init commit

contests/3contest/4.cpp

@@ -0,0 +1,33 @@
+#include <cmc_complex.h>
+#include <cmc_complex_stack.h>
+#include <cmc_complex_eval.h>
+#include <cmath>
+#include <iostream>
+#include <vector>
+#include <string>
+
+using namespace numbers;
+
+
+int main(int argc, char** argv) {
+    complex C(argv[1]);
+    double R = std::stod(argv[2]);
+    int N = std::stoi(argv[3]);
+    std::vector<std::string> record;
+    for (int i = 4; i < argc; i++) {
+        record.push_back(argv[i]);
+    }
+
+    complex I, z, next = C + R;
+    double h = 2 * M_PI;
+    double s = h / N;
+    for (double i = 0; i < h; i += s) {
+        z = next;
+        next = C + R * complex(std::cos(i), std::sin(i));
+        I += eval(record, (z + next) / 2) * (next - z);
+    }
+
+    std::cout << I.to_string() << std::endl;
+
+    return 0;
+}