Add files and test template

.gitignore

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+.vscode
+.DS_Store
+input.txt

A. Perfect Root.cpp

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+// https://codeforces.com/contest/2185/problem/A
+
+// #define FAST_EXECUTION
+// #define INTERACTIVE_MODE
+
+#include <algorithm>
+#include <cmath>
+#include <cstdio>
+#include <iostream>
+#include <map>
+#include <string>
+#include <unordered_map>
+#include <unordered_set>
+#include <set>
+#include <vector>
+#include <stack>
+
+// https://github.com/coder3101/cf-template/blob/master/template.cc
+const long long INF = 9223372036854775807;
+const long long MOD = 1e9 + 7;
+
+#ifndef ONLINE_JUDGE
+#define WATCH(key, val)\
+  printf("Watched %s ->  %s \n", key, std::to_string(val).c_str());
+#define WATCH_CONTAINER(key, val)\
+  printf("Watched %s : ", key);\
+  for (auto e : val)\
+    printf(" %s", std::to_string(e).c_str());\
+  printf("\n");
+#define WATCH_MAP(map)\
+  printf("Watching Map\n");\
+  for (auto e : map)\
+    printf("%s -> %s\n", std::to_string(e.first).c_str(),\
+          std::to_string(e.second).c_str());\
+  printf("\n");
+#else
+#define WATCH(key, val)\
+  do {\
+  } while (false);
+#define WATCH_CONTAINER(key, val)\
+  do {\
+  } while (false);
+#define WATCH_MAP(map)\
+  do {\
+  } while (false);
+#endif
+
+#ifdef FAST_EXECUTION
+#pragma GCC optimize("O3")
+#pragma comment(linker, "/stack:247474112")
+#endif
+
+#define REP(n) for(int t=0; t<n; t++)
+#define FOR(i, n) for (i = 0; i < n; i++)
+#define FFOR(i, j, n) for(i = j; j < n; j++)
+#define FOR_S(i, n, k) for (i = 0; i < n; i += k)
+#define RFOR(i, n) for (i = n - 1; i >= 0; i--)
+#define RFOR_S(i, n, k) for (i = n - 1; i >= 0; i -= k)
+#define MAX_OF(x, y) ((x > y) ? x : y)
+#define MIN_OF(x, y) ((x > y) ? y : x)
+#define MIN_IN(A) *(std::min_element(A.begin(), A.end()));
+#define MAX_IN(A) *(std::max_element(A.begin(), A.end()));
+#define MAX_AT(A) (std::max_element(A.begin(), A.end()) - A.begin());
+#define MIN_AT(A) (std::min_element(A.begin(), A.end()) - A.begin());
+#define TESTCASE\
+  int testcase;\
+  std::cin>>testcase;\
+  while(testcase--)
+#define GCD(a,b) std::__gcd(a,b);
+#define LCM(a,b) (a)*((b)/std::__gcd(a,b));
+#define SORT(A) std::sort(A.begin(), A.end());
+#define RSORT(A) std::sort(A.rbegin(), A.rend());
+#define REVERSE(A) std::reverse(A.begin(), A.end());
+#define ANY(container, result, condition)\
+  result = false;\
+  for (const auto &e : container)\
+    if (condition(e)) {\
+      result = true;\
+      break;\
+    }
+#define ALL(container, result, condition)\
+  result = true;\
+  for (const auto &e : container)\
+    if (!condition(e)) {\
+      result = false;\
+      break;\
+    }
+#ifdef INTERACTIVE_MODE
+#define iprint(...)\
+  printf(__VA_ARGS__);\
+  fflush(stdout);
+#else
+#define iprint(...) printf(__VA_ARGS__);
+#endif
+
+#define LL long long
+#define L long
+#define ULL unsigned long long
+#define I int
+#define D double
+#define UI unsigned int
+#define VEC(i) std::vector<i>
+#define MAP(a, b) std::map<a, b>
+#define UMAP(a, b) std::unordered_map<a, b>
+#define SET(a) std::set<a>
+#define USET(a) std::unordered_set<a>
+#define MSET(a) std::multiset<a>
+#define STR std::string
+#define PAIR(a,b) std::pair<a,b>
+#define PAIRI std::pair<int, int>
+#define READ_INT(var) scanf("%d", &var)
+#define READ_STR(var) std::cin >> var
+#define READ_LONG(var) scanf("%lld", &var)
+#define WRITE_INT(var) printf("%d", var)
+#define WRITE_LONG(var) printf("%lld", var)
+#define WRITE_STR(var) std::cout << var
+#define WRITE_VEC_LL(val)\
+  for (auto e : val)\
+    printf("%lld ", e);
+#define WRITE_VEC_I(val)\
+  for (auto e : val)\
+    printf("%d ", e);
+    
+#define pb push_back
+#define eb emplace_back
+
+LL power(LL x, ULL y) {
+  LL res = 1;
+  x = x % MOD; 
+  while (y > 0) {  
+    if (y & 1) 
+      res = (res*x) % MOD;  
+    y = y>>1;
+    x = (x*x) % MOD;   
+  } 
+  return res; 
+}
+
+const int N = 1e9;
+
+int main() {
+  TESTCASE {
+    int n;
+    READ_INT(n);
+    int i;
+    int j = 1;
+    FFOR(i, j, n + 1) {
+      WRITE_INT(j * j);
+      printf(" ");
+    }
+    printf("\n");
+  }
+    
+  return 0;
+}

README.md

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+```bash
+g++ "code.cpp" -o a.out && ./a.out < input.txt && rm a.out
+```