Added Round 61 form CSacademy

Author: jhonber

csacademy/Round61/A.cpp

@@ -0,0 +1,18 @@
+#include<bits/stdc++.h>
+using namespace std;
+
+#define endl '\n'
+#define D(x) cout << #x << " = " << (x) << endl;
+
+int main() {
+#ifndef ONLINEJUDGE
+  ios_base::sync_with_stdio(0); cin.tie(0);
+#endif
+
+  double x;
+  cin >> x;
+
+  cout << (int)((x * 1.8) + 32) << endl;
+
+  return 0;
+}

csacademy/Round61/B.cpp

@@ -0,0 +1,38 @@
+#include<bits/stdc++.h>
+using namespace std;
+
+#define endl '\n'
+#define D(x) cout << #x << " = " << (x) << endl;
+
+int main() {
+#ifndef ONLINEJUDGE
+  ios_base::sync_with_stdio(0); cin.tie(0);
+#endif
+
+  int n;
+  cin >> n;
+
+  n *= 2;
+  vector<int> v(n);
+  for (int i = 0; i < n; ++i) cin >> v[i];
+
+  int a = 0;
+  bool cur = 0;
+  for (int i = 0; i < n; ++i) {
+    if (v[i] != cur) a ++;
+    cur = !cur;
+  }
+
+
+  a /= 2;
+  int b = 0;
+  cur = 1;
+  for (int i = 0; i < n; ++i) {
+    if (v[i] != cur) b ++;
+    cur = !cur;
+  }
+
+  b /= 2;
+  cout << min(a, b) << endl;
+  return 0;
+}

csacademy/Round61/C.cpp

@@ -0,0 +1,51 @@
+#include<bits/stdc++.h>
+using namespace std;
+
+#define endl '\n'
+#define D(x) cout << #x << " = " << (x) << endl;
+
+int main() {
+#ifdef ONLINEJUDGE
+  ios_base::sync_with_stdio(0); cin.tie(0);
+#endif
+
+  int n, m;
+  cin >> n >> m;
+
+  int a, b;
+  vector<int> times(n + 1, 0);
+  vector<int> l(m), r(m);
+  for (int i = 0; i < m; ++i) {
+    cin >> a >> b;
+    l[i] = a;
+    r[i] = b;
+    a --;
+    times[a] ++;
+    times[b] --;
+  }
+
+  int zeros = 0;
+  set<int> uniq;
+  int acum = 0;
+  for (int i = 0; i < n; ++i) {
+    acum += times[i];
+    if (acum == 1) uniq.insert(i + 1);
+    if (acum == 0) zeros ++;
+  }
+
+  vector<int> ans(m, 0);
+  for (int i = 0; i < m && uniq.size() > 0; ++i) {
+    while (uniq.size() > 0) {
+      auto lw = uniq.lower_bound(l[i]);
+      if (lw != uniq.end() && *lw >= l[i] && *lw <= r[i]) {
+        uniq.erase(lw);
+        ans[i] ++;
+      }
+      else break;
+    }
+  }
+
+  for (int i = 0; i < m; ++i) cout << ans[i] + zeros << " ";cout << endl;
+
+  return 0;
+}