Submission #134405

#	Time	Username	Problem	Language	Result	Execution time	Memory
134405		duality	Candies (JOI18_candies)	C++11	100 / 100	152 ms	11000 KiB

candies

#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 ----------

int A[200000];
int l[200001],r[200001];
LLI rs[200001];
priority_queue<pair<LLI,pii> > H;
int main() {
    int i;
    int N;
    scanf("%d",&N);
    for (i = 0; i < N; i++) scanf("%d",&A[i]);

    LLI ans = 0;
    for (i = 0; i <= N; i++) {
        l[i] = i-1,r[i] = i+1;
        if (i < N) rs[i] = A[i],H.push(mp(A[i],mp(i,i+1)));
    }
    while (!H.empty()) {
        int a = H.top().second.first,b = H.top().second.second;
        LLI d = H.top().first;
        H.pop();

        if ((r[a] != b) || (l[b] != a)) continue;
        ans += d,printf("%lld\n",ans);
        if (l[a] != -1) r[l[a]] = r[b];
        if (r[b] != N+1) l[r[b]] = l[a];
        if ((l[a] != -1) && (r[b] != N+1)) {
            rs[l[a]] += rs[b]-d;
            H.push(mp(rs[l[a]],mp(l[a],r[b])));
        }
    }

    return 0;
}

Compilation message (stderr)

candies.cpp: In function 'int main()':
candies.cpp:65:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&N);
     ~~~~~^~~~~~~~~
candies.cpp:66:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for (i = 0; i < N; i++) scanf("%d",&A[i]);
                             ~~~~~^~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 92 / 92