#include <iostream> #include <vector> #include <string> #include <cctype> using namespace std; // 快读整数函数，修改返回值类型为long long以处理更大范围整数 inline long long read() { long long x = 0, f = 1; char ch = getchar(); while (!isdigit(ch)) { if (ch == '-') f = -1; ch = getchar(); } while (isdigit(ch)) { x = x * 10 + (ch - '0'); ch = getchar(); } return x * f; } // 快读字符串函数，按空格分割读取字符串（符合题目输入格式要求） inline void readString(string& s) { s.clear(); char ch = getchar(); while (isspace(ch)) { // 跳过开头的空白字符 ch = getchar(); } while (!isspace(ch) && ch != '\n' && ch != EOF) { // 读取直到遇到空白字符或者换行符或者文件结束符 s.push_back(ch); ch = getchar(); } } // 函数参数和内部计数变量都改为long long类型，应对大数据情况 long long aduidui(vector<string>& adad) { long long n = adad.size(); long long count_ha = 0; long long count_ha_ji = 0; long long result = 0; for (long long i = 0; i < n; ++i) { if (adad[i] == "ha") { count_ha++; } else if (adad[i] == "ji") { count_ha_ji += count_ha; } else if (adad[i] == "mi") { result += count_ha_ji; } } return result; } int main() { long long n = read(); if (n < 1 || n > 1000000) { cout << "输入的音节序列长度不符合要求" << endl; return -1; } vector<string> adad(n); for (long long i = 0; i < n; ++i) { readString(adad[i]); } long long result = aduidui(adad); cout << result << endl; return 0; }