Submission #230044

#	Time	Username	Problem	Language	Result	Execution time	Memory
230044		nickmet2004	Bitaro the Brave (JOI19_ho_t1)	C++11	0 / 100	5 ms	384 KiB

joi2019_ho_t1

#include<bits/stdc++.h>
#define ll long long

using namespace std;

const int N = 2005;

int H , W;
string s[N];
int Jo[N][N] , Ji[N][N];

ll solve(){
    for(int i = 0; i < H; ++i){
        int cntO = 0;
        for(int j = W - 1; j >= 0; --j){
            if(s[i][j] == 'O') ++cntO;
            if(s[i][j] == 'J') Jo[i][j] = cntO;
        }
    }
    for(int i = 0; i < W; ++i){
        int cntI = 0;
        for(int j = H - 1; j>= 0; --j){
            if(s[j][i] == 'I') ++cntI;
            if(s[j][i] == 'J') Ji[j][i] = cntI;
        }
    }
    ll ans = 0;
    for(int i = 0; i < H; ++i){
        for(int j = 0; j < W; ++j){
            ans += 1LL * (Jo[i][j] * Ji[i][j]);
        }
    }
}

int main (){
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin >> H >> W;
    for(int i = 0; i < H; ++i) cin >> s[i];
    cout << solve() << endl;

}

Compilation message (stderr)

joi2019_ho_t1.cpp: In function 'long long int solve()':
joi2019_ho_t1.cpp:33:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^

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