Submission #313907

#	Time	Username	Problem	Language	Result	Execution time	Memory
313907		Fidisk	Combo (IOI18_combo)	C++14	5 / 100	1 ms	256 KiB

combo

#include <bits/stdc++.h>
#include <combo.h>
using namespace std;
 
#define oo 1e18
#define fi first
#define se second
#define sp(iiii) setprecision(iiii)
#define IO ios_base::sync_with_stdio(false); cin.tie(0)
#define ms(aaaa,xxxx) memset(aaaa,xxxx,sizeof(aaaa))
#define cntbit(xxxx) __builtin_popcount(xxxx)
#define getbit(xxxx,aaaa) ((xxxx>>(aaaa-1))&1)
 
typedef long double ld;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> pii;
typedef pair<pair<int,int>,int> piii;
typedef pair<long long,long long> pll;
typedef pair<pair<long long,long long>,long long> plll;
 
const ll mod=1e9+7;
 
char st,s1,s2,s3;
string ans;
int i,k;
 
string guess_sequence(int n) {
    if (press("AB")>0) {
        if (press("A")>0) {
            st='A';
        }
        else {
            st='B';
        }
    }
    else {
        if (press("X")>0) {
            st='X';
        }
        else {
            st='Y';
        }
    }
    if (st=='A') {
        s1='B';
        s2='X';
        s3='Y';
    }
    else if (st=='B') {
        s1='A';
        s2='X';
        s3='Y';
    }
    else if (st=='X') {
        s1='B';
        s2='A';
        s3='Y';
    }
    else if (st=='Y') {
        s1='B';
        s2='X';
        s3='A';
    }
    for (i=1;i<n-1;i++) {
        k=press(st+ans+s1+st+ans+s2+s1+st+ans+s2+s2+st+ans+s2+s3);
        if (k==(i+1)) {
            ans+=s1;
        }
        else if (k==(i+2)) {
            ans+=s2;
        }
        else {
            ans+=s3;
        }
    }
    if (press(st+ans+'A'+st+ans+'B')==n) {
        if (press(st+ans+'A')==n) {
            ans+='A';
        }
        else {
            ans+='B';
        }
    }
    else {
        if (press(st+ans+'X')==n) {
            ans+='X';
        }
        else {
            ans+='Y';
        }
    }
    return st+ans;
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 95