command

2-3-b.spp

@@ -0,0 +1,16 @@
+#include <iostream>
+
+int main()
+{
+    int x, y, z; 
+    std::cin >> x >> y >> z;
+    if(x + y <= z || x + z <= y || z +  y  <= x){
+        std::cout << "UNDEFINED ";
+        return 0;
+    }
+    if (y * y + z * z == x * x || x * x + z * z == y * y || y * y + x * x == z * z){
+        std::cout << "YES ";
+        return 0;
+    }
+        std::cout << "NO ";
+}

2-3-c.spp

@@ -0,0 +1,21 @@
+
+#include <iostream>
+int main()
+{
+  int a;
+  std::cin >> a;
+  if(a % 400 == 0  ){
+     std::cout << "YES";
+     return  0 ;
+  }
+  else if(a % 100  ==  0  )  {
+      std::cout << "NO";
+      return  0 ;
+  }
+  else if(a % 4 == 0)  {
+      std::cout << "YES";
+      return  0 ;
+  }
+      std::cout << "NO";
+    
+}

2-3-e.spp

@@ -0,0 +1,31 @@
+#include <iostream>
+#include <string>
+int main()
+{
+    int a, b;
+    std::cin  >> a >> b;
+    int e = a;
+    std::cout.width(a);
+     for(int k = 1; k < a; k++) {
+            std::cout <<"  ";
+            if (a >= 3 && k == 1){
+                std::cout <<" ";
+            }
+            else if(a < 3){
+                std::cout <<" ";
+            }
+            
+         }
+     for(int i = 1; i <= b; i++) {
+        std::cout.width(3);
+        std::cout << i;
+         if (e == 7){
+             std::cout << "\n";
+             e = 1;
+         }
+         else{
+             e++;
+         }
+     }
+    
+}

2-3-f.spp

@@ -0,0 +1,12 @@
+#include <iostream>
+
+int main() {
+    int a,b = 0;
+    std::cin >> a;
+    for(;a != 0;) {
+        b += a % 10;
+        a /= 10;
+    }
+
+    std::cout << b << "\n";
+}

2-3-g.spp

@@ -0,0 +1,12 @@
+#include <iostream>
+int main() {
+    int a;
+    std::cin >> a;
+    double b = 1;
+    double c = 0.0;
+    for (int i = 1; i <= a; ++i) {
+        c += b / i;
+        b = -b;
+    }
+    std::cout << c << "\n";
+}

2-4-a.spp

@@ -0,0 +1,39 @@
+#include <iostream>
+#include <string>
+
+bool IsGood(const std::string& pas) {
+    if (pas.size() < 8 || pas.size() >14) {
+        return false;
+    }
+    int a = 0;
+    int b = 0;
+    int x = 0;
+    int d = 0;
+
+    for (char c : pas) {
+        if (c < 33 || c > 126) {
+            return false;
+        }
+        if ('A' <= c && c <= 'Z') {
+            a = 1;
+        } else if ('a' <= c && c <= 'z') {
+            b = 1;
+        } else if ('0' <= c && c <= '9') {
+            x = 1;
+        } else {
+            d = 1;
+        }
+    }
+
+    return (a + b + x + d >= 3);
+}
+
+int main() {
+    std::string pas;
+    std::getline(std::cin, pas);
+    if (IsGood(pas)) {
+        std::cout << "YES\n";
+    } else {
+        std::cout << "NO\n";
+    }
+}

2-4-b.spp

@@ -0,0 +1,69 @@
+#include <iostream>
+#include <string>
+
+int main()
+{
+std::string clovo;
+std::string a;
+std::cin >> clovo;
+a.push_back(clovo[0]);
+for (size_t i = 1; i != clovo.size(); ++i) {
+    char c = clovo[i];
+    switch (c) {
+        case 'b':
+        case 'f':
+        case 'p':
+        case 'v':
+            c = '1';
+            if (a.back() != c) {
+                a.push_back(c);
+            }
+            break;
+        case 'c':
+        case 'g':
+        case 'j':
+        case 'k':
+        case 'q':
+        case 's':
+        case 'x':
+        case 'z':
+            c = '2';
+            if (a.back() != c) {
+                a.push_back(c);
+            }
+            break;
+        case 'd':
+        case 't':
+            c = '3';
+            if (a.back() != c) {
+                a.push_back(c);
+            }
+            break;
+        case 'l':
+            c = '4';
+            if (a.back() != c) {
+                a.push_back(c);
+            }
+            break;
+        case 'm':
+        case 'n':
+            c = '5';
+            if (a.back() != c) {
+                a.push_back(c);
+            }
+            break;
+        case 'r':
+            c = '6';
+            if (a.back() != c) {
+                a.push_back(c);
+            }
+            break;
+        }
+    }
+    while (a.size() < 4) {
+        a.push_back('0');
+    }
+    a.resize(4);
+    std::cout << a;
+
+}

2-4-c.spp

@@ -0,0 +1,24 @@
+#include <iostream>
+#include <vector>
+
+int main()
+{
+    std::vector<int> data;
+    std::vector<int> dataT;
+    int a;
+    std::cin>> a;
+    for(int i = 0;i < a;i++){
+        int b;
+        std::cin >> b;
+        data.push_back(b);
+        dataT.push_back(i);
+    }
+    for(int j = 0;j < a;j++){
+        dataT[data[j] - 1] = j + 1;
+    }
+    for(int k = 0 ;k< a;k++){
+         std::cout << dataT[k]<<' ';
+    }
+
+    
+}

2-4-d.spp

@@ -0,0 +1,19 @@
+#include <algorithm>
+#include <iostream>
+#include <string>
+#include <vector>
+
+int main() {
+    std::vector<std::string> a;
+
+    std::string b;
+    while (std::getline(std::cin, b)) {
+        a.push_back(b);
+    }
+
+    std::sort(a.rbegin(), a.rend());
+
+    for (size_t i = 0; i != a.size(); ++i) {
+        std::cout << a[i] << "\n";
+    }
+}

2-4-e.spp

@@ -0,0 +1,32 @@
+#include <iostream>
+#include <string>
+#include <vector>
+
+int main() {
+    std::string clovo;
+    std::getline(std::cin, clovo);
+
+    int a = 0;
+    int b = clovo.size() - 1;
+    bool yesOrNo = true;
+
+     while (a < b) {
+        if (clovo[a] == ' ') {
+            ++a;
+        } else if (clovo[b] == ' ') {
+            --b;
+        } else if (clovo[a] != clovo[b]) {
+            yesOrNo = false;
+            break;
+        } else {
+            ++a;
+            --b;
+        }
+    }
+
+    if (yesOrNo) {
+        std::cout << "YES\n";
+    } else {
+        std::cout << "NO\n";
+    }
+}

2-7-a.spp

@@ -0,0 +1,32 @@
+#include <iostream>
+#include <string>
+#include <vector>
+
+int main() {
+    std::string clovo;
+    std::getline(std::cin, clovo);
+
+    int a = 0;
+    int b = clovo.size() - 1;
+    bool yesOrNo = true;
+
+     while (a < b) {
+        if (clovo[a] == ' ') {
+            ++a;
+        } else if (clovo[b] == ' ') {
+            --b;
+        } else if (clovo[a] != clovo[b]) {
+            yesOrNo = false;
+            break;
+        } else {
+            ++a;
+            --b;
+        }
+    }
+
+    if (yesOrNo) {
+        std::cout << "YES\n";
+    } else {
+        std::cout << "NO\n";
+    }
+}