diff --git a/10/1.cpp b/10/1.cpp
new file mode 100644
index 0000000..4b7a967
--- /dev/null
+++ b/10/1.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <cstdio>
+#include <vector>
+#include <map>
+
+int main()
+{
+    int a;
+    std::vector<int> inputs;
+    while(int r = scanf("%d", &a) > 0)
+    {
+        inputs.push_back(a);
+    }
+
+    std::cout << "out\n";
+
+    std::sort(inputs.begin(), inputs.end());
+
+    int cur_jolt = 0;
+    std::map<int, int> m;
+    for(auto jolt: inputs)
+    {
+        m[jolt - cur_jolt]++;
+        cur_jolt = jolt;
+    }
+
+    std::cout << m[1] * (m[3] + 1);
+
+    return 0;
+}
diff --git a/10/2.cpp b/10/2.cpp
new file mode 100644
index 0000000..0e5a32a
--- /dev/null
+++ b/10/2.cpp
@@ -0,0 +1,45 @@
+#include <iostream>
+#include <cstdio>
+#include <vector>
+#include <map>
+
+std::map<std::vector<int>::iterator, long long> m;
+
+long long count(std::vector<int>::iterator b, std::vector<int>::iterator e)
+{
+    if(b+1 == e) return 1;
+    if(m.find(b) != m.end()) return m[b];
+
+    long long val;
+    if(b+3 < e && *(b+3) - *b <= 3)
+    {
+        val = count(b+3, e) + count(b+2, e) + count(b+1, e);
+    }
+    else if(b+2 < e && *(b+2) - *b <= 3)
+    {
+        val = count(b+2, e) + count(b+1, e);
+    }
+    else
+    {
+        val = count(b+1, e);
+    }
+    m[b] = val;
+    return val;
+}
+
+int main()
+{
+    int a;
+    std::vector<int> inputs;
+    while(int r = scanf("%d", &a) > 0)
+    {
+        inputs.push_back(a);
+    }
+    inputs.push_back(0);
+
+    std::sort(inputs.begin(), inputs.end());
+
+    printf("%lld", count(inputs.begin(), inputs.end()));
+
+    return 0;
+}
diff --git a/10/input.txt b/10/input.txt
new file mode 100644
index 0000000..f0d836b
--- /dev/null
+++ b/10/input.txt
@@ -0,0 +1,104 @@
+49
+89
+70
+56
+34
+14
+102
+148
+143
+71
+15
+107
+127
+165
+135
+26
+119
+46
+53
+69
+134
+1
+40
+81
+140
+160
+33
+117
+82
+55
+25
+11
+128
+159
+61
+105
+112
+99
+93
+151
+20
+108
+168
+2
+109
+75
+139
+170
+65
+114
+21
+92
+106
+162
+124
+158
+38
+136
+95
+161
+146
+129
+154
+121
+86
+118
+88
+50
+48
+62
+155
+28
+120
+78
+60
+147
+87
+27
+7
+54
+39
+113
+5
+74
+169
+6
+43
+8
+29
+18
+68
+32
+19
+133
+22
+94
+47
+132
+59
+83
+12
+13
+96
+35