xdm，打卡第一天。

学习a+b。题目链接 https://www.acwing.com/problem/content/1/

#include bits/stdc++.h>

using namespace std;
const int N=405;
struct Edge {
int v,w;
};
vector[HTML_REMOVED] edge[NN];
int n;
int dis[NN];
bool vis[N*N];
struct cmp {
bool operator()(int a,int b) {
return dis[a]>dis[b];
}
};
int Dijkstra(int start,int end)
{
priority_queue[HTML_REMOVED],cmp> dijQue;
memset(dis,-1,sizeof(dis));
memset(vis,0,sizeof(vis));
dijQue.push(start);
dis[start]=0;
while(!dijQue.empty()) {
int u=dijQue.top();
dijQue.pop();
vis[u]=0;
if(u==end)
break;
for(int i=0; i[HTML_REMOVED]dis[u]+edge[u][i].w) {
dis[v]=dis[u]+edge[u][i].w;
if(!vis[v]) {
vis[v]=true;
dijQue.push(v);
}
}
}
}
return dis[end];
}
int main()
{
int a,b;
scanf(“%d%d”,&a,&b);
Edge Qpush;

Qpush.v=1;
Qpush.w=a;
edge[0].push_back(Qpush);

Qpush.v=2;
Qpush.w=b;
edge[1].push_back(Qpush);

printf("%d",Dijkstra(0,2));
return 0;
}