Submission #549512

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
549512	2022-04-16 01:56:19	theshadow_04	Skyscraper (JOI16_skyscraper)	C++14	0 / 100	258 ms	101340 KiB

skyscraper

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// annotshy
#include <bits/stdc++.h>
#define Task "CF"
#define MOD 1000000007
using namespace std;
const int maxn = 200005;
int n, l;
int a[maxn];
int dp[(1 << 14) + 5][15][105];
void Solve(int Test) {
  cin >> n >> l;
  for(int i = 0; i < n; ++ i) cin >> a[i];
  memset(dp, 0, sizeof dp);
  for(int i = 0; i < n; ++ i) {
    dp[(1 << i)][i][0] = 1;
  }
  for(int mask = 0; mask < (1 << n); ++ mask) {
    for(int last = 0; last < n; ++ last) {
      for(int s = 0; s <= l; ++ s) {
        if(dp[mask][last][s] == 0 || !(mask >> last & 1)) continue;
        for(int nex = 0; nex < n; ++ nex) {
          if(mask >> nex & 1) continue;
          (dp[mask + (1 << nex)][nex][s + abs(a[last] - a[nex])] += dp[mask][last][s]) %= MOD;
        }
 
 
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Compilation message (stderr)

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:47:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |     freopen(Task".inp", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
skyscraper.cpp:48:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |     freopen(Task".out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3: 0 / 80