oj.uz

Submission #414682

# Submission time Handle Problem Language Result Execution time Memory
414682 2021-05-31T03:51:25 Z jamezzz Worst Reporter 3 (JOI18_worst_reporter3) C++14
100 / 100
 725 ms 25160 KB 
#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#include <ext/rope>
using namespace __gnu_cxx;
 
typedef tree<long long, null_type, less<long long>,
rb_tree_tag, tree_order_statistics_node_update> pbds;
//less_equal for identical elements
 
//#define DEBUG
 
#ifdef DEBUG
#define debug(...) printf(__VA_ARGS__);
#else
#define debug(...)
#endif
#define sf scanf
#define pf printf
#define fi first
#define se second
#define pb emplace_back
#define sz(x) (int)x.size()
#define mnto(x,y) x=min(x,(__typeof__(x))y)
#define mxto(x,y) x=max(x,(__typeof__(x))y)
#define INF 1023456789
#define LINF 1023456789123456789
#define all(x) x.begin(), x.end()
typedef long long ll;
typedef long double ld;
typedef pair<ll, ll> pll;
typedef pair<int, int> ii;
typedef tuple<int, int, int> iii;
typedef tuple<int, int, int, int> iiii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<pll> vll;
 
int n,q,d[500005],t,l,r;
vector<int> v;
 
int calc(int tm,int x){
	//advance v[x] every v[x] seconds
	//starts at -x
	if(tm/v[x]>(1e9+x)/v[x])return INF;
	return tm/v[x]*v[x]-x;
}
 
int main(){
	sf("%d%d",&n,&q);
	for(int i=0;i<n;++i)sf("%d",&d[i]);
	v.pb(1);int cur=1;
	for(int i=0;i<n;++i){
		int nx=(d[i]+cur-1)/cur;
		if(nx>1e9/cur)break;
		cur*=nx;v.pb(cur);
	}
	n=sz(v);
	//earlier has further position
	for(int i=0;i<q;++i){
		sf("%d%d%d",&t,&l,&r);
		int lo=0,hi=n-1,mid,rlo=-1,rhi=-1;
		while(lo<=hi){
			mid=(lo+hi)/2;
			if(calc(t,mid)>=l){
				rlo=mid;
				lo=mid+1;
			}
			else hi=mid-1;
		}
		lo=0,hi=n-1;
		while(lo<=hi){
			mid=(lo+hi)/2;
			if(r>=calc(t,mid)){
				rhi=mid;
				hi=mid-1;
			}
			else lo=mid+1;
		}
		if(rhi==-1||rlo<rhi)pf("0\n");
		else pf("%d\n",rlo-rhi+1);
	}
}

Compilation message

worst_reporter3.cpp: In function 'int main()':
worst_reporter3.cpp:52:4: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |  sf("%d%d",&n,&q);
      |    ^
worst_reporter3.cpp:53:24: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   53 |  for(int i=0;i<n;++i)sf("%d",&d[i]);
      |                        ^
worst_reporter3.cpp:63:5: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   63 |   sf("%d%d%d",&t,&l,&r);
      |     ^

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 609 ms 7276 KB Output is correct
2 Correct 620 ms 22692 KB Output is correct
3 Correct 637 ms 22840 KB Output is correct
4 Correct 659 ms 22796 KB Output is correct
5 Correct 650 ms 22912 KB Output is correct
6 Correct 725 ms 22748 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 2 ms 204 KB Output is correct
5 Correct 2 ms 204 KB Output is correct
6 Correct 2 ms 332 KB Output is correct

Subtask #3
81.0 / 81.0

# Verdict Execution time Memory Grader output
1 Correct 609 ms 7276 KB Output is correct
2 Correct 620 ms 22692 KB Output is correct
3 Correct 637 ms 22840 KB Output is correct
4 Correct 659 ms 22796 KB Output is correct
5 Correct 650 ms 22912 KB Output is correct
6 Correct 725 ms 22748 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 2 ms 204 KB Output is correct
11 Correct 2 ms 204 KB Output is correct
12 Correct 2 ms 332 KB Output is correct
13 Correct 299 ms 19120 KB Output is correct
14 Correct 308 ms 19712 KB Output is correct
15 Correct 339 ms 18544 KB Output is correct
16 Correct 293 ms 19016 KB Output is correct
17 Correct 486 ms 24712 KB Output is correct
18 Correct 510 ms 24636 KB Output is correct
19 Correct 478 ms 24624 KB Output is correct
20 Correct 494 ms 24864 KB Output is correct
21 Correct 481 ms 24804 KB Output is correct
22 Correct 489 ms 24604 KB Output is correct
23 Correct 494 ms 24960 KB Output is correct
24 Correct 506 ms 24612 KB Output is correct
25 Correct 700 ms 22832 KB Output is correct
26 Correct 679 ms 22792 KB Output is correct
27 Correct 538 ms 24892 KB Output is correct
28 Correct 531 ms 25156 KB Output is correct
29 Correct 516 ms 23624 KB Output is correct
30 Correct 549 ms 24216 KB Output is correct
31 Correct 544 ms 25160 KB Output is correct
32 Correct 529 ms 21392 KB Output is correct
33 Correct 1 ms 204 KB Output is correct