Submission #677801

#	Time	Username	Problem	Language	Result	Execution time	Memory
677801		qwerasdfzxcl	3단 점프 (JOI19_jumps)	C++17	19 / 100	497 ms	144304 KiB

jumps

#include <bits/stdc++.h>

typedef long long ll;
using namespace std;
int a[5050], ans[5050][5050], dp[5050][5050];

int main(){
    int n;
    scanf("%d", &n);
    for (int i=1;i<=n;i++) scanf("%d", a+i);

    for (int i=1;i<=n;i++){
        int pt = i, val = 0;
        for (int j=i+2;j<=n;j++){
            if (pt+1 - i <= j - (pt+1)){
                ++pt;
                val = max(val, a[pt]);
            }
            ans[i][j] = a[i] + a[j] + val;
        }
    }

    for (int d=2;d<n;d++){
        for (int i=1;i<=n-d;i++){
            int j = i+d;
            dp[i][j] = max(ans[i][j], max(dp[i+1][j], dp[i][j-1]));
        }
    }

    int q;
    scanf("%d", &q);
    while(q--){
        int x, y;
        scanf("%d %d", &x, &y);
        printf("%d\n", dp[x][y]);
    }
    return 0;
}

Compilation message (stderr)

jumps.cpp: In function 'int main()':
jumps.cpp:9:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
jumps.cpp:10:33: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |     for (int i=1;i<=n;i++) scanf("%d", a+i);
      |                            ~~~~~^~~~~~~~~~~
jumps.cpp:31:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |     scanf("%d", &q);
      |     ~~~~~^~~~~~~~~~
jumps.cpp:34:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |         scanf("%d %d", &x, &y);
      |         ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 14 / 14
• Subtask 3: 0 / 27
• Subtask 4: 0 / 54