Submission #154841

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
154841	2019-09-25 08:21:35	junodeveloper	Horses (IOI15_horses)	C++14	100 / 100	569 ms	49436 KiB

horses

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#include "horses.h"
#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
 
const int off=1<<19;
const int mod=1e9+7;
 
struct MULT {
  int tree[off<<1];
  MULT() {memset(tree,0,sizeof(tree));}
  void update(int p,int x) {
    p+=off;
    tree[p]=x;p/=2;
    while(p>0) {
      tree[p]=(ll)tree[p<<1]*tree[p<<1|1]%mod;
      p>>=1;
    }
  }
  int query(int l,int r) {
    int ret=1;
    l+=off,r+=off;
    while(l<r) {
      if(l%2==1) ret=(ll)ret*tree[l++]%mod;
      if(r%2==0) ret=(ll)ret*tree[r--]%mod;
      l>>=1,r>>=1;
    }
    if(l==r) ret=(ll)ret*tree[l]%mod;
    return ret;
 
 
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Compilation message (stderr)

horses.cpp: In member function 'void MULT::update(int, int)':
horses.cpp:17:39: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
    tree[p]=(ll)tree[p<<1]*tree[p<<1|1]%mod;
            ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
horses.cpp: In member function 'int MULT::query(int, int)':
horses.cpp:25:36: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
    if(l%2==1) ret=(ll)ret*tree[l++]%mod;
                   ~~~~~~~~~~~~~~~~~^~~~
horses.cpp:26:36: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
    if(r%2==0) ret=(ll)ret*tree[r--]%mod;
                   ~~~~~~~~~~~~~~~~~^~~~
horses.cpp:29:31: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
   if(l==r) ret=(ll)ret*tree[l]%mod;
                ~~~~~~~~~~~~~~~^~~~
horses.cpp: In function 'int solve()':
horses.cpp:80:33: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
  return (ll)mult.query(0,fir)*mx%mod;
         ~~~~~~~~~~~~~~~~~~~~~~~~^~~~

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