Submission #466837

#	Time	Username	Problem	Language	Result	Execution time	Memory
466837		Carmel_Ab1	말 (IOI15_horses)	C++17	17 / 100	1584 ms	11976 KiB

horses

#include "horses.h"
#include<bits/stdc++.h>
using namespace std;
typedef unsigned long long ll;
typedef vector<ll> vl;

//#include "grader.cpp"



vl x,y;
void chkmax(ll& ans,ll has,ll p){
    ll mod=1e9+7;
    if(ans/p<has && ans/has<p)
        ans=((has)%mod*(p%mod))%mod;
}
int init(int n, int X[], int Y[]) {
    x.resize(n);
    y.resize(n);
    const ll mod=1e9+7;
    ll has=1,ans=0;

    for(int i=0; i<n; i++)
        x[i]=ll(1ll*X[i]),y[i]=ll(1ll*Y[i]);
    for(int i=0; i<n; i++){
        has*=x[i];
        chkmax(ans,has,y[i]);
        assert(ans<mod);
    }
    return int(ans);
}

int updateX(int pos, int val) {
    const ll mod=1e9+7;
    ll has=1,ans=0;
    x[pos]=ll(val);
    int n=x.size();
    for(int i=0; i<n; i++){
        has*=x[i];
        chkmax(ans,has,y[i]);
        assert(ans<mod);
    }
    return int(ans);
}

int updateY(int pos, int val) {
    const ll mod=1e9+7;
    ll has=1,ans=0;
    y[pos]=ll(val);
    int n=x.size();
    for(int i=0; i<n; i++){
        has*=x[i];
        chkmax(ans,has,y[i]);
        assert(ans<mod);
    }
    return int(ans);
}

Compilation message (stderr)

horses.cpp: In function 'int updateX(int, int)':
horses.cpp:37:17: warning: conversion from 'std::vector<long long unsigned int>::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   37 |     int n=x.size();
      |           ~~~~~~^~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:50:17: warning: conversion from 'std::vector<long long unsigned int>::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   50 |     int n=x.size();
      |           ~~~~~~^~

• Subtask 1: 17 / 17
• Subtask 2: 0 / 17
• Subtask 3: 0 / 20
• Subtask 4: 0 / 23
• Subtask 5: 0 / 23