Submission #1079757

#TimeUsernameProblemLanguageResultExecution timeMemory
1079757quangminh412오렌지 출하 (JOI16_ho_t1)C++14
100 / 100
34 ms1112 KiB
#include <bits/stdc++.h> using namespace std; /* John Watson https://codeforces.com/profile/quangminh98 Mua Code nhu mua Florentino !! */ #define faster() ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); #define ll long long const ll oo = 1e18; const int maxn = 2e4 + 9; const int segsize = 4 * maxn; int n, m, k; ll arr[maxn]; signed main() { if (fopen("test.inp", "r")) { freopen("test.inp", "r", stdin); freopen("test.out", "w", stdout); } faster(); cin >> n >> m >> k; for (int i = 1; i <= n; i++) cin >> arr[i]; vector<ll> dp(n + 1, oo); dp[0] = 0; for (int i = 1; i <= n; i++) { ll mn = oo, mx = -oo; for (int j = i; j >= max(1, i - m + 1); j--) { mn = min(mn, arr[j]); mx = max(mx, arr[j]); dp[i] = min(dp[i], dp[j - 1] + k + (i - j + 1) * (mx - mn)); } } cout << dp[n] << '\n'; return 0; }

Compilation message (stderr)

2016_ho_t1.cpp: In function 'int main()':
2016_ho_t1.cpp:25:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |   freopen("test.inp", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
2016_ho_t1.cpp:26:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |   freopen("test.out", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
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