First attempt at doing some problems

.gitignore

@@ -0,0 +1 @@
+build

phase3/2021/ogro.cpp

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+#include <bits/stdc++.h>
+
+using namespace std;
+
+#define V vector
+
+#define rmin(a, b) a = min(a, b)
+#define rmax(a, b) a = max(a, b)
+
+#define rep(i, lim) for (size_t i = 0; i < (lim); i++)
+#define nrep(i, s, lim) for (size_t i = s; i < (lim); i++)
+
+#define repv(i, v) for (auto &i : (v)) 
+#define fillv(v) for (auto &itr_ : (v)) { cin >> itr_; }
+#define sortv(v) sort(v.begin(), v.end())
+#define all(v) (v).begin(), (v).end()
+
+using vi = vector<int>;
+using vvi = vector<vi>;
+using vvvi = vector<vvi>;
+using vvvvi = vector<vvvi>;
+
+using ll = long long;
+
+using vl = vector<ll>;
+using vvl = vector<vl>;
+using vvvl = vector<vvl>;
+using vvvvl = vector<vvvl>;
+
+template<class v>
+auto operator<<(ostream &os, const vector<v> &vec)->ostream& {
+    os << vec[0];
+    for (size_t i = 1; i < vec.size(); i++) {
+        os << ' ' << vec[i];
+    }
+    os << '\n';
+    return os;
+}
+
+template<class v>
+auto operator>>(istream &is, vector<v> &vec)->istream& {
+    for (auto &i : vec) {
+        is >> i;
+    }
+    return is;
+}
+
+template<class v>
+auto operator<<(ostream &os, const vector<vector<v>> &vec)->ostream& {
+    for (auto &i : vec) {
+        os << i[0];
+        for (size_t j = 1; j < i.size(); j++) {
+            os << ' ' << i[j];
+        }
+        os << '\n';
+    }
+    return os;
+}
+
+template<class v>
+auto operator>>(istream  &is, vector<vector<v>> &vec)->istream& {
+    for (auto &i : vec) {
+        for (auto &j : i) {
+            is >> j;
+        }
+    }
+    return is;
+}
+
+int main()
+{
+    int n;
+    cin >> n;
+
+    if (n == 0) {
+        cout << "*\n";
+    } else {
+        for (size_t i = 0; i < n && i < 5; i++) {
+            cout << 'I';
+        }
+        cout << '\n';
+        n = max(0, n - 5);
+    }
+    if (n == 0) {
+        cout << "*\n";
+    } else {
+        for (size_t i = 0; i < n && i < 5; i++) {
+            cout << 'I';
+        }
+        cout << '\n';
+        n = min(0, n - 5);
+    }
+}

phase3/2021/teclado.cpp

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+#include <bits/stdc++.h>
+
+using namespace std;
+
+#define V vector
+
+#define rmin(a, b) a = min(a, b)
+#define rmax(a, b) a = max(a, b)
+
+#define rep(i, lim) for (size_t i = 0; i < (lim); i++)
+#define nrep(i, s, lim) for (size_t i = s; i < (lim); i++)
+
+#define repv(i, v) for (auto &i : (v))
+#define fillv(v) for (auto &itr_ : (v)) { cin >> itr_; }
+#define sortv(v) sort(v.begin(), v.end())
+#define all(v) (v).begin(), (v).end()
+
+using vi = vector<int>;
+using vvi = vector<vi>;
+using vvvi = vector<vvi>;
+using vvvvi = vector<vvvi>;
+
+using ll = long long;
+
+using vl = vector<ll>;
+using vvl = vector<vl>;
+using vvvl = vector<vvl>;
+using vvvvl = vector<vvvl>;
+
+template<class v>
+auto operator<<(ostream &os, const vector<v> &vec)->ostream& {
+    os << vec[0];
+    for (size_t i = 1; i < vec.size(); i++) {
+        os << ' ' << vec[i];
+    }
+    os << '\n';
+    return os;
+}
+
+template<class v>
+auto operator>>(istream &is, vector<v> &vec)->istream& {
+    for (auto &i : vec) {
+        is >> i;
+    }
+    return is;
+}
+
+template<class v>
+auto operator<<(ostream &os, const vector<vector<v>> &vec)->ostream& {
+    for (auto &i : vec) {
+        os << i[0];
+        for (size_t j = 1; j < i.size(); j++) {
+            os << ' ' << i[j];
+        }
+        os << '\n';
+    }
+    return os;
+}
+
+template<class v>
+auto operator>>(istream  &is, vector<vector<v>> &vec)->istream& {
+    for (auto &i : vec) {
+        for (auto &j : i) {
+            is >> j;
+        }
+    }
+    return is;
+}
+
+int main()
+{
+    ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    int pip[256];
+    pip['a'] = '2';
+    pip['b'] = '2';
+    pip['c'] = '2';
+    pip['d'] = '3';
+    pip['e'] = '3';
+    pip['f'] = '3';
+    pip['g'] = '4';
+    pip['h'] = '4';
+    pip['i'] = '4';
+    pip['j'] = '5';
+    pip['k'] = '5';
+    pip['l'] = '5';
+    pip['m'] = '6';
+    pip['n'] = '6';
+    pip['o'] = '6';
+    pip['p'] = '7';
+    pip['q'] = '7';
+    pip['r'] = '7';
+    pip['s'] = '7';
+    pip['u'] = '8';
+    pip['t'] = '8';
+    pip['v'] = '8';
+    pip['w'] = '9';
+    pip['x'] = '9';
+    pip['y'] = '9';
+    pip['z'] = '9';
+
+    string a;
+    cin >> a;
+
+    int n;
+    cin >> n;
+    int count = 0;
+    while (n--) {
+        string b;
+        cin >> b;
+        if (b.size() != a.size()) {
+            continue;
+        }
+
+        bool valid = true;
+        for (size_t i = 0; i < a.size() && valid; i++) {
+            if (pip[b[i]] != a[i]) {
+                valid = false;
+            }
+        }
+
+        if (valid) {
+            count++;
+        }
+    }
+
+    cout << count << '\n';
+}