oj.uz

Submission #956694

# Submission time Handle Problem Language Result Execution time Memory
956694 2024-04-02T10:54:33 Z Batorgil952 Sum Zero (RMI20_sumzero) C++14
61 / 100
 278 ms 28864 KB 
#include<bits/stdc++.h>
#define ll long long
#define pb push_back
#define mp make_pair
 
using namespace std;
 
const int N=4e5+5;
int dp[N][12];
int b[N];
unordered_map< ll, int > M;
 
int main(){
	int n, i, j, q, l, r, ans, x;
	ll s;
	
	scanf("%d",&n);
	
	s=0;
	M[0]=0;
	for(i=1; i<=n; i++){
		scanf("%d",&x);
		s+=x;
		if(M[s]!=0){
			dp[i][0]=M[s]+1;
		}
		else{
			if(s==0) dp[i][0]=1;
			else dp[i][0]=-1;
		}
		if(dp[i][0]==-1 && i>1){
			dp[i][0]=dp[i-1][0];
		}
		else if(i>1) dp[i][0]=max(dp[i][0], dp[i-1][0]);
		M[s]=i;
	}
	
	
	for(i=1; i<=n; i++){
		for(j=1; j<=11; j++){
			if((dp[dp[i][j-1]-1][j-1]-1)>0) dp[i][j]=dp[dp[dp[i][j-1]-1][j-1]-1][j-1];
			else dp[i][j]=-1, j=20;
		}
	}
	
	b[0]=1;
	for(i=1; i<=11; i++){
		b[i]=b[i-1]*3;
	}
	
	scanf("%d",&q);
	
	while(q--){
		scanf("%d",&l);
		scanf("%d",&r);
		ans=0;
		for(i=11; i>=0; i--){
			if(r>=l){
				if(dp[r][i]>=l){
					if(dp[dp[r][i]-1][i]>=l){
						ans+=2*b[i];
						r=dp[dp[r][i]-1][i]-1;
						continue;
					}
					ans+=b[i];
					r=dp[r][i]-1;
				}
			}
		}
		printf("%d\n", ans);
	}
	
	return 0;
}

Compilation message

sumzero.cpp: In function 'int main()':
sumzero.cpp:17:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |  scanf("%d",&n);
      |  ~~~~~^~~~~~~~~
sumzero.cpp:22:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |   scanf("%d",&x);
      |   ~~~~~^~~~~~~~~
sumzero.cpp:51:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |  scanf("%d",&q);
      |  ~~~~~^~~~~~~~~
sumzero.cpp:54:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   54 |   scanf("%d",&l);
      |   ~~~~~^~~~~~~~~
sumzero.cpp:55:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   55 |   scanf("%d",&r);
      |   ~~~~~^~~~~~~~~

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2396 KB Output is correct
2 Correct 3 ms 2648 KB Output is correct
3 Correct 3 ms 2652 KB Output is correct
4 Correct 3 ms 2396 KB Output is correct
5 Correct 2 ms 2396 KB Output is correct
6 Correct 3 ms 2504 KB Output is correct

Subtask #2
39.0 / 39.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2396 KB Output is correct
2 Correct 3 ms 2648 KB Output is correct
3 Correct 3 ms 2652 KB Output is correct
4 Correct 3 ms 2396 KB Output is correct
5 Correct 2 ms 2396 KB Output is correct
6 Correct 3 ms 2504 KB Output is correct
7 Correct 54 ms 8540 KB Output is correct
8 Correct 61 ms 9172 KB Output is correct
9 Correct 58 ms 7508 KB Output is correct
10 Correct 54 ms 8616 KB Output is correct
11 Correct 48 ms 8368 KB Output is correct
12 Correct 57 ms 7464 KB Output is correct

Subtask #3
0 / 39.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2396 KB Output is correct
2 Correct 3 ms 2648 KB Output is correct
3 Correct 3 ms 2652 KB Output is correct
4 Correct 3 ms 2396 KB Output is correct
5 Correct 2 ms 2396 KB Output is correct
6 Correct 3 ms 2504 KB Output is correct
7 Correct 54 ms 8540 KB Output is correct
8 Correct 61 ms 9172 KB Output is correct
9 Correct 58 ms 7508 KB Output is correct
10 Correct 54 ms 8616 KB Output is correct
11 Correct 48 ms 8368 KB Output is correct
12 Correct 57 ms 7464 KB Output is correct
13 Runtime error 278 ms 28864 KB Memory limit exceeded
14 Halted 0 ms 0 KB -