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Submission #976977

# Submission time Handle Problem Language Result Execution time Memory
976977 2024-05-07T09:57:33 Z Batorgil952 Strange Device (APIO19_strange_device) C++14
20 / 100
 2813 ms 524288 KB 
#include<bits/stdc++.h>
#define ll long long
#define pb push_back
#define mp make_pair
 
using namespace std;
 
const ll N=7e6+6;
struct Node{
	ll l;
	ll r;
	ll vl=-1;
	ll vr=-1;
	bool al=0;
	bool ar=0;
	ll val=0;
};
Node tree[N];
ll K;
 
ll GCD(ll x, ll y){
	while(x*y!=0){
		if(x>y) x%=y;
		else y%=x;
	}
	return x+y;
}
 
void update(ll v, ll ql, ll qr){
	if(tree[v].val==tree[v].r-tree[v].l+1){
		return;
	}
	if(qr<tree[v].l && tree[v].r<ql){
		return;
	}
	if(ql<=tree[v].l && tree[v].r<=qr){
		tree[v].val=tree[v].r-tree[v].l+1;
		return;
	}
	ll mid=(tree[v].l+tree[v].r)/2;
	if(qr<=mid){
		if(!tree[v].al){
			if(tree[v].vl==-1){
				K++;
				tree[v].vl=K;
				tree[tree[v].vl].l=tree[v].l;
				tree[tree[v].vl].r=mid;
				update(tree[v].vl, ql, qr);
			}
			else if(tree[tree[v].vl].val!=mid-tree[v].l+1){
				update(tree[v].vl, ql, qr);
			}
		}
	}
	else if(mid+1<=ql){
		if(!tree[v].ar){
			if(tree[v].vr==-1){
				K++;
				tree[v].vr=K;
				tree[tree[v].vr].l=mid+1;
				tree[tree[v].vr].r=tree[v].r;
				update(tree[v].vr, ql, qr);
			}
			else if(tree[tree[v].vr].val!=tree[v].r-mid){
				update(tree[v].vr, ql, qr);
			}
		}
	}
	else if(ql<=tree[v].l){
		tree[v].al=1;
		if(!tree[v].ar){
			if(tree[v].vr==-1){
				K++;
				tree[v].vr=K;
				tree[tree[v].vr].l=mid+1;
				tree[tree[v].vr].r=tree[v].r;
				update(tree[v].vr, ql, qr);
			}
			else if(tree[tree[v].vr].val!=tree[v].r-mid){
				update(tree[v].vr, ql, qr);
			}
		}
	}
	else if(qr>=tree[v].r){
		tree[v].ar=1;
		if(!tree[v].al){
			if(tree[v].vl==-1){
				K++;
				tree[v].vl=K;
				tree[tree[v].vl].l=tree[v].l;
				tree[tree[v].vl].r=mid;
				update(tree[v].vl, ql, qr);
			}
			else if(tree[tree[v].vl].val!=mid-tree[v].l+1){
				update(tree[v].vl, ql, qr);
			}
		}
	}
	else{
		if(tree[v].vl==-1){
			K++;
			tree[v].vl=K;
			tree[tree[v].vl].l=tree[v].l;
			tree[tree[v].vl].r=mid;
			update(tree[v].vl, ql, qr);
		}
		else if(tree[tree[v].vl].val!=mid-tree[v].l+1){
			update(tree[v].vl, ql, qr);
		}
		if(tree[v].vr==-1){
			K++;
			tree[v].vr=K;
			tree[tree[v].vr].l=mid+1;
			tree[tree[v].vr].r=tree[v].r;
			update(tree[v].vr, ql, qr);
		}
		else if(tree[tree[v].vr].val!=tree[v].r-mid){
			update(tree[v].vr, ql, qr);
		}
	}
	tree[v].val=0;
	if(tree[v].al==1){
		tree[v].val+=(mid-tree[v].l+1);
	}
	else tree[v].val+=tree[tree[v].vl].val;
	if(tree[v].ar==1){
		tree[v].val+=(tree[v].r-mid);
	}
	else tree[v].val+=tree[tree[v].vr].val;
	
}
 
ll query(ll v, ll l, ll r){
	return tree[v].val;
}
 
 
int main(){
	ll n, i, A, B, l, r, k, m, ma;
	
	scanf("%lld",&n);
	scanf("%lld",&A);
	scanf("%lld",&B);
	
	m=GCD(B+1, A);
	A/=m;
	ma=1000000000000000002;
	if(ma/A<B){
		k=ma;
	}
	else{
		k=A*B;
	}
// 	cout<<k<<endl;
	
	tree[0].l=0;
	tree[0].r=k-1;
	K=0;
	for(i=1; i<=n; i++){
		scanf("%lld",&l);
		scanf("%lld",&r);
		if(r-l+1>=k) update(0, 0, k-1);
		else{
			if(l%k<=r%k){
				update(0, l%k, r%k);
			}
			else{
				update(0, l%k, k-1);
				update(0, 0, r%k);
			}
		}
	}
	
	printf("%lld\n", query(0, 0, k-1));
	
	return 0;
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:141:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  141 |  scanf("%lld",&n);
      |  ~~~~~^~~~~~~~~~~
strange_device.cpp:142:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  142 |  scanf("%lld",&A);
      |  ~~~~~^~~~~~~~~~~
strange_device.cpp:143:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  143 |  scanf("%lld",&B);
      |  ~~~~~^~~~~~~~~~~
strange_device.cpp:160:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  160 |   scanf("%lld",&l);
      |   ~~~~~^~~~~~~~~~~
strange_device.cpp:161:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  161 |   scanf("%lld",&r);
      |   ~~~~~^~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 117 ms 328996 KB Output is correct
2 Correct 96 ms 329120 KB Output is correct
3 Correct 97 ms 328944 KB Output is correct
4 Correct 89 ms 329040 KB Output is correct
5 Correct 89 ms 329112 KB Output is correct
6 Correct 119 ms 329140 KB Output is correct
7 Correct 91 ms 329044 KB Output is correct
8 Correct 101 ms 329092 KB Output is correct
9 Correct 89 ms 329040 KB Output is correct
10 Correct 92 ms 328984 KB Output is correct
11 Correct 89 ms 329040 KB Output is correct
12 Correct 92 ms 329108 KB Output is correct
13 Correct 89 ms 329092 KB Output is correct
14 Correct 102 ms 329112 KB Output is correct
15 Correct 91 ms 329188 KB Output is correct
16 Correct 100 ms 329152 KB Output is correct
17 Correct 130 ms 329040 KB Output is correct
18 Correct 87 ms 329040 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 90 ms 329144 KB Output is correct
2 Correct 90 ms 329176 KB Output is correct
3 Correct 90 ms 329044 KB Output is correct
4 Correct 89 ms 329084 KB Output is correct
5 Correct 91 ms 328940 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 87 ms 329040 KB Output is correct
2 Correct 88 ms 329148 KB Output is correct
3 Correct 95 ms 329136 KB Output is correct
4 Correct 102 ms 329040 KB Output is correct
5 Correct 396 ms 329180 KB Output is correct

Subtask #4
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 94 ms 329044 KB Output is correct
2 Correct 522 ms 329200 KB Output is correct
3 Runtime error 2813 ms 524288 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 94 ms 329044 KB Output is correct
2 Correct 522 ms 329200 KB Output is correct
3 Runtime error 2813 ms 524288 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 94 ms 329044 KB Output is correct
2 Correct 522 ms 329200 KB Output is correct
3 Runtime error 2813 ms 524288 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 88 ms 329024 KB Output is correct
2 Correct 155 ms 329176 KB Output is correct
3 Correct 176 ms 329040 KB Output is correct
4 Runtime error 550 ms 524288 KB Execution killed with signal 9
5 Halted 0 ms 0 KB -

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 117 ms 328996 KB Output is correct
2 Correct 96 ms 329120 KB Output is correct
3 Correct 97 ms 328944 KB Output is correct
4 Correct 89 ms 329040 KB Output is correct
5 Correct 89 ms 329112 KB Output is correct
6 Correct 119 ms 329140 KB Output is correct
7 Correct 91 ms 329044 KB Output is correct
8 Correct 101 ms 329092 KB Output is correct
9 Correct 89 ms 329040 KB Output is correct
10 Correct 92 ms 328984 KB Output is correct
11 Correct 89 ms 329040 KB Output is correct
12 Correct 92 ms 329108 KB Output is correct
13 Correct 89 ms 329092 KB Output is correct
14 Correct 102 ms 329112 KB Output is correct
15 Correct 91 ms 329188 KB Output is correct
16 Correct 100 ms 329152 KB Output is correct
17 Correct 130 ms 329040 KB Output is correct
18 Correct 87 ms 329040 KB Output is correct
19 Correct 90 ms 329144 KB Output is correct
20 Correct 90 ms 329176 KB Output is correct
21 Correct 90 ms 329044 KB Output is correct
22 Correct 89 ms 329084 KB Output is correct
23 Correct 91 ms 328940 KB Output is correct
24 Correct 87 ms 329040 KB Output is correct
25 Correct 88 ms 329148 KB Output is correct
26 Correct 95 ms 329136 KB Output is correct
27 Correct 102 ms 329040 KB Output is correct
28 Correct 396 ms 329180 KB Output is correct
29 Correct 94 ms 329044 KB Output is correct
30 Correct 522 ms 329200 KB Output is correct
31 Runtime error 2813 ms 524288 KB Execution killed with signal 9
32 Halted 0 ms 0 KB -