#include <iostream> using namespace std; void func(int a, int b, int c) { int min = a < b ? a : b; min = min < c ? min : c; int max = a > b ? a : b; max = max > c ? max : c; int mid = a + b + c - min - max; if (min * min + mid * mid == max * max) { cout << "直角三角形" << endl; } if (min * min + mid * mid < max * max) { cout << "钝角三角形" << endl; } if (min * min + mid * mid > max * max) { cout << "锐角三角形" << endl; } } int main() { int a, b, c; while (cin >> a >> b >> c) { func(a, b, c); } return 0; } // 64 位输出请用 printf("%lld")