제출 #138733

#제출 시각아이디문제언어결과실행 시간메모리
138733Talant선물상자 (IOI15_boxes)C++17
100 / 100
658 ms248108 KiB
#include "boxes.h" //#include "grader.cpp" #include <bits/stdc++.h> #define sc second #define fr first #define mk make_pair #define pb push_back using namespace std; const int NN = (1e7 + 5); const long long inf = (1e18 + 7); int n,k,l; int a[NN]; long long dp[NN]; long long d[NN]; long long ans = inf; long long delivery(int N, int K, int L, int p[]) { n = N,k = K,l = L; for (int i = 1; i <= n; i ++) { a[i] = p[i - 1]; dp[i] = inf; d[i] = inf; } d[n + 1] = 0; dp[0] = 0; for (int i = 1; i <= n; i ++) { dp[i] = min(dp[i],dp[i - k >= 0 ? i - k : 0] + min(a[i] * 2,l)); } for (int i = n; i >= 1; i --) { d[i] = min(d[i],d[i + k <= n ? i + k : n + 1] + min((L - a[i]) * 2,l)); } for (int i = 0; i < n + 1; i ++) { ans = min(ans,dp[i] + d[i + 1]); } return ans; }
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