Submission #155647

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
155647	2019-09-29 14:34:40	karma	Lottery (CEOI18_lot)	C++14	45 / 100	1899 ms	41364 KiB

lot

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#include<bits/stdc++.h>
#define Task     "test"
#define pb       emplace_back
using namespace std;
const int N = int(1e4) + 1;
int f[N][N], pre[N], a[N];
int n, l, lim, q, k;
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    if(fopen(Task".inp", "r")) {
        freopen(Task".inp", "r", stdin);
        freopen(Task".out", "w", stdout);
    }
    cin >> n >> l; lim = n - l + 1;
    for(int i = 1; i <= n; ++i) cin >> a[i];
    for(int j = 1; j <= lim; ++j) {
        for(int i = 1; i <= n; ++i) {
            if(i + j > n) break;
            if(a[i] != a[i + j]) pre[i] = pre[i - 1] + 1;
            else pre[i] = pre[i - 1];
        }
        for(int i = 0; i < lim; ++i) {
            if(i + j + l > n) break;
            ++f[i + 1][pre[i + l] - pre[i]];
            ++f[i + j + 1][pre[i + l] - pre[i]];
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

lot.cpp: In function 'int main()':
lot.cpp:16:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen(Task".inp", "r", stdin);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
lot.cpp:17:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen(Task".out", "w", stdout);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 25 / 25
• Subtask 2: 20 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20