收录一下Robocom初赛的屌题，调了我一个多小时，是我菜了

题目详情 - 7-3 打怪升级 (pintia.cn)

题意：

 

 

Code：

#include<bits/stdc++.h> 
using namespace std;
 
int n, m, a, b, c, d, q, p;
int f[1005][1005];
 
const int N = 2000000;
int ne[N], w[N], ww[N], e[N], h[N], idx, dist[1005];
bool st[1005];
 
struct node{
	int distance, power, name;
};
 
struct cmp{
	bool operator() (node x, node y){
		if(x.distance != y.distance) return x.distance > y.distance;
		else{
			if(x.power != y.power) return x.power < y.power;
			else return x.name < y.name;
		} 
	}
}; 
 
int pre[1005];//难点1
int pw[1005];//难点2 
 
void add(int a, int b, int c, int d){
	e[idx] = b, w[idx] = c, ww[idx] = d, ne[idx] = h[a], h[a] = idx++;
}
 
void dijk(int s){
	priority_queue<node, vector<node>, cmp> heap;
	heap.push({0, 0, s});
	dist[s] = 0;
	while(heap.size()){
		node head = heap.top();
		heap.pop();
		int ver = head.name, distance = head.distance, power = head.power;
		if(st[ver]) continue;
		st[ver] = 1;
		
		for(int i = h[ver]; i!=-1; i = ne[i]){
			int j = e[i];
			if(distance + w[i] < dist[j]){
				pre[j] = ver;
				dist[j] = distance + w[i];
				pw[j] = power + ww[i];
				heap.push({dist[j], pw[j], j});
			}
			else if(distance + w[i] == dist[j]){
				if(power + ww[i] > pw[j]){
					pre[j] = ver;
					dist[j] = distance + w[i];
					pw[j] = power + ww[i];
					heap.push({dist[j], pw[j], j});
				}
			}
		}
	}
//	cout<<"debug";
}
 
int main(){
	memset(h, -1, sizeof h);
	memset(dist, 127, sizeof dist);
	
	cin>>n>>m;
	memset(f, 63, sizeof f);
	for(int i = 1; i<=m; ++i){
		cin>>a>>b>>c>>d;
		f[a][b] = c;
		f[b][a] = c;
		add(a,b,c,d);
		add(b,a,c,d);
	}
 
	for(int k = 1; k<=n; ++k)
		for(int i = 1; i<=n; ++i)
			for(int j = 1; j<=n; ++j)
				f[i][j] = min(f[i][j], f[i][k] + f[k][j]);
 
	int ans1 = 0;
	int ans1max = 100000000;
	for(int i = 1; i<=n; ++i){
		int curmax = 0;
		for(int j = 1; j<=n; ++j){
			curmax = max(curmax, f[i][j]);
		}
		if(curmax<ans1max){
			ans1 = i;
			ans1max = curmax;
		}
	}
	cout<<ans1<<endl;
 
	dijk(ans1);
	cin>>q;
	for(int i = 1; i<=q; ++i){
		cin>>p;
		vector<int> ans2;
		
		int cur = p;
		while(cur!=ans1){
			ans2.push_back(cur);
			cur = pre[cur];
		}
		ans2.push_back(ans1);
		
		for(int i = ans2.size()-1; i>=0; --i){
			cout<<ans2[i];
			if(i!=0) cout<<"->";
		}
		cout<<"\n";		
		
		cout<<dist[p]<<" "<<pw[p]<<endl;
	}
 
    return 0;
}

 

#include <bits/stdc++.h>

//#define int long long

using namespace std;

const int mxn=2e6+10;
const int mxe=2e6+10;
const int Inf=0x3f3f3f3f;
const int mod=998244353;

struct ty{
	int to,next,w1,w2;
}edge[mxe<<1];

struct ty2{
	//能量，价值
	int x,dist1,dist2;
};

struct cmp{
	bool operator()(ty2 x,ty2 y){
		if(x.dist1!=y.dist1) return x.dist1<y.dist1;
		else{
			if(x.dist2!=y.dist2) return x.dist2<y.dist2;
			else return x.x<y.x;
		}
	}
};

priority_queue<ty2,vector<ty2>,cmp> Q;

int N,M,K,tot=0,u,v,w1,w2,ansmi,x;
int head[mxn];
int dis[1005][1005],vis[mxn];
int dis1[mxn],pw[mxn];
int pre[mxn];

void add(int u,int v,int w1,int w2){
	edge[tot].w1=w1;
	edge[tot].w2=w2;
	edge[tot].to=v;
	edge[tot].next=head[u];
	head[u]=tot++;
}
void G_init(){
	tot=0;
	for(int i=0;i<=N;i++){
		head[i]=-1;
	}
}
void Floyd(){
	for(int k=1;k<=N;k++){
		for(int i=1;i<=N;i++){
			for(int j=1;j<=N;j++){
				if(i==j||i==k||k==j) continue;
				dis[i][j]=min(dis[i][j],dis[i][k]+dis[k][j]);
			}
		}
	}
	int mi=Inf;
	for(int i=1;i<=N;i++){
		int mx=-1;
		for(int j=1;j<=N;j++){
			mx=max(mx,dis[i][j]);
		}
		if(mi>mx){
			mi=mx;
			ansmi=i;
		}
	}
}
void dij(int s){
	//能量，价值
	memset(dis1,0x3f,sizeof(dis1));
	memset(vis,0,sizeof(vis));
	dis1[s]=0;
	Q.push({s,0,0});
	while(!Q.empty()){
		auto u=Q.top();
		Q.pop();
		if(vis[u.x]) continue;
		vis[u.x]=1;
		for(int i=head[u.x];~i;i=edge[i].next){
			if(dis1[edge[i].to]>u.dist1+edge[i].w1){
				dis1[edge[i].to]=u.dist1+edge[i].w1;
				pre[edge[i].to]=u.x;
				pw[edge[i].to]=u.dist2+edge[i].w2;
				Q.push({edge[i].to,dis1[edge[i].to],pw[edge[i].to]});
			}else if(dis1[edge[i].to]==u.dist1+edge[i].w1){
				if(pw[edge[i].to]<u.dist2+edge[i].w2){
					pre[edge[i].to]=u.x;
					dis1[edge[i].to]=u.dist1+edge[i].w1;
					pw[edge[i].to]=u.dist2+edge[i].w2;
					Q.push({edge[i].to,dis1[edge[i].to],pw[edge[i].to]});
				}
			}
		}
	}
}
void solve(){
	cin>>N>>M;
	G_init();
	for(int i=1;i<=N;i++){
		for(int j=1;j<=M;j++){
			if(i==j) dis[i][j]=0;
			else dis[i][j]=Inf;
		}
	}
	for(int i=1;i<=M;i++){
		cin>>u>>v>>w1>>w2;
		dis[u][v]=dis[v][u]=w1;
		add(u,v,w1,w2);
		add(v,u,w1,w2);
	}
	Floyd();
	cout<<ansmi<<'\n';
	dij(ansmi);
	cin>>K;
	for(int i=1;i<=K;i++){
		cin>>x;
		vector<int> ans;
		int cur=x;
		while(cur!=ansmi){
			ans.push_back(cur);
			cur=pre[cur];
		}
		ans.push_back(ansmi);
		for(int i=ans.size()-1;i>=0;i--){
			cout<<ans[i];
			if(i!=0) cout<<"->";
		}
		cout<<'\n';
		cout<<dis1[x]<<" "<<pw[x]<<'\n';
	}
}
signed main(){
    ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    int __=1;//cin>>__;
	while(__--)solve();return 0;
}