commit 6760ebf14ea39ff9dec78b6958b0de80e102d339
Author: Ta180m <ta180m@gmail.com>
Date:   Mon May 11 21:01:15 2020 -0500

    Add files via upload

diff --git a/pascal.cpp b/pascal.cpp
new file mode 100644
index 0000000..fd3b99d
--- /dev/null
+++ b/pascal.cpp
@@ -0,0 +1,43 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+int main() {
+	if (fopen("in", "r")) freopen("in", "r", stdin), freopen("out", "w", stdout);
+
+    int T;
+    cin >> T;
+    for (int t = 0; t < T; ++t) {
+        int N;
+        cin >> N;
+        cout << "Case #" << t + 1 << ":\n";
+        if (N <= 500) {
+            for (int i = 0; i < N; ++i) cout << i + 1 << " " << 1 << '\n';
+        }
+        else {
+            N -= 32;
+            int sum = 0;
+            bool side = 0;
+            for (int i = 0; i < 32; ++i) {
+                cout << i + 1 << " " << (side ? i + 1 : 1) << '\n';
+                if (N & (1 << i)) {
+                    if (side) {
+                        for (int j = i; j > 0; --j) cout << i + 1 << " " << j << '\n';
+                        side = 0;
+                    }
+                    else {
+						for (int j = 2; j <= i + 1; ++j) cout << i + 1 << " " << j << '\n';
+                        side = 1;
+					}
+					sum += (1 << i);                    
+                }
+				else ++sum;
+            }
+			int x = 32;
+			N += 32;
+			while (sum < N) {
+				cout << x + 1 << ' ' << (side ? x + 1 : 1) << '\n';
+				++x, ++sum;
+			}
+        }
+    }
+}
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diff --git a/pattern.cpp b/pattern.cpp
new file mode 100644
index 0000000..192c691
--- /dev/null
+++ b/pattern.cpp
@@ -0,0 +1,41 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+int main() {
+	if (fopen("in", "r")) freopen("in", "r", stdin), freopen("out", "w", stdout);
+
+    int T;
+    cin >> T;
+    for (int t = 0; t < T; ++t) {
+        int N;
+        cin >> N;
+        string P[55];
+        for (int i = 0; i < N; ++i) cin >> P[i];
+        
+        string a, b, c;
+        bool found = 1;
+        for (int i = 0; i < N && found; ++i) {
+            vector<string> v;
+			v.push_back("");
+            for (auto& c : P[i]) {
+                if (c == '*') v.push_back("");
+                else v.back() += c;
+            }
+            for (int j = 0; j < v.front().size() && found; ++j) {
+                if (j >= a.size()) a.push_back(v.front()[j]);
+                else if (v.front()[j] != a[j]) found = 0;
+            }
+            reverse(v.back().begin(), v.back().end());
+            for (int j = 0; j < v.back().size() && found; ++j) {
+                if (j >= c.size()) c.push_back(v.back()[j]);
+                else if (v.back()[j] != c[j]) found = 0;
+            }
+            for (int j = 1; j < v.size() - 1; ++j) b += v[j];
+        }
+        reverse(c.begin(), c.end());
+		
+        cout << "Case #" << t + 1 << ": ";
+        if (found) cout << a << b << c << '\n';
+        else cout << "*\n";
+    }
+}
\ No newline at end of file
diff --git a/square.cpp b/square.cpp
new file mode 100644
index 0000000..bc63ef1
--- /dev/null
+++ b/square.cpp
@@ -0,0 +1,77 @@
+#include <bits/stdc++.h>
+using namespace std;
+typedef long long ll;
+
+int main() {
+	if (fopen("in", "r")) freopen("in", "r", stdin), freopen("out", "w", stdout);
+
+    int T;
+    cin >> T;
+    for (int t = 0; t < T; ++t) {
+        int R, C;
+        cin >> R >> C;
+		cout << "Case #" << t + 1 << ": ";
+        
+		vector<vector<int>> S(R);
+        set<pair<int, int>> check;
+		vector<set<int>> rs(R), cs(C);
+		ll ans = 0, sum = 0;
+		for (int i = 0; i < R; ++i) {
+            S[i].resize(C);
+            for (int j = 0; j < C; ++j) {
+				cin >> S[i][j];
+				check.emplace(i, j);
+				sum += S[i][j];
+			}
+        }
+
+		for (int i = 0; i < R; ++i) {
+			for (int j = 0; j < C; ++j) rs[i].insert(j);
+		}
+		for (int j = 0; j < C; ++j) {
+			for (int i = 0; i < R; ++i) cs[j].insert(i);
+		}
+
+		while (1) {
+			vector<pair<int, int>> elim;
+			for (auto& x : check) {
+				int i = x.first, j = x.second;
+				if (S[i][j]) {
+					int cnt = 0, num = 0;
+					auto r = cs[j].find(i);
+					if (r != cs[j].end()) {
+						if (r != cs[j].begin()) cnt += S[*(--r)][j], ++num, ++r;
+						if (r != --cs[j].end()) cnt += S[*(++r)][j], ++num;
+					}
+					auto c = rs[i].find(j);
+					if (c != rs[i].end()) {
+						if (c != rs[i].begin()) cnt += S[i][*(--c)], ++num, ++c;
+						if (c != --rs[i].end()) cnt += S[i][*(++c)], ++num;
+					}
+					if (num * S[i][j] < cnt) elim.emplace_back(i, j);
+				}
+			}
+			check.clear();
+			ans += sum;
+			for (auto& x : elim) {
+				int i = x.first, j = x.second, cnt = 0, num = 0;
+				sum -= S[i][j];
+				S[i][j] = 0;
+				auto r = cs[j].find(i);
+				if (r != cs[j].end()) {
+					if (r != cs[j].begin()) check.emplace(*(--r), j), ++r;
+					if (r != --cs[j].end()) check.emplace(*(++r), j);
+				}
+				auto c = rs[i].find(j);
+				if (c != rs[i].end()) {
+					if (c != rs[i].begin()) check.emplace(i, *(--c)), ++c;
+					if (c != --rs[i].end()) check.emplace(i, *(++c));
+				}
+				rs[i].erase(j);
+				cs[j].erase(i);
+			}
+			if (elim.empty()) break;
+		}
+        cout << ans << '\n';
+    }
+}
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