Submission #946670

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
946670	2024-03-14T21:36:24 Z	PagodePaiva	Highway Tolls (IOI18_highway)	C++17	6 / 100	88 ms	2236 KB

highway

#include "highway.h"
#include<bits/stdc++.h>
#define N 90010
#define ll long long

using namespace std;

void find_pair(int n, std::vector<int> u, std::vector<int> v, int an, int bn) {
  ll a = an;
  ll b = bn;
  int l = 0, r = n-2;
  vector <int> w(n-1);
  for(int i = 0;i < n-1;i++) w[i] = 0;
  ll custo = ask(w);
  ll d = custo/a;
  while(l < r){
    int mid = (l+r)/2;
    for(int i = l;i <= mid;i++){
      w[i] = 1;
    }
    custo = ask(w);
    if(d*a == custo){
      l = mid+1;
    }
    else{
      r = mid;
    }
    for(int i = 0;i < n-1;i++) w[i] = 0;
  }
  answer(l, l+d);
  return;
  // int M = U.size();
  // for (int j = 0; j < 50; ++j) {
  //   std::vector<int> w(M);
  //   for (int i = 0; i < M; ++i) {
  //     w[i] = 0;
  //   }
  //   long long toll = ask(w);
  // }
  // answer(0, N - 1);
}

Compilation message

highway.cpp: In function 'void find_pair(int, std::vector<int>, std::vector<int>, int, int)':
highway.cpp:10:6: warning: unused variable 'b' [-Wunused-variable]
   10 |   ll b = bn;
      |      ^

Subtask #1
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	0 ms	344 KB	Output is incorrect: {s, t} is wrong.
2	Halted	0 ms	0 KB	-

Subtask #2
0 / 7.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	1 ms	344 KB	Output is incorrect: {s, t} is wrong.
2	Halted	0 ms	0 KB	-

Subtask #3
6.0 / 6.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	13 ms	600 KB	Output is correct
2	Correct	13 ms	580 KB	Output is correct
3	Correct	18 ms	1024 KB	Output is correct
4	Correct	51 ms	2192 KB	Output is correct
5	Correct	70 ms	2236 KB	Output is correct
6	Correct	49 ms	2204 KB	Output is correct
7	Correct	60 ms	2188 KB	Output is correct
8	Correct	88 ms	2184 KB	Output is correct
9	Correct	64 ms	2188 KB	Output is correct