Submission #310454

#	Time	Username	Problem	Language	Result	Execution time	Memory
310454		juggernaut	Horses (IOI15_horses)	C++14	100 / 100	301 ms	54264 KiB

horses

#include"horses.h"
#include<bits/stdc++.h>
//#include"grader.cpp"
using namespace std;
typedef long long int ll;
ll mod=1e9+7;
struct node{
    struct temp1{
        double res,x,y;
    }lg;
    struct temp2{
        ll res,x,y;
    }md;
}tree[1<<20];
void up(int v){
    if(!v)return;
    int x=(v<<1),y=x+1;
    tree[v].lg.x=tree[x].lg.x+tree[y].lg.x,tree[v].md.x=(tree[x].md.x*tree[y].md.x)%mod;
    if(tree[x].lg.res>=tree[x].lg.x+tree[y].lg.res)tree[v].lg.res=tree[x].lg.res,tree[v].md.res=tree[x].md.res;
    else tree[v].lg.res=tree[x].lg.x+tree[y].lg.res,tree[v].md.res=(tree[x].md.x*tree[y].md.res)%mod;
    up(v>>1);
}
void update(int v,int x,int y){
    v+=(1<<19);
    if(x)tree[v].md.x=x,tree[v].lg.x=log2(x);
    if(y)tree[v].md.y=y,tree[v].lg.y=log2(y);
    tree[v].md.res=(tree[v].md.x*tree[v].md.y)%mod,tree[v].lg.res=tree[v].lg.x+tree[v].lg.y;
    up(v>>1);
}
int init(int N,int X[],int Y[]){
	for(int i=0;i<N;i++)update(i,X[i],Y[i]);
	return tree[1].md.res;
}
int updateX(int pos,int val){
    update(pos,val,0);
    return tree[1].md.res;
}
int updateY(int pos,int val){
    update(pos,0,val);
    return tree[1].md.res;
}

Compilation message (stderr)

horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:32:20: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   32 |  return tree[1].md.res;
      |         ~~~~~~~~~~~^~~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:36:23: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   36 |     return tree[1].md.res;
      |            ~~~~~~~~~~~^~~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:40:23: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   40 |     return tree[1].md.res;
      |            ~~~~~~~~~~~^~~

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