Submission #94169

#	Time	Username	Problem	Language	Result	Execution time	Memory
94169		autumn_eel	Worst Reporter 3 (JOI18_worst_reporter3)	C++14	100 / 100	1116 ms	12816 KiB

worst_reporter3

#include <bits/stdc++.h>
#define rep(i,n)for(int i=0;i<(n);i++)
using namespace std;
typedef long long ll;

int n;
ll d[600000];
ll a[600000];

int calc(ll x,ll T){
	ll l=-1,r=n+1;
	while(r-l>1){
		int t=(l+r)/2;
		if(-t+(T/a[t])*a[t]>=x)l=t;
		else r=t;
	}
	return r;
}

int main(){
	int q;scanf("%d%d",&n,&q);
	rep(i,n)scanf("%lld",&d[i+1]);
	a[0]=1;
	for(int i=1;i<=n;i++){
		ll t=(d[i]+a[i-1]-1)/a[i-1];
		a[i]=t*a[i-1];
	}
	rep(i,q){
		ll t,l,r;scanf("%lld%lld%lld",&t,&l,&r);
		printf("%d\n",calc(l,t)-calc(r+1,t));
	}
}

Compilation message (stderr)

worst_reporter3.cpp: In function 'int main()':
worst_reporter3.cpp:21:13: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  int q;scanf("%d%d",&n,&q);
        ~~~~~^~~~~~~~~~~~~~
worst_reporter3.cpp:22:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  rep(i,n)scanf("%lld",&d[i+1]);
          ~~~~~^~~~~~~~~~~~~~~~
worst_reporter3.cpp:29:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   ll t,l,r;scanf("%lld%lld%lld",&t,&l,&r);
            ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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