제출 #1283815

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1283815		huyngodzz	Stove (JOI18_stove)	C++20	100 / 100	15 ms	1484 KiB

stove

///huynhocute123///
#include<bits/stdc++.h>
using namespace std;
#define S second
#define F first
#define pii pair<int,int>
#define piii pair<int,pair<int,int>>
#define pb push_back
#define FOR(i, a, b) for(int i = a; i <= b; ++i)
#define REP(i, a, b) for(int i = b; i >= a; --i)
#define ALL(v) v.begin(),v.end()
#define inp(name) if(fopen(name, "r")) freopen(name, "r", stdin);
#define out(name) if(fopen(name, "w")) freopen(name, "w", stdout);
//random_device rd;
//mt19937 rng(rd());
//#pragma GCC optimize ("O3")
//#pragma GCC optimize ("unroll-loops")
//#pragma GCC target("popcnt")
//#define int long long
const int MAX = 1e9+9;
const long long  MAXLL = 1e18+9;
const double pi = 3.14159265358979323846;
const double rad = 3.14159265358979323846 /180;
bool minimize(int &u, int v){
    if(v < u){
        u = v;
        return 1;
    }
    return 0;
}
bool maximize(int &u, int v){
    if(v > u){
        u = v;
        return 1;
    }
    return 0;
}
bool maximizell(long long &u, long long v){
    if(v > u){
        u = v;
        return 1;
    }
    return 0;
}
bool minimizell(long long &u, long long v){
    if(v < u){
        u = v;
        return 1;
    }
    return 0;
}
const int  mod = 1e9 + 7;
inline int fastPow(int a, int n){
    if(n == 0) return 1;
    int t = fastPow(a, n >> 1);
    t = 1ll * t * t % mod;
    if(n & 1) t = 1ll * t * a % mod;
    return t;
}
const int maxN = 1e5 + 99 ;
int Time[maxN] , n , k;
vector<int> dif;
inline void solve(){
    cin >> n >> k;
    FOR(i, 1, n){
        cin >> Time[i];
    }
    sort(Time + 1, Time + 1 + n);
    int ans =  Time[n] - Time[1] + 1;
    FOR(i, 1, n - 1){
        dif.pb(Time[i + 1] - Time[i] - 1);
//        cout << Time[i] << " "<< Time[i + 1] << '\n';
    }
    sort(ALL(dif));
    k--;
    while(k > 0){
        if(dif.size()){
            ans -= dif.back();
//            cout << dif.back() << " ";
            dif.pop_back();
        }
        k--;
    }
    cout << ans;
}
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    #define NAME "task"
    if(fopen(NAME".inp", "r")){
        freopen(NAME".inp", "r" ,stdin);
//        freopen(NAME".out", "w" ,stdout);
    }
    int tc = 1;
   // cin >> tc;
    while( tc-- )solve();
    cerr << '\n' << "Time elapsed: " << (1.0 * clock() / CLOCKS_PER_SEC) << " s\n" ;


}

컴파일 시 표준 에러 (stderr) 메시지

stove.cpp: In function 'int main()':
stove.cpp:92:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   92 |         freopen(NAME".inp", "r" ,stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

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