Submission #1067205

#TimeUsernameProblemLanguageResultExecution timeMemory
1067205duckindogA Difficult(y) Choice (BOI21_books)C++17
10 / 100
2 ms1112 KiB
#include <bits/stdc++.h> #include "books.h" using namespace std; void solve(int n, int k, long long a, int s) { vector<long long> x(n + 1); vector<int> ret; { // k - 1 int total = 0; for (int i = 1; i < k; ++i) { if (!x[i]) x[i] = skim(i); total += x[i]; } auto get = [&](int i) { if (!x[i]) x[i] = skim(i); return total + x[i]; }; int l = k, r = n; while (l <= r) { int mid = l + r >> 1; auto value = get(mid); if (a <= value && value <= 2 * a) { for (int i = 1; i < k; ++i) ret.push_back(i); ret.push_back(mid); answer(ret); return; } if (value < a) l = mid + 1; else r = mid - 1; } } { //consecutive auto get = [&](int l, int r) { long long total = 0; for (int i = l; i <= r; ++i) { if (!x[i]) x[i] = skim(i); total += x[i]; } return total; }; int l = k, r = n; while (l <= r) { int mid = l + r >> 1; auto value = get(mid - k + 1, mid); if (a <= value && value <= 2 * a) { for (int i = mid - k + 1; i <= mid; ++i) ret.push_back(i); answer(ret); return; } if (value < a) l = mid + 1; else r = mid - 1; } } impossible(); }

Compilation message (stderr)

books.cpp: In function 'void solve(int, int, long long int, int)':
books.cpp:25:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   25 |       int mid = l + r >> 1;
      |                 ~~^~~
books.cpp:52:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   52 |       int mid = l + r >> 1;
      |                 ~~^~~
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