Submission #1164205

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1164205	2025-03-09 08:46:49	cjtsai	Flooding Wall (BOI24_wall)	C++20	12 / 100	43 ms	15944 KiB

Main

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#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pii pair<int,int>
#define pb push_back
#define all(x) x.begin(),x.end()
#define ff first
#define ss second
const int mod=1e9+7;
signed main(){
  ios_base::sync_with_stdio(false);cin.tie(0);
  int n;cin>>n;
  vector<int> a(n), b(n);
  for(int i=0; i<n; i++) cin>>a[i];
  for(int i=0; i<n; i++) cin>>b[i];
  vector<int> pre(n+10, 1);
  for(int i=1; i<n+5; i++) pre[i]=pre[i-1]*2%mod;
  int twos=0;
  vector<int> tp(n);
  for(int i=0; i<n; i++){
    tp[i]=twos;
    if(a[i]==2) twos++;
    if(b[i]==2) twos++;
  }
  int ans=0;
  twos=0;
  for(int i=n-1; i>=0; i--){
    if(a[i]==1&&b[i]==1){
 
 
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• Subtask 1: 0 / 8
• Subtask 2: 0 / 17
• Subtask 3: 0 / 19
• Subtask 4: 0 / 14
• Subtask 5: 12 / 12
• Subtask 6: 0 / 30