Submission #1150477

#	Time	Username	Problem	Language	Result	Execution time	Memory
1150477		nguyn	Stove (JOI18_stove)	C++20	100 / 100	11 ms	1096 KiB

stove

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

#define ll long long 
#define F first
#define S second
#define pb push_back 
#define pii pair<int,int>

const int N = 1e5 + 5;
const int inf = 2e9; 

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

signed main(){
    ios_base::sync_with_stdio(false) ; 
    cin.tie(0) ; cout.tie(0) ; 
    if (fopen("INP.INP" ,"r")) {
        freopen("INP.INP" ,"r" , stdin) ;
        freopen("OUT.OUT" , "w" , stdout) ;
    }
    cin >> n >> k;
    for (int i = 1; i <= n; i++) {
    	cin >> a[i]; 
    }
    int res = a[n] + 1 - a[1]; 
    for (int i = 2; i <= n; i++) {
        d[i] = a[i] - a[i - 1]; 
    }
    sort(d + 2, d + 1 + n, greater<int>()); 
    for (int i = 2; i <= k; i++) {
        res = res - d[i] + 1; 
    }
    cout << res;
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:21:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |         freopen("INP.INP" ,"r" , stdin) ;
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
stove.cpp:22:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |         freopen("OUT.OUT" , "w" , stdout) ;
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

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