Submission #1108876

#TimeUsernameProblemLanguageResultExecution timeMemory
1108876hainam2k9Stove (JOI18_stove)C++17
100 / 100
19 ms2428 KiB
#include <bits/stdc++.h> #define tt cin.tie(0), cout.tie(0), ios_base::sync_with_stdio(0) #define fo freopen((NAME+".INP").c_str(), "r", stdin), freopen((NAME+".OUT").c_str(), "w", stdout) #define ll long long #define ull unsigned long long #define i128 __int128 #define db long double #define sz(a) ((int)(a).size()) #define pb emplace_back #define pf emplace_front #define pob pop_back #define pof pop_front #define lb lower_bound #define ub upper_bound #define fi first #define se second #define ins emplace using namespace std; const int MOD = 1e9+7, MAXN = 1e5+5; const string NAME = ""; int n,k,a[MAXN]; vector<int> v; int main() { tt; if(fopen((NAME + ".INP").c_str(), "r")) fo; cin >> n >> k; for(int i = 1; i<=n; ++i) cin >> a[i]; int rs=a[n]+1-a[1]; for(int i = 2; i<=n; ++i) v.pb(a[i]-a[i-1]-1); sort(v.begin(),v.end(),greater<int>()); for(int i = 0; i<k-1; ++i) rs-=v[i]; cout << rs; }

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:3:19: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    3 | #define fo freopen((NAME+".INP").c_str(), "r", stdin), freopen((NAME+".OUT").c_str(), "w", stdout)
      |            ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
stove.cpp:26:45: note: in expansion of macro 'fo'
   26 |     if(fopen((NAME + ".INP").c_str(), "r")) fo;
      |                                             ^~
stove.cpp:3:63: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    3 | #define fo freopen((NAME+".INP").c_str(), "r", stdin), freopen((NAME+".OUT").c_str(), "w", stdout)
      |                                                        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
stove.cpp:26:45: note: in expansion of macro 'fo'
   26 |     if(fopen((NAME + ".INP").c_str(), "r")) fo;
      |                                             ^~
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