Submission #934546

#	Time	Username	Problem	Language	Result	Execution time	Memory
934546		MilosMilutinovic	Floppy (RMI20_floppy)	C++14	100 / 100	73 ms	16144 KiB

floppy

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

#define pb push_back
#define fi first
#define se second
#define mp make_pair

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef long double ld;

template <typename T> bool chkmin(T &x,T y){return x>y?x=y,1:0;}
template <typename T> bool chkmax(T &x,T y){return x<y?x=y,1:0;}

ll readint(){
	ll x=0,f=1; char ch=getchar();
	while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
	while(ch>='0'&&ch<='9'){x=x*10+ch-'0';ch=getchar();}
	return x*f;
}

int go[100005][20];

void read_array(int subtask_id, const std::vector<int> &v){
	int n=(int)v.size();
	string ret="";
	vector<int> stk;
	for(int i=0;i<n;i++){
		while(!stk.empty()&&v[stk.back()]<v[i]){
			stk.pop_back();
			ret+='0';
		}
		ret+='1';
		stk.push_back(i);
	}
	save_to_floppy(ret);
}

vector<int> solve_queries(int subtask_id, int n,
        const std::string &bits,
        const std::vector<int> &a, const std::vector<int> &b){
	int q=a.size();
	vector<int> stk;
	int ptr=0;
	for(int i=0;i<n;i++){
		while(bits[ptr]=='0') stk.pop_back(),ptr++;
		go[i][0]=(stk.empty()?-1:stk.back());
		stk.push_back(i);
		ptr++;
	}
	for(int j=1;j<20;j++){
		for(int i=0;i<n;i++){
			go[i][j]=(go[i][j-1]==-1?-1:go[go[i][j-1]][j-1]);
		}
	}
	vector<int> res;
	for(int i=0;i<q;i++){
		int x=b[i];
		for(int j=19;j>=0;j--){
			if(go[x][j]>=a[i]){
				x=go[x][j];
			}
		}
		res.pb(x);
	}
	return res;
}

Compilation message (stderr)

stub.cpp: In function 'void run2()':
stub.cpp:101:30: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  101 |     if (query_answers.size() != M) {
      |         ~~~~~~~~~~~~~~~~~~~~~^~~~

• Subtask 1: 7 / 7
• Subtask 2: 21 / 21
• Subtask 3: 72 / 72