Submission #893199

#	Time	Username	Problem	Language	Result	Execution time	Memory
893199		Aiperiii	Dango Maker (JOI18_dango_maker)	C++14	0 / 100	1 ms	580 KiB

dango_maker

#include <bits/stdc++.h>
#define int long long
#define all(x) x.begin(),x.end()
#define ff first
#define ss second
#define pb push_back
using namespace std;
char a[3005][3005];
vector <int> ind[6005];
signed main(){
    int n,m;
    cin>>n>>m;
    
    for(int i=0;i<n;i++){
        for(int j=0;j<m;j++){
            cin>>a[i][j];
            ind[i+j].pb(i);
        }
    }
    
    int ans=0;
    for(int i=0;i<n+m-1;i++){
        
        int dp[ind[i].size()][3];
        
        for(int j=ind[i].size()-1;j>=0;j--){
            int x=ind[i][j],y=i-ind[i][j];
            dp[j][0]=0;dp[j][1]=0;dp[j][2]=0;
            
            if(j+1<ind[i].size()){
                dp[j][0]=max({dp[j+1][0],dp[j+1][1],dp[j+1][2]});
                dp[j][1]=max({dp[j+1][0],dp[j+1][1],dp[j+1][2]});
                dp[j][2]=max({dp[j+1][0],dp[j+1][1],dp[j+1][2]});
            }
            
            if(y+2<m && a[x][y]=='R' && a[x][y+1]=='G' && a[x][y+2]=='W') dp[j][1]++;
            if(x+2<n && a[x][y]=='R' && a[x+1][y]=='G' && a[x+2][y]=='W'){
                int mx=0;
                if(j+2<ind[i].size())mx=max({dp[j+2][0],dp[j+2][1],dp[j+2][2]});
                if(j+1<ind[i].size())mx=max({dp[j+1][0],dp[j+1][2]});
                    dp[j][2]=max(mx+1,dp[j][2]);
            }
            
        }
        ans+=max({dp[0][0],dp[0][1],dp[0][2]});
    }
    cout<<ans<<"\n";
}

Compilation message (stderr)

dango_maker.cpp: In function 'int main()':
dango_maker.cpp:30:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |             if(j+1<ind[i].size()){
      |                ~~~^~~~~~~~~~~~~~
dango_maker.cpp:39:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |                 if(j+2<ind[i].size())mx=max({dp[j+2][0],dp[j+2][1],dp[j+2][2]});
      |                    ~~~^~~~~~~~~~~~~~
dango_maker.cpp:40:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |                 if(j+1<ind[i].size())mx=max({dp[j+1][0],dp[j+1][2]});
      |                    ~~~^~~~~~~~~~~~~~

• Subtask 1: 0 / 13
• Subtask 2: 0 / 20
• Subtask 3: 0 / 67