Submission #147412

#	Time	Username	Problem	Language	Result	Execution time	Memory
147412		ipaljak	Simfonija (COCI19_simfonija)	C++14	44 / 110	44 ms	3316 KiB

simfonija

#include <bits/stdc++.h>

using namespace std;

#define TRACE(x) cerr << #x << " " << x << endl
#define FOR(i, a, b) for (int i = (a); i < int(b); ++i)
#define REP(i, n) FOR(i, 0, n)
#define _ << " " <<

typedef long long llint;

const int MOD = 1e9 + 7;
const int MAXN = 1e5 + 10;

int n, k;
int a[MAXN], b[MAXN];

int main(void) {
  scanf("%d%d", &n, &k);
  for (int i = 0; i < n; ++i) scanf("%d", &a[i]);
  for (int i = 0; i < n; ++i) scanf("%d", &b[i]);

  vector<int> v;
  for (int i = 0; i < n; ++i)
    v.emplace_back(a[i] - b[i]);

  sort(v.begin(), v.end());

  int med = v[n / 2 - (n % 2 == 0)];
  int lo = 0, hi = n - 1;
  for (int i = 0; i < k; ++i) {
    if (abs(v[lo] - med) > abs(v[hi] - med)) ++lo; else --hi;
  }

  //TRACE(lo _ hi _ med);
  //for (int x : v) printf("%d ", x);
  //printf("\n");

  llint sol = 0;
  for (int i = lo; i <= hi; ++i)
    sol += (llint) abs(v[i] - med);

  printf("%lld\n", sol);
  return 0;
}

Compilation message (stderr)

simfonija.cpp: In function 'int main()':
simfonija.cpp:19:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &n, &k);
   ~~~~~^~~~~~~~~~~~~~~~
simfonija.cpp:20:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   for (int i = 0; i < n; ++i) scanf("%d", &a[i]);
                               ~~~~~^~~~~~~~~~~~~
simfonija.cpp:21:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   for (int i = 0; i < n; ++i) scanf("%d", &b[i]);
                               ~~~~~^~~~~~~~~~~~~

• Subtask 1: 11 / 11
• Subtask 2: 11 / 11
• Subtask 3: 11 / 11
• Subtask 4: 11 / 11
• Subtask 5: 0 / 11
• Subtask 6: 0 / 11
• Subtask 7: 0 / 11
• Subtask 8: 0 / 11
• Subtask 9: 0 / 11
• Subtask 10: 0 / 11