Submission #1113974

#	Time	Username	Problem	Language	Result	Execution time	Memory
1113974		ezzzay	Plus Minus (BOI17_plusminus)	C++14	0 / 100	1 ms	2640 KiB

plusminus

#include<bits/stdc++.h>
using namespace std;
#define itn long long
#define int long long
#define ff first
#define ss second
#define pb push_back
const int N=2000;
char a[N][N];
const int mod=1e9+7;
int dp[N][N][6];
signed main(){
    int n,m,k;
    cin>>n>>m>>k;
    for(int i=1;i<=k;i++){
        char c;
        int y,x;
        cin>>c>>y>>x;
        a[y][x]=c;
    }
    for(int j=0;j<=n;j++){
        dp[j][0][0]=1;
        dp[j][0][1]=1;
        dp[j][0][2]=1;
        dp[j][5][5]=1;
    }
    
    for(int j=0;j<=m;j++){
        dp[0][j][0]=1;
        dp[0][j][1]=1;
        dp[0][j][2]=1;
        dp[0][j][5]=1;
    }
    
    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++){
            if(a[i][j]=='+'){
                dp[i][j][2]=(dp[i-1][j][1]+dp[i-1][j][3])*dp[i][j-1][3];
                dp[i][j][4]=(dp[i-1][j][4]+dp[i-1][j][2])*dp[i][j-1][1];
                dp[i][j][5]=dp[i-1][j][0]*dp[i][j-1][2];
            }
            else if(a[i][j]=='-'){
                dp[i][j][0]=dp[i-1][j][5]*dp[i][j-1][3];
                dp[i][j][1]=(dp[i-1][j][1]+dp[i-1][j][3])*dp[i][j-1][4];
                dp[i][j][3]=(dp[i-1][j][4]+dp[i-1][j][2])*dp[i][j-1][2];
            }
            else{
                dp[i][j][2]=(dp[i-1][j][1]+dp[i-1][j][3])*dp[i][j-1][3];
                dp[i][j][4]=(dp[i-1][j][4]+dp[i-1][j][2])*dp[i][j-1][1];
                dp[i][j][5]=dp[i-1][j][0]*dp[i][j-1][2];
                dp[i][j][0]=dp[i-1][j][5]*dp[i][j-1][3];
                dp[i][j][1]=(dp[i-1][j][1]+dp[i-1][j][3])*dp[i][j-1][4];
                dp[i][j][3]=(dp[i-1][j][4]+dp[i-1][j][2])*dp[i][j-1][2];
            }
        }
    }
    int ans=0;
    for(int i=0;i<6;i++){
        ans+=dp[n][m][i];
    }
    cout<<ans; 
}

• Subtask 1: 0 / 12
• Subtask 2: 0 / 42
• Subtask 3: 0 / 46