Submission #15871

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
15871	2015-07-31 17:48:18	myungwoo	Bali Sculptures (APIO15_sculpture)	C++14	100 / 100	290 ms	5680 KiB

sculpture

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#include <bits/stdc++.h>
using namespace std;
#define MAXN 2003
typedef long long lld;
int N, A, B;
int X[MAXN], E[MAXN];
bool D[101][101];
lld S[MAXN];
bool w[MAXN][MAXN];
int main()
{
  scanf("%d%d%d", &N, &A, &B);
  for (int i=1;i<=N;i++) scanf("%d", X+i), S[i] = S[i-1] + X[i];
  lld msk = 0;
  for (int b=40;b>=0;b--){
    msk <<= 1;
    for (int i=0;i<N;i++) for (int j=i+1;j<=N;j++){
      w[i][j] = (((S[j]-S[i]) >> b) | msk) == msk;
    }
    if (A == 1){
      E[0] = 0;
      for (int i=1;i<=N;i++){
        E[i] = 2e9;
        for (int j=0;j<i;j++) if (w[j][i]){
          if (E[j] >= 0) E[i] = min(E[i], E[j]+1);
        }
      }
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 16 / 16
• Subtask 3: 21 / 21
• Subtask 4: 25 / 25
• Subtask 5: 29 / 29