P2031凯撒密码
#include<bits/stdc++.h>
using namespace std;
int main(){
string s;
int d;
while(cin>>s)
{
cin>>d;
int len=s.length();
for(int i=0;i<len;i++)
{
s[...
逆向考虑即可解决
#include<iostream>
using namespace std;
const int maxn= 100000 +5;
int a[maxn][4];//0-x,1-y,2-x-length,3-y-length
int main(){
int n,flag=0;
cin>>n;
for(int i=1;i...
P200汉诺塔
#include<bits/stdc++.h>
using namespace std;
int main()
{
int n,i;
long long s[40];
s[1]=2;
for(i=2;i<=35;i++)
s[i]=3*s[i-1]+2;
while(cin>>n)
...