Submission #134395

#	Time	Username	Problem	Language	Result	Execution time	Memory
134395		duality	Worst Reporter 3 (JOI18_worst_reporter3)	C++11	100 / 100	500 ms	25464 KiB

worst_reporter3

#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 D[500000],p[500001];
struct group { int s,e,p; };
vector<group> groups;
int main() {
    int i;
    int N,Q;
    scanf("%d %d",&N,&Q);
    for (i = 0; i < N; i++) scanf("%d",&D[i]);

    p[0] = 1;
    for (i = 0; i < N; i++) {
        int x = (D[i]+p[i]-1)/p[i];
        p[i+1] = p[i]*x;
        if (p[i+1] > 1.1e9) p[i+1] = 1.1e9;
    }
    for (i = 0; i <= N; i++) {
        if ((i == 0) || (p[i] != p[i-1])) groups.pb((group){-i,-i,p[i]});
        else groups.back().s = -i;
    }

    int j,T,L,R;
    for (i = 0; i < Q; i++) {
        scanf("%d %d %d",&T,&L,&R);
        int ans = 0;
        for (j = 0; j < groups.size(); j++) {
            int x = (T/groups[j].p)*groups[j].p;
            int s = max(groups[j].s+x,L),e = min(groups[j].e+x,R);
            if (s <= e) ans += e-s+1;
        }
        printf("%d\n",ans);
    }

    return 0;
}

Compilation message (stderr)

worst_reporter3.cpp: In function 'int main()':
worst_reporter3.cpp:82:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (j = 0; j < groups.size(); j++) {
                     ~~^~~~~~~~~~~~~~~
worst_reporter3.cpp:64:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d",&N,&Q);
     ~~~~~^~~~~~~~~~~~~~~
worst_reporter3.cpp:65:34: 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",&D[i]);
                             ~~~~~^~~~~~~~~~~~
worst_reporter3.cpp:80:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %d",&T,&L,&R);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 12 / 12
• Subtask 3: 81 / 81