Submission #70486250

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,n) for (int i=(a);i<(n);i++)
#define per(i,a,n) for (int i=(n)-1;i>=(a);i--)
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define fi first
#define se second
#define SZ(x) ((int)(x).size())
typedef vector<int> VI;
typedef basic_string<int> BI;
typedef long long ll;
typedef pair<int,int> PII;
typedef double db;
mt19937 mrand(random_device{}()); 
const ll mod=1000000007;
int rnd(int x) { return mrand() % x;}
ll powmod(ll a,ll b) {ll res=1;a%=mod; assert(b>=0); for(;b;b>>=1){if(b&1)res=res*a%mod;a=a*a%mod;}return res;}
ll gcd(ll a,ll b) { return b?gcd(b,a%b):a;}
// head

const int N=201000;
int n,m,p[N],dp[N],l[N],r[N],mx[N],pm[N];
PII E[N];

void solve() {
	scanf("%d%d",&n,&m);
	rep(i,0,m) {
		int x,y;
		scanf("%d%d",&x,&y);
		E[i]=mp(x,y);
	}
	rep(i,1,n+1) scanf("%d",&p[i]);
	rep(i,0,n+2) l[i]=n+1,r[i]=0;
	l[0]=1; r[n+1]=n;
	rep(i,0,m) {
		auto [x,y]=E[i];
		x=p[x]; y=p[y];
		l[x]=min(l[x],y);
		r[y]=max(r[y],x);
	}
	rep(i,0,n+2) dp[i]=0,mx[i]=0,pm[i]=0;
	dp[0]=1;
	mx[1]=1;
	pm[0]=1;
	int mv=0;
	rep(i,1,n+2) {
		mv=max(mv,mx[i]);
		dp[i]=max(mv,pm[r[i]])+1;
		mx[l[i]]=max(mx[l[i]],dp[i]);
		pm[i]=max(pm[i-1],dp[i]);
	}
	printf("%d\n",(n+2)-dp[n+1]);
}
int _;
int main() {
	for (scanf("%d",&_);_;_--) {
		solve();
	}
	/*auto [num,mask]=build(10,10);
	for (auto x:num) printf("%d ",x);
	puts("");
	for (auto x:mask) {
		printf("%d %d\n",x,lis(num,x));
	}*/
}

Submission Info

Compile Error

Main.cpp: In function ‘void solve()’:
Main.cpp:29:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   29 |         scanf("%d%d",&n,&m);
      |         ~~~~~^~~~~~~~~~~~~~
Main.cpp:32:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   32 |                 scanf("%d%d",&x,&y);
      |                 ~~~~~^~~~~~~~~~~~~~
Main.cpp:35:27: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   35 |         rep(i,1,n+1) scanf("%d",&p[i]);
      |                      ~~~~~^~~~~~~~~~~~
Main.cpp: In function ‘int main()’:
Main.cpp:59:19: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   59 |         for (scanf("%d",&_);_;_--) {
      |              ~~~~~^~~~~~~~~

Judge Result