Submission #1180345

#	Time	Username	Problem	Language	Result	Execution time	Memory
1180345		TgX_2	Stove (JOI18_stove)	C++17	100 / 100	13 ms	2144 KiB

stove

/*-----------------------------
        Author : TgX.2
       11Ti - K28 - CHV
-----------------------------*/

#include <bits/stdc++.h>
using   namespace std;

#ifdef TGX 
#include "debug.h"
#else 
#define debug(...)
#endif 

#define FOR(i, a, b)       for (int i = (a), _b = (b); i <= _b; i += 1)
#define FORD(i, a, b)      for (int i = (a), _b = (b); i >= _b; i -= 1)

#define fi                 first
#define se                 second
#define pb                 push_back
#define len(x)             (int)((x).size())
#define all(x)             (x).begin(), (x).end()

#define _                  << " " <<
#define __                 << "\n"
#define ___                << " "

#define ______________TgX______________ main()
#define int                long long
#define intmax             1e9
#define intmin            -1e9
#define llongmax           1e18
#define llongmin          -1e18
#define memo(a, val)       memset((a), (val), sizeof((a)))

struct custom {
    static uint64_t splitmix64(uint64_t x) {
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }

    size_t operator()(uint64_t x) const {
        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(x + FIXED_RANDOM);
    }
};
template<class T1, class T2> using cmap = unordered_map<T1, T2, custom>;

template<typename T1, typename T2> 
bool mini(T1 &a, T2 b)
    {if (a > b) a = b; else return 0; return 1;}

template<typename T1, typename T2> 
bool maxi(T1 &a, T2 b)
    {if (a < b) a = b; else return 0; return 1;}
/*-----------------------------*/

const int maxn = 1e5 + 7;
int n, k, a[maxn];
vector<int> val;


void process() {
    cin >> n >> k;
    FOR(i, 1, n) {
        cin >> a[i];
        if (i != 1) val.pb(a[i] - a[i - 1] - 1);
    }
    sort(all(val), greater<int>());
    int ans = a[n] - a[1] + 1;
    FOR(i, 0, k - 2) ans -= val[i];
    cout << ans;
}



/*-----------------------------*/
______________TgX______________ {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);  
    if (fopen("temp.inp", "r")) {
        freopen("temp.inp", "r", stdin);
        freopen("temp.out", "w", stdout);
    }
    process();
    cerr << "Time: " << 1.0 * clock() / CLOCKS_PER_SEC << " s." __ ;
}


/*==============================+
|INPUT                          |
--------------------------------|

================================+
|OUTPUT                         |
--------------------------------|

===============================*/

Compilation message (stderr)

stove.cpp:28:41: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   28 | #define ______________TgX______________ main()
      |                                         ^~~~
stove.cpp:80:1: note: in expansion of macro '______________TgX______________'
   80 | ______________TgX______________ {
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
stove.cpp: In function 'int main()':
stove.cpp:84:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   84 |         freopen("temp.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
stove.cpp:85:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   85 |         freopen("temp.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 50 / 50