cpp
复制代码
#include <iostream>
using namespace std;
#define int long long
int power(int a, int b, int p)
{
int ans = 1;
while (b)
{
if (b % 2)
{
ans *= a;
ans %= p; // 随时取模
}
a *= a;
a %= p; // 随时取模
b /= 2;
}
return ans;
}
signed main()
{
int a, b, p;
cin >> a >> b >> p;
int res = power(a, b, p);
res %= p;
cout << a << "^" << b << " mod " << p << "=" << res;
return 0;
}
cpp
复制代码
#include <iostream>
#include <string>
using namespace std;
int res;
string s[1000];
string a, b;
int x, y;
int main()
{
cin >> a >> b;
x = (a[0] - 'a') - (b[0] - 'a');
y = (a[1] - '0') - (b[1] - '0');
while (x > 0 && y > 0)
{
s[res] = "LD";
res++;
x--;
y--;
}
while (x < 0 && y < 0)
{
s[res] = "RU";
res++;
x++;
y++;
}
while (x > 0 && y < 0)
{
s[res] = "LU";
res++;
x--;
y++;
}
while (x < 0 && y > 0)
{
s[res] = "RD";
res++;
x++;
y--;
}
while (x > 0)
{
s[res] = "L";
res++;
x--;
}
while (x < 0)
{
s[res] = "R";
res++;
x++;
}
while (y > 0)
{
s[res] = "D";
res++;
y--;
}
while (y < 0)
{
s[res] = "U";
res++;
y++;
}
cout << res << endl;
for (int i = 0; i < res; i++)
{
cout << s[i] << endl;
}
return 0;
}
cpp
复制代码
#include <iostream>
#include <vector>
using namespace std;
void solve()
{
int n;
cin >> n;
vector<int> a(n + 1);
bool flag = false;
for (int i = 1; i <= n; i++)
{
cin >> a[i];
if (a[i] == 0)
{
flag = true;
}
}
if (!flag)
{
cout << "YES" << endl;
return;
}
for (int i = 1; i < n; i++)
{
if (a[i] == a[i + 1] && a[i] == 0)
{
cout << "YES" << endl;
return;
}
}
cout << "NO" << endl;
return;
}
int main()
{
int t;
cin >> t;
while (t--)
{
solve();
}
return 0;
}
