题目链接
非常可乐
代码如下
#include<bits/stdc++.h>
using namespace std;
const int M = 105;
int s,n,m;
struct cup
{
int v[5];
int step;
}temp;
int vis[M][M][M],v[5];
void pour(int a,int b)
{
int sum = temp.v[a]+temp.v[b];
if(sum>=v[b]) temp.v[b] = v[b];
else temp.v[b] = sum;
temp.v[a] = sum-temp.v[b];
}
void bfs()
{
int i,j;
queue<cup>q;
cup cnt;cnt.v[1] = v[1];
cnt.v[2] = 0;
cnt.v[3] = 0;
cnt.step = 0;
q.push(cnt);memset(vis,0,sizeof vis);
vis[v[1]][0][0] = 1;
while(!q.empty())
{
cnt = q.front();q.pop();
if(cnt.v[1]==cnt.v[3]&&cnt.v[2]==0)
{
printf("%d\n",cnt.step);
return ;
}
for(i = 1;i<=3;i++)
{
for(j = 1;j<=3;j++)
{
if(i!=j)
{
temp = cnt;pour(i,j);
if(!vis[temp.v[1]][temp.v[2]][temp.v[3]])
{
temp.step++;q.push(temp);
vis[temp.v[1]][temp.v[2]][temp.v[3]] = 1;
}
}
}
}}
printf("NO\n");
}
int main ()
{
while(~scanf("%d%d%d",&v[1],&v[2],&v[3]))
{
if(v[1]==0&&v[2]==0&&v[3]==0)
break;
if(v[2]>v[3])
{
int t = v[2];v[2] = v[3];v[3] = t;
}
bfs();
}
return 0;
}