oj.uz

Submission #1073786

# Submission time Handle Problem Language Result Execution time Memory
1073786 2024-08-24T21:01:21 Z horiaboeriu Kpart (eJOI21_kpart) C++17
100 / 100
 704 ms 856 KB 
#include <stdio.h>
#include <stdlib.h>
#define MAX 50000
#define MAXN 1000
char f[MAXN + 1];
int v[MAXN + 1], dp[MAX + 1];//dp[x] este cea mai mare pozitie de pe care incepe un subsir cu suma x
int main()
{
    int t1, i1, n, i, sum, x, s, j, nr;
    scanf("%d", &t1);
    for (i1 = 0; i1 < t1; i1++) {
        for (i = 0; i <= MAX; i++) {
            dp[i] = 0;
        }
        scanf("%d", &n);
        sum = 0;
        for (i = 1; i <= n; i++) {
            f[i] = 0;
            scanf("%d", &v[i]);
            sum += v[i];
        }
        sum = sum / 2 + 1;
        //o sa fac dp si o sa iau fiecare secventa din n si ar trebui sa existe un subsir in acea secventa care sa aiba suma cat jumatatea din suma secventei
        for (i = 1; i <= n; i++) {
            for (x = sum - v[i]; x > 0; x--) {
                if (dp[x] > dp[x + v[i]]) {
                    dp[x + v[i]] = dp[x];
                }
            }
            dp[v[i]] = i;//suma v[i] se poate obtine de pe poz i
            s = 0;
            for (j = i; j > 0; j--) {
                s += v[j];
                if (s % 2 > 0 || dp[s / 2] < j) {
                    f[i - j + 1] = 1;
                }
            }
        }

        nr = 0;
        for (i = 1; i <= n; i++) {
            nr += 1 - f[i];
        }
        printf("%d ", nr);
        for (i = 1; i <= n; i++) {
            if (f[i] == 0) {
                printf("%d ", i);
            }
        }
        printf("\n");
    }
    return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:10:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |     scanf("%d", &t1);
      |     ~~~~~^~~~~~~~~~~
Main.cpp:15:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |         scanf("%d", &n);
      |         ~~~~~^~~~~~~~~~
Main.cpp:19:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |             scanf("%d", &v[i]);
      |             ~~~~~^~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 856 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 604 KB Output is correct
2 Correct 18 ms 604 KB Output is correct

Subtask #3
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 56 ms 600 KB Output is correct
2 Correct 142 ms 604 KB Output is correct
3 Correct 145 ms 604 KB Output is correct
4 Correct 251 ms 604 KB Output is correct
5 Correct 508 ms 604 KB Output is correct
6 Correct 704 ms 604 KB Output is correct
7 Correct 631 ms 608 KB Output is correct