제출 #494010

#제출 시각아이디문제언어결과실행 시간메모리
494010Leo121쌀 창고 (IOI11_ricehub)C++14
100 / 100
14 ms1064 KiB
#include "ricehub.h" typedef long long ll; int arre[100002]; ll presupuesto; int campos; bool probar(int campos_arroz){ ll aux = 0; int centro = campos_arroz / 2; if(campos_arroz % 2 == 0){ centro --; } for(int i = 0; i < campos_arroz; ++i){ ll aux2 = (ll) arre[centro] - (ll) arre[i]; if(aux2 < 0){ aux2 *= -1LL; } aux += aux2; } if(aux <= presupuesto){ return 1; } for(int i = campos_arroz; i < campos; ++i){ centro++; aux -= ((ll) arre[centro - 1] - (ll) arre[i - campos_arroz]); aux += ((ll) arre[i] - (ll) arre[centro]); if(campos_arroz % 2 == 0 && campos_arroz != 2){ aux -= ((ll) arre[centro] - (ll) arre[centro - 1]); } if(aux <= presupuesto){ return 1; } } return 0; } int bs(int li, int ls){ int mitad, resbs = 0; while(li <= ls){ mitad = (li + ls) / 2; if(probar(mitad)){ resbs = mitad; li = mitad + 1; } else{ ls = mitad - 1; } } return resbs; } int besthub(int R, int L, int X[], long long B) { presupuesto = B; for(int i = 0; i < R; ++i){ arre[i] = X[i]; } campos = R; return bs(1, R); }
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