Submission #44709

#	Time	Username	Problem	Language	Result	Execution time	Memory
44709		top34051	Worst Reporter 3 (JOI18_worst_reporter3)	C++17	100 / 100	1131 ms	7644 KiB

worst_reporter3

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

#define ll long long
const int maxn = 5e5 + 5;

int n,q;
ll dist[maxn];

int get(ll T, ll L) {
    int l = 0, r = n, mid, pos = -1;
    while(l<=r) {
        mid = (l+r)/2;
        if(L <= -mid + (T/dist[mid])*dist[mid]) {
            pos = mid;
            l = mid+1;
        }
        else r = mid-1;
    }
    return pos;
}

int main() {
    scanf("%d%d",&n,&q);
    dist[0] = 1;
    for(int i=1;i<=n;i++) {
        scanf("%lld",&dist[i]);
        dist[i] = (ll)ceil((double)dist[i]/dist[i-1]) * dist[i-1];
    }
    while(q--) {
        ll T, L, R; int res = 0;
        scanf("%lld%lld%lld",&T,&L,&R);
//        printf("\t");
//        for(int i=1;i<=n;i++) printf("%lld ",-i+(T/dist[i])*dist[i]);
//        printf("\n");
        printf("%d\n",get(T,L) - get(T,R+1));
    }
}

Compilation message (stderr)

worst_reporter3.cpp: In function 'int main()':
worst_reporter3.cpp:31:25: warning: unused variable 'res' [-Wunused-variable]
         ll T, L, R; int res = 0;
                         ^~~
worst_reporter3.cpp:24:10: 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:27:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld",&dist[i]);
         ~~~~~^~~~~~~~~~~~~~~~~
worst_reporter3.cpp:32:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld%lld%lld",&T,&L,&R);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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