제출 #1296393

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1296393		temurbek1371	Stove (JOI18_stove)	C++20	100 / 100	14 ms	2004 KiB

stove

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
template <typename T> 
using ordered_multiset = tree<
    T, 
    null_type, 
    less_equal<T>,
    rb_tree_tag, 
    tree_order_statistics_node_update>;
#define int long long
#define vi vector<int>
#define vvi vector<vi>
#define vvvi vector<vvi>
#define vb vector<bool>
#define all(x) x.begin(), x.end()
#define allr(x) x.rbegin(), x.rend()
#define endl '\n'
#define maxx(x) *max_element(all(x))
#define pii pair<int,int>
#define minn(x) *min_element(all(x))
#define vpii vector<pii>
#define di deque<int>
#define mii map<int,int>
#define vap(x) vector<array<int,x>>
constexpr int MOD = 1000000007;
constexpr int inf = 1e18;
void fast_io() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
}
ostream& operator<<(ostream& out, vi& a) {
    for (int i = 0; a.size() > i; i++)out << a[i] << ' ';
    return out;
}
ostream& operator<<(ostream& out, vector<vi>& a) {
    for (auto& row : a) {
        for (auto& elem : row) out << elem << ' ';
        out << '\n';
    }
    return out;
}
istream& operator>>(istream& in, vi& a) {
    for (int i = 0; a.size() > i; i++) in >> a[i];
    return in;
}
istream& operator>>(istream& in, vector<vi>& a) {
    for(int i = 0;i<a.size();i++){
        for(int j = 0;j<a[i].size();j++){
            in >> a[i][j];
        }
    }
    return in;
}
int sumofvecor(vi a){
    int sm = 0;
    for(int i = 0;i<a.size();i++)sm+=a[i];
    return sm;
}
void file_io() {
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
}
pii getmax(vi a){
    int n = a.size();
    int mx = -inf,ans = 0;
    for(int i = 0;i<n;i++){
        if(mx<a[i]){
            ans = i;
            mx = a[i];
        }
    }
    return {mx,ans};
}
bool isprime(int x){
    for(int i = 2;i*i<=x;i++){
        if(x%i==0)return false;
    }
    return x>=2;
}
int binpow(int base,int power){
    int res = 1;
    while(power>0){
        if(power&1)res=(res*base)%MOD;
        base = (base*base)%MOD;
        power>>=1;
    }
    return res;
}
void solve();
signed main(signed argc, char *argv[]) {
    clock_t start = clock();
    fast_io();
    // file_io();
    if (argc > 1 && string(argv[1]) == "gg") file_io();
    int test = 1;
    // cin >> test;
    while (test--) {
        solve();
    }
    cerr << "Vaqt " << double(clock() - start) / double(CLOCKS_PER_SEC) * 1000 << " ms\n";
}
void solve(){
    int n,k;
    cin>>n>>k;
    vi a(n);
    cin>>a;
    k--;
    int ans = a[n-1]-a[0]+1;
    vi diff(n-1);
    for(int i = 0;i<n-1;i++){
        diff[i]=a[i+1]-a[i]-1;
    }
    sort(allr(diff));
    for(int i = 0;i<k;i++){
        ans-=diff[i];
    }
    cout<<ans<<endl;
}

컴파일 시 표준 에러 (stderr) 메시지

stove.cpp: In function 'void file_io()':
stove.cpp:64:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   64 |     freopen("input.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
stove.cpp:65:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   65 |     freopen("output.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

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