Submission #320032

#	Time	Username	Problem	Language	Result	Execution time	Memory
320032		Hemimor	Brunhilda’s Birthday (BOI13_brunhilda)	C++14	8.89 / 100	677 ms	114960 KiB

brunhilda

#include <algorithm>
#include <iostream>
#include <iomanip>
#include <numeric>
#include <cassert>
#include <vector>
#include <cmath>
#include <queue>
#include <set>
#include <map>
#define syosu(x) fixed<<setprecision(x)
using namespace std;
typedef long long ll;
typedef unsigned int uint;
typedef unsigned long long ull;
typedef pair<int,int> P;
typedef pair<double,double> pdd;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<double> vd;
typedef vector<vd> vvd;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<string> vs;
typedef vector<P> vp;
typedef vector<vp> vvp;
typedef vector<pll> vpll;
typedef pair<int,P> pip;
typedef vector<pip> vip;
const int inf=1<<30;
const ll INF=1ll<<60;
const double pi=acos(-1);
const double eps=1e-8;
const ll mod=1e9+7;
const int dx[4]={-1,0,1,0},dy[4]={0,-1,0,1};

const int M=1000001;
int n,q,res[M];
vi a;

int main(){
	scanf("%d%d",&n,&q);
	a=vi(n);
	for(int i=0;i<n;i++) scanf("%d",&a[i]);
	int mx=a[n-1];
	fill(res,res+mx,1);
	fill(res+mx,res+M,inf);
	multiset<int> st;
	vvi b(M);
	for(auto i:a){
		st.insert(1);
		b[(mx+i-1)/i*i].push_back(i);
	}
	for(int i=mx;i<M;i++){
		for(auto j:b[i]){
			int x=res[i-j];
			st.erase(st.find(x));
			b[i+j].push_back(j);
		}
		if(!st.empty()) res[i]=min(inf,1+*st.begin());
		for(auto j:b[i]) st.insert(res[i]);
	}
	for(int i=0;i<q;i++){
		int x;
		scanf("%d",&x);
		if(res[x]==inf) printf("oo\n");
		else printf("%d\n",res[x]);
	}
}

Compilation message (stderr)

brunhilda.cpp: In function 'int main()':
brunhilda.cpp:62:12: warning: unused variable 'j' [-Wunused-variable]
   62 |   for(auto j:b[i]) st.insert(res[i]);
      |            ^
brunhilda.cpp:43:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   43 |  scanf("%d%d",&n,&q);
      |  ~~~~~^~~~~~~~~~~~~~
brunhilda.cpp:45:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   45 |  for(int i=0;i<n;i++) scanf("%d",&a[i]);
      |                       ~~~~~^~~~~~~~~~~~
brunhilda.cpp:66:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   66 |   scanf("%d",&x);
      |   ~~~~~^~~~~~~~~

• Subtask 1: 8.88888888888889 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 60