Submission #639675

#	Time	Username	Problem	Language	Result	Execution time	Memory
639675		classic	Igra (COCI17_igra)	C++14	100 / 100	1 ms	596 KiB

igra

#include <bits/stdc++.h>
using namespace std;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;
    string s, t;
    cin >> s >> t;
    vector<int> cnt(3);
    for (int i = 0; i < n; i++) {
        cnt[s[i] - 'a'] += 1;
    }
    vector<vector<int>> suff(n + 1, vector<int>(3));
    suff[n - 1][t[n - 1] - 'a'] += 1;
    for (int i = n - 2; i >= 0; i--) {
        for (int j = 0; j < 3; j++) {
            suff[i][j] = suff[i + 1][j];
        }
        suff[i][t[i] - 'a'] += 1;
    }
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < 3; j++) {
            if (j == t[i] - 'a' || cnt[j] <= 0) {
                continue;
            }
            cnt[j] -= 1;
            bool ok = true;
            for (int x = 0; x < 3; x++) {
                for (int y = x + 1; y < 3; y++) {
                    int z = 3 - x - y;
                    if (cnt[x] + cnt[y] < suff[i + 1][z]) {
                        ok = false;
                    }
                    if (!ok) {
                        break;
                    }
                }
                if (!ok) {
                    break;
                }
            }
            if (ok) {
                cout << char(j + 'a');
                break;
            } else {
                cnt[j] += 1;
            }
        }
    }
    return 0;
}

• Subtask 1: 100 / 100