제출 #259347

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
259347	2020-08-07 16:17:56	IOrtroiii	Horses (IOI15_horses)	C++14	100 / 100	344 ms	75000 KiB

horses

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#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
const int MX = 1 << 19;
int N;
int X[MX], Y[MX];
pair<ld, int> best[MX << 2];
ld sum[MX << 2];
void pop(int v) {
   best[v] = max(best[v << 1], make_pair(best[v << 1 | 1].first + sum[v << 1], best[v << 1 | 1].second));
   sum[v] = sum[v << 1] + sum[v << 1 | 1];
}
void init(int v, int l, int r) {
   if (l == r) {
      best[v] = make_pair(log(X[l]) + log(Y[l]), l);
      sum[v] = log(X[l]);
      return;
   }
   int md = (l + r) >> 1;
   init(v << 1, l, md);
   init(v << 1 | 1, md + 1, r);
   pop(v);
 
 
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컴파일 시 표준 에러 (stderr) 메시지

horses.cpp: In function 'int mult(int, int)':
horses.cpp:47:43: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
 int mult(int x, int y) { return ll(x) * y % MOD; }
                                 ~~~~~~~~~~^~~~~
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:78:36: warning: declaration of '_N' shadows a global declaration [-Wshadow]
 int init(int _N, int _X[], int _Y[]) {
                                    ^
horses.cpp:50:5: note: shadowed declaration is here
 int _N;
     ^~

• Subtask 1: 17 / 17
• Subtask 2: 17 / 17
• Subtask 3: 20 / 20
• Subtask 4: 23 / 23
• Subtask 5: 23 / 23