| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 127271 | ekrem | Boxes with souvenirs (IOI15_boxes) | C++98 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "boxes.h"
#include <bits/stdc++.h>
#define st first
#define nd second
#define mp make_pair
#define pb push_back
#define sol (k+k)
#define sag (k+k+1)
#define orta ((bas+son)/2)
#define coc g[node][i]
#define mod 1000000007
#define inf 1000000009
#define N 1000005
using namespace std;
typedef long long ll;
typedef pair < int , int > ii;
ll k, l, cvp, ans, bas[N], son[N];
ll ansver(int i, int j){
return ((i>=0)?bas[i]:0ll) + son[j] + 1ll*(j - i - 1 + k - 1)/k*l;
}
ll delivery(int n, int kk, int ll, int p[]) {k = kk;l = ll;
for(int i = 0; i < n; i++)
bas[i] = (i - k >= 0) ? bas[i - k] + p[i]*2ll : p[i]*2ll;
for(int i = n - 1; i >= 0; i--)
son[i] = (n > k + i) ? son[i + k] + (l - p[i])*2ll : (l - p[i])*2ll;
ans = son[0];
for(int i = -1; i < n; i++){
cvp = son[0]; int opt = 0;
// int bas = i + 1, son = n;
// while(bas < son){
// if(ansver(i, orta) >= ansver(i, orta + 1))
// bas = orta + 1;
// else
// son = orta;
// }
for(int j = i + 1; j <= n; j += k){
// cout << i << " " << j << " = " << ansver(i, j) << endl;
if(ansver(i, j) <= cvp){
cvp = ansver(i, j);
opt = j;
}
}
// cout << i << " " << opt << " " << cvp << endl;
ans = min(ans, cvp);
}
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 = fopen("in.txt", "rb");
_outputFile = fopen("out.txt", "w");
int NN, K, L, i;
NN = _readInt();
K = _readInt();
L = _readInt();
int *p = (int*)malloc(sizeof(int) * (unsigned int)N);
for (i = 0; i < NN; i++) {
p[i] = _readInt();
}
fprintf(_outputFile, "%lld\n", delivery(NN, K, L, p));
return 0;
}