oj.uz

Submission #249033

# Submission time Handle Problem Language Result Execution time Memory
249033 2020-07-14T07:51:27 Z Vladikus004 Igra (COCI17_igra) C++14
100 / 100
 1 ms 384 KB 
#include <bits/stdc++.h>
#define inf 2e9
#define all(v) v.begin(), v.end()
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair <int, int> pii;

const int N = 5000;
int n, cnt[3], ocnt[3];
string s, t;

bool can(){
    for (int i = 0; i < 3; i++){
        int sum = 0;
        for (int j = 0; j < 3; j++){
            if (i == j) continue;
            sum += ocnt[j];
        }
        if (cnt[i] > sum) return false;
    }
    return true;
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    #ifdef LOCAL
        freopen("input.txt", "r", stdin);
    #endif // LOCAL
    cin >> n >> t >> s;
    for (int i = 0; i < t.size(); i++) cnt[t[i] - 'a']++;
    for (int i = 0; i < s.size(); i++) ocnt[s[i] - 'a']++;
    vector <int> ans;
    for (int i = 0; i < s.size(); i++){
        for (int j = 0; j < 3; j++){
            if (cnt[j] && j != s[i] - 'a'){
                cnt[j]--;
                ocnt[s[i] - 'a']--;
                if (!can()){
                    cnt[j]++;
                    ocnt[s[i] - 'a']++;
                }else{
                    ans.push_back(j);
                    break;
                }
            }
        }
    }
    for (auto u: ans) cout << char(u + 'a');
}

Compilation message

igra.cpp: In function 'int main()':
igra.cpp:33:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < t.size(); i++) cnt[t[i] - 'a']++;
                     ~~^~~~~~~~~~
igra.cpp:34:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < s.size(); i++) ocnt[s[i] - 'a']++;
                     ~~^~~~~~~~~~
igra.cpp:36:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < s.size(); i++){
                     ~~^~~~~~~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct