oj.uz

Submission #320997

# Submission time Handle Problem Language Result Execution time Memory
320997 2020-11-10T15:15:10 Z ssense Stove (JOI18_stove) C++14
0 / 100
 370 ms 129860 KB 
#include <bits/stdc++.h>
#define startt ios_base::sync_with_stdio(false);cin.tie(0);
typedef unsigned long long ull;
typedef long long  ll;
using namespace std;
#define FOR(n) for(int i=0;i<n;i++)
#define vt vector
#define vint vector<int>
#define all(v) v.begin(), v.end()
#define sz(a) (int)a.size()
#define MOD 1000000007
#define MOD2 998244353
#define MX 1000000000
#define NMAX 100005
#define MXL 1000000000000000000
#define PI 3.14159265
#define pb push_back
#define pf push_front
#define sc second
#define endl '\n'
#define fr firstx
#define int ll
#define ld long double


int ceildiv(int one, int two) {
	if (one % two == 0) {return one / two;}
	else {return one / two + 1;}
} int power(int n, int pow, int m) {
	if (pow == 0) return 1;
	if (pow % 2 == 0) {
		ll x = power(n, pow / 2, m);
		return (x * x) % m;
	}
	else return (power(n, pow - 1, m) * n) % m;
} int gcd(int a, int b) {
	if (!b)return a;
	return gcd(b, a % b);
} int factorial(int n, int mod) {
	if (n > 1)
		return (n * factorial(n - 1, mod)) % mod;
	else
		return 1;
} int lcm(int a, int b) {
	return (a * b) / gcd(a, b);
} vector<int> read(int n) {vector<int> a; for (int i = 0; i < n; i++) { int x; cin >> x; a.pb(x);} return a;}

void solve() {
	int n, k;
	cin >> n >> k;
	vint a = read(n);
	vint difs;
	for (int i = 0; i < n - 1; i++)
	{
		difs.pb(a[i + 1] - a[i] - 1);
	}
	sort(all(difs));
	int now = n;
	for (int i = 0; i < n - k; i++)
	{
		now += difs[i];
	}
	cout << now << endl;
}


int32_t main() {
#ifndef ONLINE_JUDGE
	freopen("input.txt", "r", stdin);
	freopen("output.txt", "w", stdout);
#endif
	solve();
}

Compilation message

stove.cpp: In function 'int32_t main()':
stove.cpp:69:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   69 |  freopen("input.txt", "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
stove.cpp:70:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   70 |  freopen("output.txt", "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 370 ms 129860 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 370 ms 129860 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 50.0

# Verdict Execution time Memory Grader output
1 Incorrect 370 ms 129860 KB Output isn't correct
2 Halted 0 ms 0 KB -