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Submission #249856

# Submission time Handle Problem Language Result Execution time Memory
249856 2020-07-16T06:05:34 Z Nightlight Bali Sculptures (APIO15_sculpture) C++14
0 / 100
 1 ms 384 KB 
#include <bits/stdc++.h>
using namespace std;
 
int N, A, B;
long long pre[2005];
long long mask;
bitset<2005> valid[2005];
 
long long ans = (1LL << 42) - 1;
 
bool check(long long T) {
  return ((T | mask) ^ mask) == 0;
}
 
bool can(int X) {
  for(int i = 1; i < N; i++) {
    for(int j = i + 1; j <= N; j++) {
      valid[i][j] = check(pre[j] - pre[i]);
    }
  }
  bitset<2005> now[2];
  for(int j = 1; j <= N; j++) {
    if(check(pre[j])) {
      now[1] |= valid[j];
    }
  }
//  if(A == 1 && check(pre[N])) return 1;
  int skrg, sblm;
  for(int i = 1; i <= B; i++) {
    skrg = i & 1, sblm = !skrg;
    now[skrg] = 0;
    for(int j = i; j <= N; j++) {
      if(now[sblm][j]) {
        now[skrg] |= valid[j];
      }
    }
    if(i >= A && now[sblm][N]) return 1;  
  }
  return 0;
}
 
int main() {
  scanf("%d %d %d", &N, &A, &B);
  for(int i = 1; i <= N; i++) {
    scanf("%lld", &pre[i]);
    pre[i] += pre[i - 1];
  }
  for(int i = 41; i >= 0; i--) {
    mask = ans - (1LL << i);
    if(can(i)) {
      ans -= (1LL << i);
    }
  }
  printf("%lld\n", ans);
}

Compilation message

sculpture.cpp: In function 'int main()':
sculpture.cpp:43:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d %d", &N, &A, &B);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
sculpture.cpp:45:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld", &pre[i]);
     ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 256 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 256 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -