Submission #1228842

#TimeUsernameProblemLanguageResultExecution timeMemory
1228842Tony_TungStove (JOI18_stove)C++17
100 / 100
26 ms2076 KiB
#include <bits/stdc++.h> #define task "" #define ll long long using namespace std; const int N = 1e5 + 5; ll a[N]; priority_queue<ll> pq; int main() { ios_base::sync_with_stdio(false); cin.tie(NULL); if (fopen(task".inp", "r")) { freopen(task".inp", "r", stdin); freopen(task".out", "w", stdout); } int n, k; cin >> n >> k; for (int i = 1; i <= n; i++) { cin >> a[i]; if (i >= 2) pq.push(a[i]-a[i-1]-1); } ll res = a[n]-a[1]+1; for (int i = 1; i < k; i++) { res -= pq.top(); pq.pop(); } cout << res; return 0; }

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:16:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
stove.cpp:17:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
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