Submission #294862

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
294862	2020-09-09 10:05:48	shrek12357	Rice Hub (IOI11_ricehub)	C++14	100 / 100	89 ms	1536 KiB

ricehub

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#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <map>
#include <set>
#include <climits>
#include <cmath>
#include <fstream>
#include <queue>
#include "ricehub.h"
using namespace std;
 
bool tern(int lo, int hi, long long pre[], long long b, int s1, int s2) {
  if (hi - lo == 1) {
    long long val1 = pre[hi + 1] - pre[hi] - pre[lo + 1] + pre[lo];
    return val1 <= b;
  }
  while (hi >= lo) {
    int mid1 = lo + (hi - lo) / 3;
    int mid2 = hi - (hi - lo) / 3;
    long long val1 = pre[s2 + 1] - pre[mid1 + 1] - (s2- mid1)*(pre[mid1 + 1] - pre[mid1]) + (mid1 - s1)*(pre[mid1 + 1] - pre[mid1]) - pre[mid1] + pre[s1];
    long long val2 = pre[s2 + 1] - pre[mid2 + 1] - (s2 - mid2)*(pre[mid2 + 1] - pre[mid2]) + (mid2 - s1)*(pre[mid2 + 1] - pre[mid2]) - pre[mid2] + pre[s1];
    if (val1 <= b || val2 <= b) {
      return true;
    }
    if (val1 < val2) {
      hi = mid2 - 1;
    }
    else if (val1 > val2) {
 
 
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• Subtask 1: 17 / 17
• Subtask 2: 25 / 25
• Subtask 3: 26 / 26
• Subtask 4: 32 / 32