Submission #123253

#	Time	Username	Problem	Language	Result	Execution time	Memory
123253		duality	Bitaro the Brave (JOI19_ho_t1)	C++11	100 / 100	587 ms	88412 KiB

joi2019_ho_t1

#define DEBUG 0

#include <bits/stdc++.h>
using namespace std;

#if DEBUG
// basic debugging macros
int __i__,__j__;
#define printLine(l) for(__i__=0;__i__<l;__i__++){cout<<"-";}cout<<endl
#define printLine2(l,c) for(__i__=0;__i__<l;__i__++){cout<<c;}cout<<endl
#define printVar(n) cout<<#n<<": "<<n<<endl
#define printArr(a,l) cout<<#a<<": ";for(__i__=0;__i__<l;__i__++){cout<<a[__i__]<<" ";}cout<<endl
#define print2dArr(a,r,c) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<a[__i__][__j__]<<" ";}cout<<endl;}
#define print2dArr2(a,r,c,l) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<setw(l)<<setfill(' ')<<a[__i__][__j__]<<" ";}cout<<endl;}

// advanced debugging class
// debug 1,2,'A',"test";
class _Debug {
    public:
        template<typename T>
        _Debug& operator,(T val) {
            cout << val << endl;
            return *this;
        }
};
#define debug _Debug(),
#else
#define printLine(l)
#define printLine2(l,c)
#define printVar(n)
#define printArr(a,l)
#define print2dArr(a,r,c)
#define print2dArr2(a,r,c,l)
#define debug
#endif

// define
#define MAX_VAL 999999999
#define MAX_VAL_2 999999999999999999LL
#define EPS 1e-6
#define mp make_pair
#define pb push_back

// typedef
typedef unsigned int UI;
typedef long long int LLI;
typedef unsigned long long int ULLI;
typedef unsigned short int US;
typedef pair<int,int> pii;
typedef pair<LLI,LLI> plli;
typedef vector<int> vi;
typedef vector<LLI> vlli;
typedef vector<pii> vpii;
typedef vector<plli> vplli;

// ---------- END OF TEMPLATE ----------

char S[3000][3000];
int a[3000][3000],b[3000][3000];
int main() {
    int i,j;
    int H,W;
    scanf("%d %d",&H,&W);
    for (i = 0; i < H; i++) {
        for (j = 0; j < W; j++) scanf(" %c",&S[i][j]);
    }

    LLI ans = 0;
    for (i = H-1; i >= 0; i--) {
        for (j = W-1; j >= 0; j--) {
            a[i][j] = ((j == W-1) ? 0:a[i][j+1])+(S[i][j] == 'O');
            b[i][j] = ((i == H-1) ? 0:b[i+1][j])+(S[i][j] == 'I');
            if (S[i][j] == 'J') ans += a[i][j]*b[i][j];
        }
    }
    printf("%lld\n",ans);

    return 0;
}

Compilation message (stderr)

joi2019_ho_t1.cpp: In function 'int main()':
joi2019_ho_t1.cpp:63:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d",&H,&W);
     ~~~~~^~~~~~~~~~~~~~~
joi2019_ho_t1.cpp:65:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         for (j = 0; j < W; j++) scanf(" %c",&S[i][j]);
                                 ~~~~~^~~~~~~~~~~~~~~~

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