Submission #235872

#	Time	Username	Problem	Language	Result	Execution time	Memory
235872		PeppaPig	Lightning Conductor (POI11_pio)	C++14	100 / 100	154 ms	15992 KiB

pio

#include <bits/stdc++.h>

using namespace std;

const int N = 5e5+5;

int n, A[N], pre[N], suf[N];

int main() {
    scanf("%d", &n);
    for(int i = 1; i <= n; i++) scanf("%d", A + i);
    for(int i = 1, mx = -1; i <= n; i++) {
        if(A[i] <= mx) continue;
        mx = max(mx, A[i]);
        for(int j = 0; i + j * j + 1 <= n; j++)
            pre[i + j * j + 1] = max(pre[i + j * j + 1], A[i] + j + 1);
    }
    for(int i = n, mx = -1; i; i--)  {
        if(A[i] <= mx) continue;
        mx = max(mx, A[i]);
        for(int j = 0; i - j * j - 1 > 0; j++)
            suf[i - j * j - 1] = max(suf[i - j * j - 1], A[i] + j + 1);
    }
    for(int i = 1; i <= n; i++) pre[i] = max(pre[i], pre[i - 1]);
    for(int i = n; i; i--) suf[i] = max(suf[i], suf[i + 1]);
    for(int i = 1; i <= n; i++)
        printf("%d\n", max(0, max(pre[i], suf[i]) - A[i]));

    return 0;
}

Compilation message (stderr)

pio.cpp: In function 'int main()':
pio.cpp:10:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
pio.cpp:11:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(int i = 1; i <= n; i++) scanf("%d", A + i);
                                 ~~~~~^~~~~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 9 / 9
• Subtask 3: 9 / 9
• Subtask 4: 9 / 9
• Subtask 5: 9 / 9
• Subtask 6: 9 / 9
• Subtask 7: 9 / 9
• Subtask 8: 9 / 9
• Subtask 9: 9 / 9
• Subtask 10: 9 / 9
• Subtask 11: 10 / 10