제출 #549404

#제출 시각아이디문제언어결과실행 시간메모리
549404joshjms선물상자 (IOI15_boxes)C++14
100 / 100
732 ms361380 KiB
#include "boxes.h" #include <bits/stdc++.h> using namespace std; #define ll long long #define ld long double #define pb push_back #define fi first #define se second #define debug(x) cout << #x << " => " << x << "\n"; const int mod = 1e9 + 7; ll n, k, l, p[10000005], idx; ll le = 0, ri = 0; ll dp[10000005][2]; ll ans = 1e18 + 7; ll delivery(int N, int K, int L, int P[]) { n = N, k = K, l = L; for(int i = 0; i < n; i++) { if(P[i]) p[++idx] = P[i]; } n = idx; if(n == 0) return 0; le = 0, ri = 1; for(; ri <= n; ri++) { while(ri - le > k) le++; dp[ri][0] = dp[le][0] + min(l, p[ri] * 2); } reverse(p + 1, p + n + 1); le = 0, ri = 1; for(; ri <= n; ri++) { while(ri - le > k) le++; dp[ri][1] = dp[le][1] + min(l, ((l - p[ri]) % l) * 2); } ans = min(dp[n][0], dp[n][1]); for(int i = 1; i < n; i++) { ans = min(ans, dp[i][0] + dp[n - i][1]); } return ans; } // static char _buffer[1024]; // static int _currentChar = 0; // static int _charsNumber = 0; // static FILE *_inputFile, *_outputFile; // static inline int _read() { // if (_charsNumber < 0) { // exit(1); // } // if (!_charsNumber || _currentChar == _charsNumber) { // _charsNumber = (int)fread(_buffer, sizeof(_buffer[0]), sizeof(_buffer), _inputFile); // _currentChar = 0; // } // if (_charsNumber <= 0) { // return -1; // } // return _buffer[_currentChar++]; // } // static inline int _readInt() { // int c, x, s; // c = _read(); // while (c <= 32) c = _read(); // x = 0; // s = 1; // if (c == '-') { // s = -1; // c = _read(); // } // while (c > 32) { // x *= 10; // x += c - '0'; // c = _read(); // } // if (s < 0) x = -x; // return x; // } // int main() { // _inputFile = stdin; // _outputFile = stdout; // int N, K, L, i; // N = _readInt(); // K = _readInt(); // L = _readInt(); // int *p = (int*)malloc(sizeof(int) * (unsigned int)N); // for (i = 0; i < N; i++) { // p[i] = _readInt(); // } // fprintf(_outputFile, "%lld\n", delivery(N, K, L, p)); // return 0; // }
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