Submission #1053791

#	Time	Username	Problem	Language	Result	Execution time	Memory
1053791		Osplei	Horses (IOI15_horses)	C++17	17 / 100	915 ms	524288 KiB

horses

#include "horses.h"
#include <bits/stdc++.h>

using namespace std;

typedef int ll;
typedef pair <ll, ll> LL;

#define F first
#define S second

ll mod = 1e9 + 7;

int init(int N, int X[], int Y[]) {
  //pos ans  tengo
  queue <pair <ll, LL>> q;
  ll ans = 0;

  q.push({-1, {0, 1}});

  while (!q.empty()) {
    pair <ll, LL> act;
    act = q.front();
    ans = max(ans, act.S.F);
    
    q.pop();

    if (act.F + 1 >= N) continue;

    q.push({act.F + 1, {act.S.F % mod, (act.S.S * X[act.F + 1]) % mod}});
    q.push({act.F + 1, {((act.S.F % mod) + (((((act.S.S * X[act.F + 1]) % mod) - 1) * Y[act.F + 1]) % mod)) % mod, 1}});
    
    ans = max(ans, ((act.S.F % mod) + ((((act.S.S * X[act.F + 1]) % mod) * Y[act.F + 1]) % mod)) % mod);
  }

	return ans % mod;
}

int updateX(int pos, int val) {	
	return 0;
}

int updateY(int pos, int val) {
	return 0;
}

Compilation message (stderr)

horses.cpp: In function 'int updateX(int, int)':
horses.cpp:39:17: warning: unused parameter 'pos' [-Wunused-parameter]
   39 | int updateX(int pos, int val) {
      |             ~~~~^~~
horses.cpp:39:26: warning: unused parameter 'val' [-Wunused-parameter]
   39 | int updateX(int pos, int val) {
      |                      ~~~~^~~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:43:17: warning: unused parameter 'pos' [-Wunused-parameter]
   43 | int updateY(int pos, int val) {
      |             ~~~~^~~
horses.cpp:43:26: warning: unused parameter 'val' [-Wunused-parameter]
   43 | int updateY(int pos, int val) {
      |                      ~~~~^~~

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