diff --git a/roadmap_atcoder/abc204_b.cpp b/roadmap_atcoder/abc204_b.cpp
new file mode 100644
index 0000000..f9d01b6
--- /dev/null
+++ b/roadmap_atcoder/abc204_b.cpp
@@ -0,0 +1,17 @@
+#include <bits/stdc++.h>
+
+int main(void) {
+
+    int n, aux, sum = 0;
+
+    std::cin >> n;
+
+    for(int i = 0; i < n; ++i) {
+        std::cin >> aux;
+        if (aux > 10)
+            sum += aux-10;
+    }
+
+    std::cout << sum << std::endl;
+
+}
\ No newline at end of file
diff --git a/roadmap_atcoder/abc205_b.cpp b/roadmap_atcoder/abc205_b.cpp
new file mode 100644
index 0000000..7d12d83
--- /dev/null
+++ b/roadmap_atcoder/abc205_b.cpp
@@ -0,0 +1,38 @@
+#include <bits/stdc++.h>
+
+
+bool compare(std::vector<int> v, int n) {
+
+    std::vector<int> s;
+    for(int i = 1; i <= n; ++i)
+        s.emplace_back(i);
+
+    for(int i = 0; i < n; ++i)
+        if(s[i] != v[i])
+            return false;
+
+    return true;
+
+}
+
+
+
+int main() {
+
+    int n, aux;
+    std::cin >> n;
+
+    std::vector<int> v;
+    for(int i = 0; i < n; ++i) {
+        std::cin >> aux;
+        v.emplace_back(aux);
+    }
+
+    std::sort(v.begin(),v.end());
+
+    if (compare(v,n))
+        std::cout << "Yes" << std::endl;
+    else
+        std::cout << "No" << std::endl;
+
+}
\ No newline at end of file
diff --git a/roadmap_atcoder/abc206_c.cpp b/roadmap_atcoder/abc206_c.cpp
new file mode 100644
index 0000000..72bb1a0
--- /dev/null
+++ b/roadmap_atcoder/abc206_c.cpp
@@ -0,0 +1,23 @@
+#include <bits/stdc++.h>
+#define ll long long
+
+int main(void){
+
+    ll n, ans = 0;
+    std::cin >> n;
+
+    ll a[n];
+    // Don't need use a sort algorithm because of map
+    std::map<ll, ll> m;
+    for(int i = 0; i < n; ++i) {
+        std::cin >> a[i];
+        m[a[i]]++;
+    }
+
+    for(int i = 0; i < n; ++i)
+        ans+=n-i-1-(--m[a[i]]);
+
+    std::cout << ans << std::endl;
+    
+
+}
\ No newline at end of file
diff --git a/roadmap_atcoder/abc220_a.cpp b/roadmap_atcoder/abc220_a.cpp
new file mode 100644
index 0000000..2833dac
--- /dev/null
+++ b/roadmap_atcoder/abc220_a.cpp
@@ -0,0 +1,27 @@
+#include <bits/stdc++.h>
+
+
+int find_multiple (int a, int b, int c) {
+
+    int cons = 1;
+
+    while(c <= b) {
+        c = cons*c;
+        if (c >= a && c <= b)
+            return c;
+        else
+            cons++;
+    }
+              
+    return -1;
+
+}
+
+int main(void){
+
+    int a,b,c;
+    std::cin >> a >> b >> c;
+
+    std::cout << find_multiple(a,b,c) << std::endl;
+
+}
\ No newline at end of file
diff --git a/roadmap_atcoder/abc220_c.cpp b/roadmap_atcoder/abc220_c.cpp
new file mode 100644
index 0000000..f070a98
--- /dev/null
+++ b/roadmap_atcoder/abc220_c.cpp
@@ -0,0 +1,28 @@
+#include <bits/stdc++.h>
+
+typedef long long ll;
+
+int main() {
+
+    ll n, k, sum = 0, aux;
+    std::cin >> n;
+
+    std::vector<ll> v;
+    for(ll i = 0; i < n; ++i) {
+        std::cin >> aux;
+        v.emplace_back(aux);
+    }
+        
+    std::cin >> k;
+
+    for(ll i = 0; i < k; ++i) {
+        sum += v[i%n];
+        if(sum > k) {
+            aux = i;
+            break;
+        }
+    } 
+
+    std::cout << aux+1 << std::endl;
+
+}
\ No newline at end of file
diff --git a/roadmap_atcoder/abc240_a.cpp b/roadmap_atcoder/abc240_a.cpp
new file mode 100644
index 0000000..e66c783
--- /dev/null
+++ b/roadmap_atcoder/abc240_a.cpp
@@ -0,0 +1,14 @@
+#include <bits/stdc++.h>
+
+int main(void) {
+
+    int a,b;
+    std::cin >> a >> b;
+
+    if (abs(a-b) != 1 && abs(a-b) != 9)
+        std::cout << "No" << std::endl;
+    else
+        std::cout << "Yes" << std::endl;
+
+
+}
\ No newline at end of file