Submission #438023

#	Time	Username	Problem	Language	Result	Execution time	Memory
438023		illyakr	Horses (IOI15_horses)	C++14	34 / 100	1596 ms	12060 KiB

horses

#include <bits/stdc++.h>
#include "horses.h"
using namespace std;
#define ll long long
const ll mod = 1000000007;
const ll mx = 1000000000000000018;

ll n;
ll x[501010], y[501010];
int gt() {
    ll cnt = y[n - 1];
    ll last = n - 1;
    for (int i = n - 1; i > 0; i--) {
        if (x[i] > mx / cnt)cnt = mx;
        else cnt *= x[i];

        if (cnt < y[i - 1]){last = i - 1;cnt = y[i - 1];}

        if (cnt == mx)break;
    }
    ll d = 1;
    for (int i = 0; i <= last; i++) {
        d = ((d % mod) * (x[i] % mod)) % mod;
    }
    return ((d % mod) * (y[last] % mod)) % mod;
}
int init(int N, int X[], int Y[]) {
	n = N;
	for (ll i = 0; i < n; i++) {
        x[i] = X[i];
        y[i] = Y[i];
	}
    return gt();
}

int updateX(int pos, int val) {
    x[pos] = val;
	return gt();
}

int updateY(int pos, int val) {
    y[pos] = val;
	return gt();
}

Compilation message (stderr)

horses.cpp: In function 'int gt()':
horses.cpp:13:20: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   13 |     for (int i = n - 1; i > 0; i--) {
      |                  ~~^~~
horses.cpp:25:42: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   25 |     return ((d % mod) * (y[last] % mod)) % mod;
      |            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~

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