제출 #1086280

#제출 시각아이디문제언어결과실행 시간메모리
1086280RiverFlow선물상자 (IOI15_boxes)C++14
10 / 100
2 ms2456 KiB
#include "boxes.h" #include <bits/stdc++.h> using namespace std; const int N = (int)1e7 + 2; int n, k, l; long long f(int x) { return l * ( (x / k) + (x % k != 0) ); } long long suf[N], pre[N]; long long delivery(int N, int K, int L, int p[]) { n = N, k = K, l = L; long long ans = (long long)1e17; ans = min(ans, f(n) ); // co le la tinh cost(i): chi phi de nhung gia tri dau for(int i = 0; i < n; ++i) { long long c = 2LL * p[i]; if (i - k >= 0) { c += pre[i - k]; } pre[i] = c; } for(int i = n - 1; i >= 0; --i) { long long c = 2LL * (l - p[i]); if (i + k < n) { c += suf[i + k]; } suf[i] = c; } for(int i = 0; i < n; ++i) { ans = min(ans, pre[i] + f(n - i - 1)); ans = min(ans, suf[i] + f(i)); } for(int i = 0; i < n; ++i) for(int j = n - 1; j > i; --j) { ans = min(ans, pre[i] + suf[j] + f(j - i - 1)); } return ans; }

컴파일 시 표준 에러 (stderr) 메시지

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:14:24: warning: declaration of 'N' shadows a global declaration [-Wshadow]
   14 | long long delivery(int N, int K, int L, int p[]) {
      |                    ~~~~^
boxes.cpp:5:11: note: shadowed declaration is here
    5 | const int N = (int)1e7 + 2;
      |           ^
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