Submission #1158468

#	Time	Username	Problem	Language	Result	Execution time	Memory
1158468		zhasyn	Horses (IOI15_horses)	C++20	0 / 100	25 ms	12624 KiB

horses

#include <bits/stdc++.h>
#include "horses.h"
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define pb push_back
#define pf push_front
using namespace std;
using namespace __gnu_pbds;
#define F first
#define S second
typedef long long ll;
#define pii pair <int, int>
#define pll pair <ll, ll>
typedef long double ld;
const ll N = 1e5 + 100, M = 2 * 1e6 + 100, len = 21, inf = 1e18;
const ll mod = 1e9 + 7;
ll um(ll a, ll b){
	return (1LL * a * b) % mod;
}
ll subr(ll a, ll b){
	return ((1LL * a - b) % mod + mod) % mod;
}
typedef tree<int,null_type,less_equal<int>,rb_tree_tag,tree_order_statistics_node_update>o_set;

int init(int n, int x[], int p[]) {
    vector <pll> vec;
    for(int i = 0; i < n; i++){
        while((ll)vec.size() != 0){
            pll v = vec.back();
            if(p[i] > v.F){
                x[i] = um(x[i], v.S);
                vec.pop_back();
            }else break;
        }
        vec.pb({p[i], x[i]});
    }
    ll ans = 0;
    for(int i = 0; i < (int)vec.size() - 1; i++){
        if(vec[i].F > vec[i + 1].F * vec[i + 1].S){
            ans += um(vec[i].F, vec[i].S - 1);
            ans %= mod;
        } else vec[i + 1].S = um(vec[i + 1].S, vec[i].S);
    }
    int last = (int)vec.size() - 1;
    ans += um(vec[last].F, vec[last].S);
    ans %= mod;
	return ans;
}

int updateX(int pos, int val) {

	return 0;
}

int updateY(int pos, int val) {

	return 0;
}

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