Submission #135214

#	Time	Username	Problem	Language	Result	Execution time	Memory
135214		duality	Dango Maker (JOI18_dango_maker)	C++11	100 / 100	720 ms	18056 KiB

dango_maker

#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 grid[3000][3000];
int main() {
    int i,j;
    int N,M;
    scanf("%d %d",&N,&M);
    for (i = 0; i < N; i++) {
        for (j = 0; j < M; j++) scanf(" %c",&grid[i][j]);
    }

    int ans = 0;
    for (i = 0; i < N+M-1; i++) {
        vi h,v;
        for (j = 0; j < N; j++) {
            int x = i-j,y = j;
            if ((x >= 0) && (x+2 < M) && (grid[y][x] == 'R') && (grid[y][x+1] == 'G') && (grid[y][x+2] == 'W')) h.pb(j);
            if ((x >= 0) && (x < M) && (y+2 < N) && (grid[y][x] == 'R') && (grid[y+1][x] == 'G') && (grid[y+2][x] == 'W')) v.pb(j);
        }
        ans += h.size()+v.size();
        int k = 0;
        for (j = 0; j < h.size(); j++) {
            while ((k < v.size()) && (v[k] < h[j]-2)) k++;
            if ((k < v.size()) && (v[k] <= h[j])) k++,ans--;
        }
    }
    printf("%d\n",ans);

    return 0;
}

Compilation message (stderr)

dango_maker.cpp: In function 'int main()':
dango_maker.cpp:77:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (j = 0; j < h.size(); j++) {
                     ~~^~~~~~~~~~
dango_maker.cpp:78:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             while ((k < v.size()) && (v[k] < h[j]-2)) k++;
                     ~~^~~~~~~~~~
dango_maker.cpp:79:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             if ((k < v.size()) && (v[k] <= h[j])) k++,ans--;
                  ~~^~~~~~~~~~
dango_maker.cpp:62:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d",&N,&M);
     ~~~~~^~~~~~~~~~~~~~~
dango_maker.cpp:64:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         for (j = 0; j < M; j++) scanf(" %c",&grid[i][j]);
                                 ~~~~~^~~~~~~~~~~~~~~~~~~

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