oj.uz

Submission #1112665

# Submission time Handle Problem Language Result Execution time Memory
1112665 2024-11-14T14:17:16 Z kzhi Stove (JOI18_stove) C++14
100 / 100
 21 ms 2300 KB 
/*
    Author : kmv a.k.a kzhi
    K41 IT CHV
*/
#include <bits/stdc++.h>
using namespace std;


//#define int long long
#define ll long long
#define FOR(i,a,b) for (int i = a ; i <= b; ++ i)
#define FOD(i,a,b) for (int i = a; i >= b; -- i)


#define BIT(mask,i)       ((mask >> i) & 1)
#define MASK(i)                (1ll << (i))
#define OFFBIT(mask,i)  (mask &~(1ll<<(i)))
#define ONBIT(mask,i) (mask | (1ll << (i)))
#define lg2(x)    (63 - __builtin_clzll(x))
#define c_bit          __builtin_popcountll

#define vi vector < int >
#define all(a) a.begin(), a.end()
#define pb push_back

#define ii pair<int,int>
#define fi first
#define se second

#define openfile(TASK) if (fopen(TASK".inp","r"))\
        {freopen(TASK".inp","r",stdin);freopen(TASK".out","w",stdout);}
#define endl '\n'
#define Faster ios_base::sync_with_stdio(false); \
                        cin.tie(0);  cout.tie(0);

#define mid(l,r) ((l + r) >> 1)
#define left(id) (id << 1)
#define right(id) ((id << 1) | 1)
#define ci const int

template <class X, class Y> bool maximize(X &a, const Y &b){if(a < b) return a = b, true;return false;}
template <class X, class Y> bool minimize(X &a, const Y &b){if(a > b) return a = b, true;return false;}

const int N = 1e5 + 5;

int n, k;
int a[N];
int v[N];

void SOLVE(){
    cin >> n >> k;
    k --;
    FOR (i, 1, n){
        cin >> a[i];
        if (i > 1)
            v[i - 1] = a[i] - a[i - 1] - 1;
    }

    int res = a[n] + 1 - a[1];
    sort(v + 1, v + n);

    for (int i = 1; i <= k; i ++){
        int pos = n - i;
        if (pos <= 0)
            break;
        res -= v[pos];
    }

    cout << res;
}

signed main(){
    Faster
    openfile("stove")

    int q = 1;

//    cin >> q;

    while (q --){
        SOLVE();
    }

    return 0;
}

Compilation message

stove.cpp: In function 'int main()':
stove.cpp:31:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |         {freopen(TASK".inp","r",stdin);freopen(TASK".out","w",stdout);}
      |          ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
stove.cpp:74:5: note: in expansion of macro 'openfile'
   74 |     openfile("stove")
      |     ^~~~~~~~
stove.cpp:31:47: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |         {freopen(TASK".inp","r",stdin);freopen(TASK".out","w",stdout);}
      |                                        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
stove.cpp:74:5: note: in expansion of macro 'openfile'
   74 |     openfile("stove")
      |     ^~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 2 ms 336 KB Output is correct
11 Correct 2 ms 516 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 2 ms 524 KB Output is correct
14 Correct 2 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 2 ms 336 KB Output is correct
11 Correct 2 ms 516 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 2 ms 524 KB Output is correct
14 Correct 2 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 14 ms 2128 KB Output is correct
17 Correct 14 ms 2000 KB Output is correct
18 Correct 14 ms 2128 KB Output is correct
19 Correct 14 ms 2300 KB Output is correct
20 Correct 16 ms 2140 KB Output is correct
21 Correct 14 ms 2128 KB Output is correct
22 Correct 21 ms 2212 KB Output is correct
23 Correct 14 ms 2140 KB Output is correct
24 Correct 14 ms 2128 KB Output is correct