Submission #398711

#	Time	Username	Problem	Language	Result	Execution time	Memory
398711		duality	Semiexpress (JOI17_semiexpress)	C++11	100 / 100	17 ms	2496 KiB

semiexpress

#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 S[3000];
vi poss;
int main() {
    int i;
    int N,M,K;
    int A,B,C;
    LLI T;
    scanf("%d %d %d",&N,&M,&K);
    scanf("%d %d %d %lld",&A,&B,&C,&T);
    for (i = 0; i < M; i++) scanf("%d",&S[i]),S[i]--;

    int j,ans = -1;
    for (i = 0; i < M; i++) {
        LLI t = T-(LLI) S[i]*B;
        if (i == M-1) {
            if (t >= 0) ans++;
            continue;
        }
        int x = S[i+1]-S[i]-1;
        if (t >= 0) {
            ans += min(t/A,(LLI) x)+1;
            int s = S[i]+min(t/A,(LLI) x)+1;
            for (j = 1; j <= K-M; j++) {
                if (s < S[i+1]) {
                    t = T-(LLI) S[i]*B-(LLI) (s-S[i])*C;
                    if (t >= 0) {
                        x = S[i+1]-s-1;
                        poss.pb(min(t/A,(LLI) x)+1);
                        s += min(t/A,(LLI) x)+1;
                    }
                    else break;
                }
            }
        }
    }
    sort(poss.begin(),poss.end(),greater<int>());
    for (i = 0; i < min(K-M,(int) poss.size()); i++) ans += poss[i];
    printf("%d\n",ans);

    return 0;
}

Compilation message (stderr)

semiexpress.cpp: In function 'int main()':
semiexpress.cpp:65:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   65 |     scanf("%d %d %d",&N,&M,&K);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~
semiexpress.cpp:66:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   66 |     scanf("%d %d %d %lld",&A,&B,&C,&T);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
semiexpress.cpp:67:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   67 |     for (i = 0; i < M; i++) scanf("%d",&S[i]),S[i]--;
      |                             ~~~~~^~~~~~~~~~~~

• Subtask 1: 18 / 18
• Subtask 2: 30 / 30
• Subtask 3: 52 / 52