Submission #947651

#TimeUsernameProblemLanguageResultExecution timeMemory
947651veljkoSelf Study (JOI22_ho_t2)C++17
0 / 100
3 ms604 KiB
/*****from dust I have come, dust I will be*****/ #include<bits/stdc++.h> #include<ext/pb_ds/assoc_container.hpp> #include<ext/pb_ds/tree_policy.hpp> using namespace __gnu_pbds; using namespace std; #define int long long #define forn(i,n) for(int i=0;i<n;i++) int dx[8] = { 1, 0, -1, 0, -1, 1, -1, 1 }; int dy[8] = { 0, 1, 0, -1, -1, 1, 1, -1 }; int ceil_div(int a, int b) {return a % b == 0 ? a / b : a / b + 1;} const int MOD = 1000000007; //const int MOD = 998244353; typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> pbds; // find_by_order, order_of_key /* int k = A.order_of_key(p[i].second); A.erase(A.find_by_order(k)); erase element from pbds multiset */ bool ok(vector<int>&a, int n, int v, int target){ forn(i,n){ int x = ceil_div(target, a[i]); v -= x; } return (v >= 0); } int binary(vector<int>&a, int n, int v){ int l = 0, r = 5 * 1e13; int ans = 0; while (l <= r){ int mid = (l + r) / 2; if (ok(a, n, v, mid)){ ans = mid; l = mid + 1; } else r = mid - 1; } return ans; } void solve(){ int n, m; cin >> n >> m; vector<int>a(n); for (auto &t : a) cin >> t; vector<int>b(n); for (auto &t : b) cin >> t; cout << binary(a, n, n*m)<<'\n'; } int32_t main(){ ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); #ifndef ONLINE_JUDGE freopen("input.txt", "r", stdin); freopen("output.txt", "w", stdout); #endif int t = 1; //cin >>t; for (int i=1;i<=t;i++){ solve(); } return 0; }

Compilation message (stderr)

Main.cpp: In function 'int32_t main()':
Main.cpp:59:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   59 |         freopen("input.txt", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:60:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   60 |         freopen("output.txt", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
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