Submission #857813


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#include <bits/stdc++.h>
using namespace std;
typedef long long LL;
const int maxn = 1e5 + 5;
int dp[maxn][20];
int x[maxn];

int main(){
    int N, L, Q, a, b;
    scanf("%d", &N);
    for(int i = 1; i <= N; i++){
        scanf("%d", &x[i]);
    }
    scanf("%d", &L);
    x[0] = x[1];
    for(int i = 1, l = 0; i <= N; i++){
        while(x[i] - x[l] > L) l++;
        dp[i][0] = l;
        for(int j = 1; j < 20; j++){
            dp[i][j] = dp[dp[i][j - 1]][j - 1];
        }
    }
    scanf("%d", &Q);
    while(Q--){
        scanf("%d%d", &a, &b);
        if(a < b) swap(a, b);
        int ans = 0;
        for(int d = 19; d >= 0; d--){
            if(dp[a][d] >= b){
                ans += (1 << d);
                a = dp[a][d];
            }
        }
        if(a != b) ans++;
        printf("%d\n", ans);
    }
    return 0;
}

Submission Info

Submission Time
Task E - Tak and Hotels
User flag
Language C++14 (GCC 5.4.1)
Score 700
Code Size 876 Byte
Status AC
Exec Time 136 ms
Memory 9088 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:10:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &N);
                    ^
./Main.cpp:12:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &x[i]);
                           ^
./Main.cpp:14:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &L);
                    ^
./Main.cpp:23:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &Q);
                    ^
./Main.cpp:25:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d", &a, &b);
                              ^

Judge Result

Set Name Sample Subtask1 All
Score / Max Score 0 / 0 200 / 200 500 / 500
Status
AC × 1
AC × 14
AC × 27
Set Name Test Cases
Sample example_01.txt
Subtask1 example_01.txt, subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt, subtask1_10.txt, subtask1_11.txt, subtask1_12.txt, subtask1_13.txt
All example_01.txt, subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt, subtask1_10.txt, subtask1_11.txt, subtask1_12.txt, subtask1_13.txt, subtask2_01.txt, subtask2_02.txt, subtask2_03.txt, subtask2_04.txt, subtask2_05.txt, subtask2_06.txt, subtask2_07.txt, subtask2_08.txt, subtask2_09.txt, subtask2_10.txt, subtask2_11.txt, subtask2_12.txt, subtask2_13.txt
Case Name Status Exec Time Memory
example_01.txt AC 4 ms 256 KB
subtask1_01.txt AC 4 ms 256 KB
subtask1_02.txt AC 4 ms 256 KB
subtask1_03.txt AC 5 ms 384 KB
subtask1_04.txt AC 5 ms 384 KB
subtask1_05.txt AC 5 ms 384 KB
subtask1_06.txt AC 4 ms 256 KB
subtask1_07.txt AC 4 ms 256 KB
subtask1_08.txt AC 5 ms 384 KB
subtask1_09.txt AC 5 ms 384 KB
subtask1_10.txt AC 5 ms 384 KB
subtask1_11.txt AC 5 ms 384 KB
subtask1_12.txt AC 5 ms 384 KB
subtask1_13.txt AC 4 ms 384 KB
subtask2_01.txt AC 121 ms 8832 KB
subtask2_02.txt AC 135 ms 8960 KB
subtask2_03.txt AC 120 ms 8832 KB
subtask2_04.txt AC 63 ms 5760 KB
subtask2_05.txt AC 80 ms 5888 KB
subtask2_06.txt AC 95 ms 8576 KB
subtask2_07.txt AC 124 ms 8960 KB
subtask2_08.txt AC 132 ms 8960 KB
subtask2_09.txt AC 136 ms 8960 KB
subtask2_10.txt AC 132 ms 8960 KB
subtask2_11.txt AC 128 ms 8320 KB
subtask2_12.txt AC 96 ms 9088 KB
subtask2_13.txt AC 94 ms 8576 KB