제출 #424387

#제출 시각아이디문제언어결과실행 시간메모리
424387SuhaibSawalha1선물상자 (IOI15_boxes)C++17
50 / 100
50 ms21676 KiB
#include "boxes.h" #include <bits/stdc++.h> using namespace std; const int N = 1000; long long dp[N][N]; int a[N], n, l, k; int f (int i, int j) { return min({l, 2 * a[j], 2 * (l - a[i])}); } long long calc (int i = 0, int s = 0) { if (i == n) { return s ? f(i - s, i - 1) : 0; } long long &ret = dp[i][s]; if (~ret) { return ret; } ret = calc(i + 1, 0) + f(i - s, i); if (s + 1 != k) { ret = min(ret, calc(i + 1, s + 1)); } return ret; } long long delivery(int N, int K, int L, int p[]) { n = N; l = L; k = K; memset(dp, -1, sizeof dp); for (int i = 0; i < N; ++i) { a[i] = p[i]; } return calc(); }

컴파일 시 표준 에러 (stderr) 메시지

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:28:24: warning: declaration of 'N' shadows a global declaration [-Wshadow]
   28 | long long delivery(int N, int K, int L, int p[]) {
      |                    ~~~~^
boxes.cpp:5:11: note: shadowed declaration is here
    5 | const int N = 1000;
      |           ^
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