Submission #1258715

#	Time	Username	Problem	Language	Result	Execution time	Memory
1258715		sunit	Bitaro the Brave (JOI19_ho_t1)	C++20	0 / 100	0 ms	324 KiB

joi2019_ho_t1

#include<bits/stdc++.h>

/*
    Chuppy no fat ######
 
    𖠋 𖠋 𖠋 𖠋 𖠋 Trùm copy code :3 
*/

#define int long long
#define bl bool
#define db double 
#define fl float 
#define st string 
#define pb push_back
#define pf push_front
#define is insert
#define endl "\n"
#define pba pop_back
#define pfr pop_front
#define ub upper_bound
#define lb lower_bound 
#define fi first 
#define se second 
#define FOR(i, l, r, st) for(int i = l; i <= r; i += st)
#define FOS(i, l, r, sl) for(int i = l; i >= r; i -= sl)
#define mii map<int, int>
#define us unordered_set 
#define pii pair<int, int>
#define vt vector
using namespace std;

const int maxn = 1e6 + 5;

const int mod = 1e9 + 7;

void suncuti() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
}

int H, W, pfsJ[3005][3005], pfsO[3005][3005], pfsI[3005][3005], stJ[3005][3005], edJ[3005][3005];

char A[3005][3005] , row[3005], low[3005];

main() {
    suncuti();

    cin >> H >> W;

    FOR(i, 1, H, 1) {
        FOR(j, 1, W, 1) {
            cin >> A[i][j];
        }
    }

    FOR(i, 1, H, 1) {
        FOR(j, 1, W, 1) {
            pfsI[i][j] = pfsI[i - 1][j] + (A[i][j] == 'I');
            pfsO[i][j] = pfsO[i][j - 1] + (A[i][j] == 'O');
        }
    }

    int cnt = 0;

    FOS(i, H, 1, 1) {
        FOS(j, W, 1, 1) {
            row[i] += (A[i][j] == 'O');
            low[j] += (A[i][j] == 'I');
        }
    }

    FOR(i, 1, H, 1) {
        FOR(j, 1, W, 1) {
            if(A[i][j] == 'J') {
                cnt += row[j] * low[i];
                // cout << i << " " << j << endl;
            }
        }
    }

    cout << cnt;
}

Compilation message (stderr)

joi2019_ho_t1.cpp:46:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   46 | main() {
      | ^~~~

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