Submission #1261357

#	Time	Username	Problem	Language	Result	Execution time	Memory
1261357		sasde	Bitaro the Brave (JOI19_ho_t1)	C++20	0 / 100	1 ms	324 KiB

joi2019_ho_t1

#include<bits/stdc++.h>
using namespace std;
const int N=3e3+5,lg=30,mod=1e9+7;
int hieght,width;
bitset<N>s[N],s1[N];
char a[N][N];

main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    cin >> hieght >> width;
    for(int i=1;i<=hieght;++i){
        for(int j=1;j<=width;++j){
            cin >> a[i][j];
        }
    }
    long long ans=0;
    for(int k=1;k<=hieght;++k){
        long long val=0;
        for(int l=1;l<=width;++l){
                        ans+=val;
                    if(a[k][l]=='I'){
                        bitset<N>x=s[l]&s1[l];
                        val+=x.count();
                    }
        }
        for(int l=1;l<=width;++l){
            if(a[k][l]=='O')s1[l][k]=1;
            if(a[k][l]=='J')s[l][k]=1;
        }
    }
    cout << ans;

}

Compilation message (stderr)

joi2019_ho_t1.cpp:8:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    8 | main()
      | ^~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 50