Submission #1065443

#TimeUsernameProblemLanguageResultExecution timeMemory
1065443CodeLakVNStove (JOI18_stove)C++17
100 / 100
16 ms2440 KiB
#include <bits/stdc++.h> #define no "NO" #define yes "YES" #define F first #define S second #define vec vector #define task "main" #define ll long long #define _mp make_pair #define ii pair<int, int> #define sz(x) (int)x.size() #define all(x) x.begin(), x.end() #define evoid(val) return void(std::cout << val) #define FOR(i, a, b) for(int i = (a); i <= (b); ++i) #define FOD(i, b, a) for(int i = (b); i >= (a); --i) #define unq(x) sort(all(x)); x.resize(unique(all(x)) - x.begin()) using namespace std; template<typename U, typename V> bool maximize(U &a, V b) { if (a < b) { a = b; return 1; } return 0; } template<typename U, typename V> bool minimize(U &a, V b) { if (a > b) { a = b; return 1; } return 0; } const int N = (int)2e5 + 9; const int INF = (int)1e9; const int MOD = (int)1e9 + 7; int a[N]; void main_code() { int n, k; cin >> n >> k; FOR(i, 1, n) cin >> a[i]; ll ans = a[n] - a[1] + k; vector<int> diff; FOR(i, 1, n - 1) diff.push_back(a[i] - a[i + 1]); sort(diff.begin(), diff.end()); FOR(i, 0, k - 2) ans += diff[i]; cout << ans; } int main() { ios::sync_with_stdio(0); cin.tie(0); cout.tie(0); if (fopen(task".inp", "r")) { freopen(task".inp", "r", stdin); freopen(task".out", "w", stdout); } const bool MULTITEST = 0; int num_test = 1; if (MULTITEST) cin >> num_test; while (num_test--) { main_code(); cout << "\n"; } } /* Lak lu theo dieu nhac */

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:50:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
stove.cpp:51:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
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