Submission #40349

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
40349	2018-01-31 08:48:34	krauch	Watching (JOI13_watching)	C++14	100 / 100	172 ms	9192 KiB

watching

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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair < int, int > PII;
#define F first
#define S second
#define mkp make_pair
#define eb emplace_back
#define all(a) a.begin(), a.end()
#define sz(a) (int)a.size()
#define forn(x, a, b) for (int x = a; x <= b; ++x)
#define for1(x, a, b) for (int x = a; x >= b; --x)
const ll ool = 1e18 + 9;
const int N = 3e3 + 3, oo = 1e9 + 9;
int n, P, Q, a[N], d[N][N];
bool check(int W) {
    int ptr = 1;
    forn(i, 0, P) forn(j, 0, Q) d[i][j] = 1;
    forn(i, 0, P) {
        forn(j, 0, Q) {
            if (d[i][j] == -1) continue;
            int ptr = d[i][j];
            while (ptr <= n && a[ptr] - a[d[i][j]] + 1 <= W) {
                ++ptr;
 
 
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Compilation message (stderr)

watching.cpp: In function 'bool check(int)':
watching.cpp:23:9: warning: unused variable 'ptr' [-Wunused-variable]
     int ptr = 1;
         ^

• Subtask 1: 50 / 50
• Subtask 2: 50 / 50