Submission #897570

#TimeUsernameProblemLanguageResultExecution timeMemory
897570ThylOneRice Hub (IOI11_ricehub)C++14
100 / 100
11 ms4700 KiB
#include "ricehub.h" #include<bits/stdc++.h> using namespace std; vector<int> pos; vector<long long> pref; long long budget; int limit; bool existWithT(int T){ auto findGoodSegment = [&](int l,int r){ int best = pos[(l+r)/2]; int pos_best = (l+r)/2; long long right_part=pref[r]-pref[pos_best]; right_part-= (r-pos_best)*best; //cout<<"r"<<right_part<<endl; long long left_part=(pos_best-l+1)*best; left_part-=(pref[pos_best]-(l==0?0:pref[l-1])); //cout<<"l"<<left_part<<endl; long long computedScore = right_part+left_part; if(computedScore<=budget)return true; return false; }; if(findGoodSegment(0,T-1))return true; for(int right=T;right<pos.size();right++){ if(findGoodSegment(right-T+1,right))return true; } return false; } int besthub(int R, int L, int X[], long long B) { budget = B; pos.resize(R); pref.resize(R); limit = L; long long act=0; for(int i = 0;i<R;i++){ pos[i] = X[i]; act+=pos[i]; pref[i]=act; } sort(pos.begin(),pos.end()); int low = 1; int high = R; while ((high-low)>1){ int mid = (low+high)/2; if(existWithT(mid)){ low = mid; }else{ high = mid; } } if(existWithT(high)){ return high; }else{ return low; } }

Compilation message (stderr)

ricehub.cpp: In function 'bool existWithT(int)':
ricehub.cpp:29:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |       for(int right=T;right<pos.size();right++){
      |                       ~~~~~^~~~~~~~~~~
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