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Submission #976989

# Submission time Handle Problem Language Result Execution time Memory
976989 2024-05-07T10:06:44 Z Batorgil952 Strange Device (APIO19_strange_device) C++14
20 / 100
 741 ms 524288 KB 
#include<bits/stdc++.h>
#define ll long long
#define pb push_back
#define mp make_pair
 
using namespace std;
 
const int N=1.2e7+6;
struct Node{
	ll l;
	ll r;
	int vl=-1;
	int vr=-1;
	bool al=0;
	bool ar=0;
	ll val=0;
};
Node tree[N];
int K;
 
ll GCD(ll x, ll y){
	while(x*y!=0){
		if(x>y) x%=y;
		else y%=x;
	}
	return x+y;
}
 
void update(int 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){
		tree[v].val+=(mid-tree[v].l+1);
	}
	else tree[v].val+=tree[tree[v].vl].val;
	if(tree[v].ar){
		tree[v].val+=(tree[v].r-mid);
	}
	else tree[v].val+=tree[tree[v].vr].val;
	
}
 
ll query(int v, ll l, ll r){
	return tree[v].val;
}
 
 
int main(){
    int n, i;
	ll A, B, l, r, k, m, ma;
	
	scanf("%d",&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:142:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  142 |  scanf("%d",&n);
      |  ~~~~~^~~~~~~~~
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",&A);
      |  ~~~~~^~~~~~~~~~~
strange_device.cpp:144:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  144 |  scanf("%lld",&B);
      |  ~~~~~^~~~~~~~~~~
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",&l);
      |   ~~~~~^~~~~~~~~~~
strange_device.cpp:162:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  162 |   scanf("%lld",&r);
      |   ~~~~~^~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 184 ms 469844 KB Output is correct
2 Correct 127 ms 470272 KB Output is correct
3 Correct 136 ms 470352 KB Output is correct
4 Correct 124 ms 470068 KB Output is correct
5 Correct 124 ms 469844 KB Output is correct
6 Correct 122 ms 469980 KB Output is correct
7 Correct 122 ms 470024 KB Output is correct
8 Correct 121 ms 469844 KB Output is correct
9 Correct 123 ms 469844 KB Output is correct
10 Correct 134 ms 469840 KB Output is correct
11 Correct 124 ms 469916 KB Output is correct
12 Correct 123 ms 470096 KB Output is correct
13 Correct 122 ms 469840 KB Output is correct
14 Correct 122 ms 469844 KB Output is correct
15 Correct 143 ms 469840 KB Output is correct
16 Correct 104 ms 470388 KB Output is correct
17 Correct 154 ms 472140 KB Output is correct
18 Correct 90 ms 469848 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 73 ms 469892 KB Output is correct
2 Correct 76 ms 469836 KB Output is correct
3 Correct 77 ms 470356 KB Output is correct
4 Correct 75 ms 469844 KB Output is correct
5 Correct 84 ms 470096 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 72 ms 469844 KB Output is correct
2 Correct 73 ms 470076 KB Output is correct
3 Correct 73 ms 469972 KB Output is correct
4 Correct 73 ms 469984 KB Output is correct
5 Correct 442 ms 483412 KB Output is correct

Subtask #4
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 74 ms 469984 KB Output is correct
2 Correct 502 ms 489632 KB Output is correct
3 Runtime error 741 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 74 ms 469984 KB Output is correct
2 Correct 502 ms 489632 KB Output is correct
3 Runtime error 741 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 74 ms 469984 KB Output is correct
2 Correct 502 ms 489632 KB Output is correct
3 Runtime error 741 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 74 ms 469840 KB Output is correct
2 Correct 131 ms 469944 KB Output is correct
3 Correct 170 ms 470076 KB Output is correct
4 Runtime error 686 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 184 ms 469844 KB Output is correct
2 Correct 127 ms 470272 KB Output is correct
3 Correct 136 ms 470352 KB Output is correct
4 Correct 124 ms 470068 KB Output is correct
5 Correct 124 ms 469844 KB Output is correct
6 Correct 122 ms 469980 KB Output is correct
7 Correct 122 ms 470024 KB Output is correct
8 Correct 121 ms 469844 KB Output is correct
9 Correct 123 ms 469844 KB Output is correct
10 Correct 134 ms 469840 KB Output is correct
11 Correct 124 ms 469916 KB Output is correct
12 Correct 123 ms 470096 KB Output is correct
13 Correct 122 ms 469840 KB Output is correct
14 Correct 122 ms 469844 KB Output is correct
15 Correct 143 ms 469840 KB Output is correct
16 Correct 104 ms 470388 KB Output is correct
17 Correct 154 ms 472140 KB Output is correct
18 Correct 90 ms 469848 KB Output is correct
19 Correct 73 ms 469892 KB Output is correct
20 Correct 76 ms 469836 KB Output is correct
21 Correct 77 ms 470356 KB Output is correct
22 Correct 75 ms 469844 KB Output is correct
23 Correct 84 ms 470096 KB Output is correct
24 Correct 72 ms 469844 KB Output is correct
25 Correct 73 ms 470076 KB Output is correct
26 Correct 73 ms 469972 KB Output is correct
27 Correct 73 ms 469984 KB Output is correct
28 Correct 442 ms 483412 KB Output is correct
29 Correct 74 ms 469984 KB Output is correct
30 Correct 502 ms 489632 KB Output is correct
31 Runtime error 741 ms 524288 KB Execution killed with signal 9
32 Halted 0 ms 0 KB -