oj.uz

Submission #47849

# Submission time Handle Problem Language Result Execution time Memory
47849 2018-05-08T08:35:12 Z Just_Solve_The_Problem Candies (JOI18_candies) C++11
8 / 100
 7 ms 1080 KB 
#include <bits/stdc++.h>

using namespace std;

#define ll long long

const int N = (int)1e5 + 7;
const int smallN = (int)2e3 + 7;

ll a[smallN], dp[2][smallN];
int n;

main() {
  scanf("%d", &n);
  if (n > 2000) return 0;
  for (int i = 1; i <= n; i++) {
    scanf("%lld", &a[i]);
  }
  for (int j = 1; j <= (n + 1) / 2; j++) {
    memset(dp[j & 1], 0, sizeof dp[j & 1]);
    for (int i = j * 2 - 1; i <= n; i++) {
      dp[j & 1][i] = dp[j & 1][i - 1];
      dp[j & 1][i] = max(dp[j & 1][i], dp[j & 1 ^ 1][i - 2] + a[i]);
    }
    printf("%lld\n", dp[j & 1][n]);
  }
}

Compilation message

candies.cpp:13:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
candies.cpp: In function 'int main()':
candies.cpp:23:45: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
       dp[j & 1][i] = max(dp[j & 1][i], dp[j & 1 ^ 1][i - 2] + a[i]);
                                           ~~^~~
candies.cpp:14:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
   ~~~~~^~~~~~~~~~
candies.cpp:17:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld", &a[i]);
     ~~~~~^~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 376 KB Output is correct
2 Correct 7 ms 508 KB Output is correct
3 Correct 6 ms 612 KB Output is correct
4 Correct 6 ms 612 KB Output is correct
5 Correct 6 ms 676 KB Output is correct
6 Correct 6 ms 760 KB Output is correct
7 Correct 6 ms 760 KB Output is correct
8 Correct 6 ms 760 KB Output is correct
9 Correct 6 ms 768 KB Output is correct
10 Correct 6 ms 788 KB Output is correct
11 Correct 6 ms 808 KB Output is correct
12 Correct 6 ms 828 KB Output is correct
13 Correct 6 ms 848 KB Output is correct
14 Correct 6 ms 996 KB Output is correct
15 Correct 7 ms 996 KB Output is correct
16 Correct 6 ms 1000 KB Output is correct
17 Correct 6 ms 1028 KB Output is correct
18 Correct 6 ms 1040 KB Output is correct
19 Correct 6 ms 1060 KB Output is correct
20 Correct 6 ms 1080 KB Output is correct

Subtask #2
0 / 92.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 376 KB Output is correct
2 Correct 7 ms 508 KB Output is correct
3 Correct 6 ms 612 KB Output is correct
4 Correct 6 ms 612 KB Output is correct
5 Correct 6 ms 676 KB Output is correct
6 Correct 6 ms 760 KB Output is correct
7 Correct 6 ms 760 KB Output is correct
8 Correct 6 ms 760 KB Output is correct
9 Correct 6 ms 768 KB Output is correct
10 Correct 6 ms 788 KB Output is correct
11 Correct 6 ms 808 KB Output is correct
12 Correct 6 ms 828 KB Output is correct
13 Correct 6 ms 848 KB Output is correct
14 Correct 6 ms 996 KB Output is correct
15 Correct 7 ms 996 KB Output is correct
16 Correct 6 ms 1000 KB Output is correct
17 Correct 6 ms 1028 KB Output is correct
18 Correct 6 ms 1040 KB Output is correct
19 Correct 6 ms 1060 KB Output is correct
20 Correct 6 ms 1080 KB Output is correct
21 Incorrect 2 ms 1080 KB Output isn't correct
22 Halted 0 ms 0 KB -