oj.uz

Submission #873535

# Submission time Handle Problem Language Result Execution time Memory
873535 2023-11-15T09:16:21 Z thienhx Stove (JOI18_stove) C++17
0 / 100
 0 ms 348 KB 
#include <bits/stdc++.h>
using namespace std;

// #pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2,bmi,bmi2,popcnt,lzcnt")

using ll = long long;
using ull = unsigned long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using str = string;
using ld = long double;
using db = double;

///--------------------------------

#define           F   first
#define           S   second
#define          pb   push_back
#define          lb   lower_bound
#define          ub   upper_bound
#define       sz(x)   (int)((x).size())
#define      all(x)   (x).begin(), (x).end()
#define     rall(x)   (x).rbegin(), (x).rend()
#define   mem(f, x)   memset(f, x, sizeof(f))
#define  uniqueV(x)   sort(all(x)), (x).resize(unique(all(x)) - x.begin())

template<class T> bool maximize(T &a, const T &b){ return (a < b ? a = b, 1 : 0); }
template<class T> bool minimize(T &a, const T &b){ return (a > b ? a = b, 1 : 0); }

///--------------------------------

#define PROBLEM "test"

const int MOD = 1e9 + 7; // 998244353;
const ll INF = 1e18;
const ld eps = 1e-9;
const ld PI = acos(-1);
const int dx[4]{0, 1, 0, -1}, dy[4]{1, 0, -1, 0}; // R D L U
const int ddx[4]{-1, 1, 1, -1}, ddy[4]{1, 1, -1, -1}; // UR DR DL UL

///--------------------------------

void precalc();
void solve();

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    
    if (fopen(PROBLEM".inp", "r")) {
        freopen(PROBLEM".inp", "r", stdin);
        freopen(PROBLEM".out", "w", stdout);
    }

    constexpr bool MULTI_TEST = 0;

    int t = 1;
    if (MULTI_TEST) cin >> t;

    while (t--)
        solve();
    
    // cerr << setprecision(3) << fixed;
    // cerr << "[" << 1.0 * clock() / CLOCKS_PER_SEC << "s]  ";
}

///--------------------[PROBLEM SOLUTION]--------------------///

void solve() {
    ll n, k;
    cin >> n >> k;

    ll v[n + 1];
    for (int i = 1; i <= n; i++)
        cin >> v[i];

    vector<ll> dif;
    for (int i = 2; i <= n; i++)
        dif.pb(v[i] - v[i - 1] - 1);
    sort(all(dif));
    
    ll res = v[n] - v[1] + 1;
    for (int i = 2; i <= k; i++)
        res -= dif.back(); dif.pop_back();

    cout << res << '\n';
}

Compilation message

stove.cpp: In function 'void solve()':
stove.cpp:84:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   84 |     for (int i = 2; i <= k; i++)
      |     ^~~
stove.cpp:85:28: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   85 |         res -= dif.back(); dif.pop_back();
      |                            ^~~
stove.cpp: In function 'int main()':
stove.cpp:52:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |         freopen(PROBLEM".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
stove.cpp:53:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   53 |         freopen(PROBLEM".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -