求助各位奆，为什么这份代码它厌氧

rt，不吸氧能A吸了氧全RE...

#include <bits/stdc++.h>
#define in inline
#define rint register int
#define r(a) runtimerror(a)
#define w(a) wronganswer(a)
#define wl(a) wronganswer(a);putchar('\n')
#define ws(a) wronganswer(a);putchar(' ')
using namespace std;
typedef long long ll;
bool vis[100010];
int head1[100010],ans,answ,f[100010],g[100010],n,m,x,a,b,tot,sz[100010],head[100010],tmp,low[100010],dfn[100010],scc[100010],scnt;
stack <int> s;
map <ll,bool> vs;
void wronganswer(int a){
    if(a<0) putchar('-'),a=-a;
    if(a>9) wronganswer(a/10);
    putchar(a%10^48);
}
template <typename t> in t runtimerror(t &a){
    char ch=getchar();
    t x=1,f=0;
    while(!isdigit(ch)){
        if(ch=='-') x=-1;
        ch=getchar();
    }
    while(isdigit(ch)){
        f=(f<<3)+(f<<1)+(ch^48);
        ch=getchar();
    }
    a=x*f;
}
struct Edge{
    int to,nex,cost;
}edge[2000010];
in void add_edge(int from,int to,int cost,int *head){
    edge[++tot]=(Edge){to,head[from],cost};
    head[from]=tot;
}
void tarjan(int id){
    vis[id]=true,low[id]=dfn[id]=++tmp;
    s.push(id);
    for(rint i=head1[id];i;i=edge[i].nex){
        if(!dfn[edge[i].to]){
            tarjan(edge[i].to);
            low[id]=min(low[id],low[edge[i].to]);
        }else if(vis[edge[i].to]){
            low[id]=min(low[id],dfn[edge[i].to]);
        }
    }
    if(low[id]==dfn[id]){
        scnt++;
        int x;
        do{
            x=s.top(),scc[x]=scnt,vis[x]=false,sz[scnt]++;
            s.pop();
        }while(x!=id);
    }
}
int main(){
    r(n),r(m),r(x);
    for(rint i=1;i<=m;i++){
        r(a),r(b);
        add_edge(a,b,0,head1);
    }
    for(rint i=1;i<=n;i++){
        if(!dfn[i]) tarjan(i);
    }
    for(rint i=1;i<=n;i++){
        for(rint j=head1[i];j;j=edge[j].nex){
            if(scc[i]!=scc[edge[j].to]&&!vs[(ll)(scc[i]*1000000ll+scc[edge[j].to])]){
                add_edge(scc[i],scc[edge[j].to],0,head);
                vs[(ll)(scc[i]*1000000ll+scc[edge[j].to])]=true;
            }
        }
    }
    for(rint i=scnt;i;i--){
        if(!f[i]) f[i]=sz[i],g[i]=1;
        for(rint j=head[i];j;j=edge[j].nex){
            if(f[edge[j].to]<f[i]+sz[edge[j].to]){
                f[edge[j].to]=f[i]+sz[edge[j].to];
                g[edge[j].to]=g[i];
            }else if(f[edge[j].to]==f[i]+sz[edge[j].to]){
                g[edge[j].to]=(g[edge[j].to]+g[i])%x;
            }
        }
    }
    for(rint i=1;i<=scnt;i++){
        if(answ<f[i]){
            answ=f[i],ans=g[i];
        }else if(answ==f[i]){
            ans=(ans+g[i])%x;
        }
    }
    wl(answ);
    w(ans);
    return 0;
}