Submission #616125

#	Time	Username	Problem	Language	Result	Execution time	Memory
616125		rrrr10000	Ancient Books (IOI17_books)	C++14	22 / 100	2058 ms	14824 KiB

books

#include "books.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> P;
typedef vector<ll> vi;
typedef vector<vi> vvi;
typedef vector<P> vp;
typedef vector<vp> vvp;
typedef vector<bool> vb;
#define rep(i,n) for(ll i=0;i<(ll)(n);i++)
#define REP(i,k,n) for(ll i=(ll)(k);i<(ll)(n);i++)
#define all(a) a.begin(),a.end()
#define fi first
#define se second
#define lb(v,k) (lower_bound(all(v),k)-v.bein())
#define dupli(a) {sort(all(a));a.erase(unique(all(a)),a.end());}
template<class T> bool chmin(T&a,T b){if(a>b){a=b;return true;}return false;}
template<class T> bool chmax(T&a,T b){if(a<b){a=b;return true;}return false;}
template<class T> void out(T a){cout<<a<<endl;}
template<class T> void outv(T v){rep(i,v.size()){if(i)cout<<' ';cout<<v[i];}cout<<endl;}
const ll inf=1001001001001001001;

long long minimum_walk(std::vector<int> p, int s) {
	while(p.size()&&p.back()==p.size()-1)p.pop_back();
	ll n=p.size(),ans=0;
	rep(i,n-1){
		ll c=0;
		rep(j,i+1)if(p[j]>i)c++;
		if(c==0)c++;
		ans+=c;
	}
	return ans*2;
}

Compilation message (stderr)

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:25:26: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |  while(p.size()&&p.back()==p.size()-1)p.pop_back();
      |                  ~~~~~~~~^~~~~~~~~~~~

• Subtask 1: 12 / 12
• Subtask 2: 10 / 10
• Subtask 3: 0 / 28
• Subtask 4: 0 / 20
• Subtask 5: 0 / 30