Submission #552313

#	Time	Username	Problem	Language	Result	Execution time	Memory
552313		tmp	Combo (IOI18_combo)	C++14	5 / 100	1 ms	208 KiB

combo

#include<bits/stdc++.h>
#define maxn 10005
#define oo 1000000007
#define ff first
#define ss second
#define sci(x) scanf("%d", &x)
#define scii(x, y) scanf("%d %d", &x, &y)
#define fto(i, a, b) for(int i = a; i <= b; ++i)
#define fdto(i, a, b) for(int i = a; i >= b; --i)
#define pri(x) printf("%d ", x);
#define pril(x) printf("%d\n", x);
#define sz(a) (int)a.size()
#define ii pair<int, int>
#define vi vector<int>
#define vii vector<ii>
#define pb push_back
#define ll long long
#define db double
#define mp make_pair
#define fast cin.sync_with_stdio(0); cin.tie(0)

using namespace std;

//int press(string p);

int press(string p);
//    cout << p << endl;
//    int x;
//    cin >> x;
//    return x;
//}

string guess_sequence(int n) {
    string p = "";
    vector<char> e, tmp;
    e.pb('A');
    e.pb('B');
    e.pb('X');
    e.pb('Y');
    char check;
    int coins = 0;
    fto(i, 0, 2){
        if (press(p+e[i])){
            coins = 1;
            p += e[i];
            check = e[i];
            break;
        }
    }
    if (coins == 0){
        coins = 1;
        check = e[3];
        p += e[3];
    }
    for (int j = 0; j < sz(e); ++j){
        if (check == e[j]) continue;
        else tmp.pb(e[j]);
    }
  while(1){
    bool dk = 0;
    for (int x = 1; x < sz(tmp); ++x){
        if (check == tmp[x]) continue;
        if (press(p+tmp[x]) > coins){
            ++coins;
            p += tmp[x];
            dk = 1;
            break;
        }
    }
    if (dk == 0 && check != tmp[0]){
        p += tmp[0];
        ++coins;
    }
    if (coins == n) return p;
  }
  return p;
}

//int main(){
//    int n;
//    cin >> n;
//    cout << guess_sequence(n) << endl;
//}

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