Submission #555217

#	Time	Username	Problem	Language	Result	Execution time	Memory
555217		Koosha_mv	Misspelling (JOI22_misspelling)	C++14	100 / 100	1421 ms	167532 KiB

misspelling

#include <bits/stdc++.h>
using namespace std;
#define dbgv(v) cout<<#v<<" = "; f(i,0,v.size()) cout<<v[i]<<" "; cout<<endl
#define dbga(a,x,y) cout<<#a<<" = "; f(i,x,y) cout<<a[i]<<" "; cout<<endl
#define erorp(x) cout<<#x<<"={"<<x.F<<" , "<<x.S<<"}"<<endl
#define eror(x) cout<<#x<<'='<<(x)<<endl
#define f_(i,a,b) for(int i=a;i>=b;i--)
#define f(i,a,b) for(int i=a;i<b;i++)
#define nb(x) __builtin_popcount(x)
#define all(v) v.begin(),v.end()
#define bit(n,k) (((n)>>(k))&1)
#define Add(x,y) x=(x+y)%mod
#define maxm(a,b) a=max(a,b)
#define minm(a,b) a=min(a,b)
#define lst(x) x[x.size()-1]
#define sz(x) int(x.size())
#define mp make_pair
#define ll long long
#define pb push_back
#define S second
#define F first

const int N=1e6+99,mod=1e9+7,S=26;

int n,m,ps[N][S],dp[N][S],pd[N][S],res[N][S],seg[2][N];

void change(int l,int r,int x,int s){
	l--,r--;
	for(l+=n,r+=n;l<r;l>>=1,r>>=1){
		if(l&1) maxm(seg[s][l],x),l++;
		if(r&1) r--,maxm(seg[s][r],x);
	}
}
int get(int x,int s){
	int res=0;
	for(x+=n-1;x>0;x>>=1)
		maxm(res,seg[s][x]);
	return res;
}
int32_t main(){
	ios:: sync_with_stdio(0), cin.tie(0), cout.tie(0);
	f(i,0,2) fill(seg[i],seg[i]+N,0);
	cin>>n>>m;
	f(i,0,m){
		int u,v;
		cin>>u>>v;
		//swap(u,v);
		if(u<v){
			change(u,v,u,0);
		}
		else{
			change(v,u,v,1);
		}
	}
	f(i,0,S) ps[0][i]=1;
	f(i,1,n+1){
		int s=get(i,0),t=get(i,1),res=0;
		//cout<<s<<" - "<<t<<endl;
		//cout<<"PD "<<endl;
		f(j,0,S){
			pd[i][j]=ps[i-1][j];
			if(s!=0) Add(pd[i][j],mod-ps[s-1][j]);
			//cout<<i<<" "<<j<<" -> "<<pd[i][j]<<endl;
		}
		//cout<<"DP "<<endl;
		f(j,0,S){
			dp[i][j]=ps[i-1][j];
			if(t!=0) Add(dp[i][j],mod-ps[t-1][j]);
			//cout<<i<<" "<<j<<" -> "<<dp[i][j]<<endl;
		}
		//cout<<"PS "<<endl;
		f(j,0,S){
			ps[i][j]=ps[i-1][j];
			f(k,0,j) Add(ps[i][j],dp[i][k]);
			f(k,j+1,S) Add(ps[i][j],pd[i][k]);
			//cout<<i<<" "<<j<<" -> "<<ps[i][j]<<endl;
		}
	}
	int ans=0;
	f(i,0,S) Add(ans,dp[n][i]);
	cout<<ans;
}

Compilation message (stderr)

misspelling.cpp: In function 'int32_t main()':
misspelling.cpp:57:29: warning: unused variable 'res' [-Wunused-variable]
   57 |   int s=get(i,0),t=get(i,1),res=0;
      |                             ^~~

• Subtask 1: 8 / 8
• Subtask 2: 20 / 20
• Subtask 3: 29 / 29
• Subtask 4: 32 / 32
• Subtask 5: 11 / 11