日志7

反转数

#include <iostream>

using namespace std;

int main()

{

long long a,b=0;

cin >> a;

while (a > 0) {

b = b * 10 + a % 10;

a = a / 10;

}

cout << b << endl;

return 0;

}

青蛙爬井

#include <iostream>

using namespace std;

int main()

{

int a, b, c, d;

cin >> a >> b >> c;//高，爬，掉

if (b >= a) {

cout << "1" << endl;

}

else {

d = (a - b) / (b - c);

if ((a - b) % (b - c) > 0) {

d++;

}

d += 1;

cout << d << endl;

}

return 0;

}