#include<bits/stdc++.h>
using namespace std;
int n,m,Q,ans;
int pw[500005],maxx[500005];
int dx[500005],dy[500005];
int answer[500005];
bool vis[505][500005];
const int mod=998244353;
struct G{
	int tot,head[200005];
	struct node{
		int u,v,next;
	}ed[200005];
	void add(int u,int v){
		ed[++tot].v=v;
		ed[tot].next=head[u];
		head[u]=tot;
	}
}liver_Graph[105];
struct edge{
	int u,v,val;
}e[500005];
void dfs(int id,int x){
	vis[id][x]=1;
	if(id>maxx[x]&&x!=1){
		ans=(ans-1ll*pw[x]*maxx[x]%mod+mod)%mod;
		ans=(ans+1ll*pw[x]*id%mod+mod)%mod;
		maxx[x]=id;
	}
	for(int i=liver_Graph[id].head[x];i;i=liver_Graph.ed[i].next){
		int v=liver_Graph[id].v;
		if(vis[id][v]){
			continue;
		}
		dfs(id,v);
	}
	return ;
}
inline read(){
    int i=0;
    char c=0;
    char ch='\0' ;
    while((ch=getchar())<48||ch>57)if(ch=='-')c=1;
    while(ch>47&&ch<58){
        i=(i<<1)+(i<<3)+(ch&0xCF);
        ch=getchar();
    }
    if(c){
    	i=-i;
	}
    return i;
}
signed main(){
	n=read(),m=read(),Q=read();
	for(int i=1;i<=n;i++){
		pw[i]=2ll*pw[i-1]%mod;
	}
	for(int i=1;i<=m;i++){
		e[i].u=read();
		e[i].v=read();
		e[i].val=read();
	}
	for(int i=1;i<=Q;i++){
		dx[i]=read();
		dy[i]=read();
		e[dx[i]].val-=dy[i];
	}
	for(int i=1;i<=m;i++){
		for(int i=1;i<=e[i].val;i++){
			liver_Graph.add(e[i].u,e[i].v);
		}
	}
	for(int i=1;i<=100;i++){
		dfs(i,1);
	}
	for(int i=Q;i>=1;i--){
		answer[i]=ans;
		for(int j=e[dx[i]].val+1;j<=e[dx[i]].val+dy[i];j++){
			liver_Graph.add(e[dx[i]].u,e[dx[i]].v);
			if(vis[j][e[dx[i]].u]){
				dfs(j,e[dx[i]].u);
			}
		}
		e[dx[i]].val+=dy[i];
	}
	for(int i=1;i<=Q;i++){
		printf("%d\n",answer[i]);
	}
	return 0;
}

in function 'void dfs(int, int)':
30	52		
[Error] request for member 'ed' in 'liver_Graph', which is of non-class type 'G [105]'
31	25
[Error] 'struct G' has no member named 'v'
In function 'int main()':
70	16	
[Error] request for member 'add' in 'liver_Graph', which is of non-class type 'G [105]'
79	16	
[Error] request for member 'add' in 'liver_Graph', which is of non-class type 'G [105]'

版本为 c++14

错误信息和代码均给出，恳请大佬指点