Submission #1185203

#	Time	Username	Problem	Language	Result	Execution time	Memory
1185203		Mighilon	September (APIO24_september)	C++20	100 / 100	76 ms	8076 KiB

september

#include <bits/stdc++.h>
using namespace std;
 
#ifdef DEBUG
#include "../Library/debug.h"
#else
#include "september.h"
#define dbg(x...)
#endif

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pi;
typedef pair<ll, ll> pl;
typedef vector<int> vi;
typedef vector<bool> vb;
typedef vector<ll> vl;
typedef vector<pi> vpi;
typedef vector<pl> vpl; 
 
#define FOR(i, a, b) for (int i = (a); i < (b); ++i)
#define F0R(i, a) for (int i = 0; i < (a); ++i)
#define FORd(i, a, b) for (int i = (b) - 1; i >= (a); --i)
#define F0Rd(i, a) for (int i = (a) - 1; i >= 0; --i)
#define trav(a, x) for (auto& a : x)
#define f first 
#define s second
#define pb push_back
#define sz(x) (int)(x).size()
#define all(x) x.begin(), x.end()
 
const char nl = '\n';
const int INF = 1e9;
const ll MOD = 998244353;
const int mxN = 3e5+5;

int solve(int n,int m,vi p,vector<vi> s){
    vector<vi> cnt(m,vi(n-1));
    F0R(i,m){
        vi vis(n),id(n);
        F0R(j,n-1){
            id[s[i][j]]=j;
        }
        int mn=n-1;
        int c=0;
        F0Rd(j,n-1){
            // dbg(j,s[i][j],p[s[i][j]],vis[p[s[i][j]]])
            if(p[s[i][j]]==0||vis[p[s[i][j]]]){
            }
            else{
                mn=min(mn,id[p[s[i][j]]]);
                vis[s[i][j]]=1;
            }
            cnt[i][j]=c;
            if(j<=mn){
                c++;
                mn=j;
            }
        }
    }
    // dbg(cnt)
    int ans=1;
    vi c(n);
    int _c=0;
    F0R(i,n-2){
        bool x=true;
        F0R(j,m){
            c[s[j][i]]++;
            if(c[s[j][i]]==m)
                _c++;
            if(cnt[j][i]==cnt[j][i+1])
                x=false;
        }
        if(x&&_c==(i+1))ans++;
    }
    return ans;
}
#ifdef DEBUG
int32_t main(){
    ios::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
    // cout<<solve(3,1,{-1,0,0},{{1,2}})<<nl;
    // cout<<solve(5,2,{-1,0,0,1,1},{{1,2,3,4},{4,1,2,3}})<<nl;
    int n,m;
    cin>>n>>m;
    vi p(n);
    F0R(i,n)cin>>p[i];
    vector<vi> a(m,vi(n-1));
    F0R(i,m)F0R(j,n-1)cin>>a[i][j];
    cout<<solve(n,m,p,a)<<endl;
}
#endif

• Subtask 1: 11 / 11
• Subtask 2: 14 / 14
• Subtask 3: 5 / 5
• Subtask 4: 9 / 9
• Subtask 5: 5 / 5
• Subtask 6: 11 / 11
• Subtask 7: 9 / 9
• Subtask 8: 11 / 11
• Subtask 9: 9 / 9
• Subtask 10: 16 / 16