oj.uz

Submission #334545

# Submission time Handle Problem Language Result Execution time Memory
334545 2020-12-09T11:18:54 Z hackxsaras Stove (JOI18_stove) C++14
100 / 100
 28 ms 1932 KB 
#include "bits/stdc++.h"
#include "chrono"

using namespace std;
using namespace std::chrono; 
 
// #pragma GCC target ("avx2")
// #pragma GCC optimization ("O3")
// #pragma GCC optimization ("unroll-loops")
// #pragma optimization_level 3
// #pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

#define pb push_back
#define galen_colin {ios_base::sync_with_stdio(false);}
#define orz {cin.tie(NULL); cout.tie(NULL);}
#define fix(prec) {cout << setprecision(prec) << fixed;}
#define mp make_pair
#define f first
#define s second
#define all(v) v.begin(), v.end()

typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<pii> vpi;
typedef vector<pll> vpl;
typedef vector<vi> vvi;
typedef vector<vl> vvl;

template<typename A> ostream& operator<<(ostream &cout, vector<A> const &v);
template<typename A, typename B> ostream& operator<<(ostream &cout, pair<A, B> const &p) { return cout << "(" << p.f << ", " << p.s << ")"; }
template<typename A> ostream& operator<<(ostream &cout, vector<A> const &v) {
    cout << ""; for(int i = 0; i < v.size(); i++) {if (i) cout << " "; cout << v[i];} return cout << "\n";
}
template<typename A, typename B> istream& operator>>(istream& cin, pair<A, B> &p) {
    cin >> p.first;
    return cin >> p.second;
}
template<typename A> istream& operator>>(istream& cin, vector<A> &v) {
    for(auto &x:v)cin>>x;
    return cin;
}

ll min(ll a, int b){return min(a, (ll) b);}
ll min(int a, ll b){return min(b, (ll) a);}
ll max(ll a, int b){return max(a, (ll) b);}
ll max(int a, ll b){return max(b, (ll) a);}

void usaco(string filename) {
  // #pragma message("be careful, freopen may be wrong")
    freopen((filename + ".in").c_str(), "r", stdin);
    freopen((filename + ".out").c_str(), "w", stdout);
}
 
const ld pi = 3.14159265358979323846;
// const ll mod = 1000000007;
const ll mod = 998244353;
// ll mod;
const ll INF = 1e9+7;
 


ll n, m, k, q, l, r, x, y, z;

const ll sz = 1e6 + 1;
string s, t;
ll ans = 0;


void solve(int tc = 0) {

    cin>>n>>k;
    int last = -1;
    vi op;
    for(int i=0;i<n;i++){
        cin>>x;
        if(last!=-1){
            op.pb(x - last );
        }
        last = x+1;
    }
    k--;
    sort(op.rbegin(), op.rend());
    ll ans =0;
    while(op.size() > k){
        ans += op.back();
        op.pop_back();
    }
    cout<<n + ans<<"\n";
}
 
int main() {
    #ifdef HACKX
        auto begin = std::chrono::high_resolution_clock::now();
    #endif
    
    galen_colin orz
    
    // usaco("cowland");
 
    int tc = 1;
    //cin >> tc;
    for (int t = 0; t < tc; t++) solve(t);
    
    #ifdef HACKX
        auto end = std::chrono::high_resolution_clock::now();
        cout << setprecision(4) << fixed;
        // cout << "Execution time: " << std::chrono::duration_cast<std::chrono::duration<double>>(end - begin).count() << " seconds" << endl;
    #endif
}

Compilation message

stove.cpp: In function 'void solve(int)':
stove.cpp:90:21: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
   90 |     while(op.size() > k){
      |           ~~~~~~~~~~^~~
stove.cpp: In function 'void usaco(std::string)':
stove.cpp:56:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   56 |     freopen((filename + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
stove.cpp:57:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   57 |     freopen((filename + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 392 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 392 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 2 ms 364 KB Output is correct
12 Correct 1 ms 404 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 492 KB Output is correct
15 Correct 1 ms 364 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 392 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 2 ms 364 KB Output is correct
12 Correct 1 ms 404 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 492 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 21 ms 1932 KB Output is correct
17 Correct 20 ms 1904 KB Output is correct
18 Correct 20 ms 1904 KB Output is correct
19 Correct 20 ms 1904 KB Output is correct
20 Correct 22 ms 1904 KB Output is correct
21 Correct 24 ms 1904 KB Output is correct
22 Correct 20 ms 1904 KB Output is correct
23 Correct 20 ms 1904 KB Output is correct
24 Correct 28 ms 1904 KB Output is correct