제출 #38200

#제출 시각아이디문제언어결과실행 시간메모리
38200TalantK개의 묶음 (IZhO14_blocks)C++14
100 / 100
229 ms81972 KiB
#include <bits/stdc++.h> #define fr first #define sc second #define OK puts("OK"); #define pb push_back #define mk make_pair using namespace std; typedef long long ll; const ll inf = (ll)1e18 + 7; const int N = (int)1e5 + 7; int n,k; int a[N]; ll dp[101][N]; int main () { cin >> n >> k; for (int i = 1; i <= n; i ++) scanf ("%d", &a[i]); memset(dp,0x3f3f3f3f,sizeof(dp)); dp[0][0] = 0; for (int i = 1; i <= k; i ++) { stack <pair<ll,ll> > st; st.push({inf,inf}); for (int j = i; j <= n; j ++) { ll cur = dp[i - 1][j - 1]; while (!st.empty() && st.top().fr <= a[j]) { cur = min(cur,st.top().sc); st.pop(); } dp[i][j] = min(st.top().fr + st.top().sc,cur + a[j]); if (st.top().fr + st.top().sc > cur + a[j]) st.push({a[j],cur}); } } cout << dp[k][n] << endl; }

컴파일 시 표준 에러 (stderr) 메시지

blocks.cpp: In function 'int main()':
blocks.cpp:24:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
                 scanf ("%d", &a[i]);
                                    ^
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