[0]+b[0], a[1]+b[1]};
}
void upd(int i, array<ll, 2> x) {
  for(++i; i<=n; i+=i&-i)
    ft[i]=ft[i]+x;
}
ll sk(int k) {
  array<ll, 2> r{};
  for(int i=17, x=0; ~i; --i) {
    if(x+(1<<i)<=n&&(r+ft[x+(1<<i)])[1]<=k) {
      x+=1<<i;
      r=r+ft[x];
    }
  }
  return r[0];
}
 
 
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컴파일 시 표준 에러 (stderr) 메시지

cake3.cpp: In function 'void dc(int, int, int, int)':
cake3.cpp:58:5: warning: 'm2' may be used uninitialized in this function [-Wmaybe-uninitialized]
  upd(p[m2], {-a[m2][1], -1});
  ~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 19 / 19
• Subtask 3: 76 / 76