/* Author : Mychecksdead */ #include<bits/stdc++.h> using namespace std; typedef long long int ll; #define MOD (1000000000+7) #define MOD1 (998244353) #define PI 3.1415926535 #define pb push_back #define all(x) x.begin(), x.end() const int N = 1e6+100, M = 1e5+10, K = 20; int n, k, t[N], a[N]; void solve(){ cin >> n >> k; for(int i = 0; i < n; ++i) cin >> t[i]; sort(t, t + n); for(int i = 0; i < n - 1; ++i) a[i] = t[i + 1] - t[i]; sort(a, a + n - 1, greater<int>()); int ans = t[n - 1] - t[0] + 1; for(int i = 0; i < k - 1; ++i){ ans -= a[i] - 1; } cout << ans; } int main(){ cin.tie(0); ios::sync_with_stdio(0); int T = 1, aa; // cin >> T;aa=T; while(T--){ // cout << "Case #" << aa-T << ": "; solve(); cout << '\n'; } return 0; }

stove.cpp: In function 'int main()':
stove.cpp:30:14: warning: unused variable 'aa' [-Wunused-variable]
   30 |   int T = 1, aa;
      |              ^~