Submission #937893

#TimeUsernameProblemLanguageResultExecution timeMemory
937893LitusianoSelf Study (JOI22_ho_t2)C++17
0 / 100
289 ms7468 KiB
#include<bits/stdc++.h> using namespace std; #define int long long #define endl "\n" vector<pair<int,int>> v; int n,m; bool check(int mid){ vector<int> need(n,0); int left = 0; for(int i = 0; i<n; i++){ int z = max(v[i].first, v[i].second); int k = (mid+z-1)/z; need[i] = max(0ll,mid-(m * z)); left+=max(0ll,m-k); } for(int i = 0; i<n; i++){ if(need[i] <= 0) continue; left -= max(0ll,(need[i] + v[i].second - 1)/v[i].second); } return left>=0; } signed main(){ ios_base::sync_with_stdio(0); cin.tie(0); cin>>n>>m; v.resize(n); for(auto& x : v) cin>>x.first; //a for(auto& x : v) cin>>x.second; //b int l = 1; int r = 1e14; while(r > l+1){ int mid = (l+r)/2; if(check(mid)) l = mid; else r = mid; } cout<<l<<endl; }
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