Submission #1296260

#TimeUsernameProblemLanguageResultExecution timeMemory
1296260ayazKangaroo (CEOI16_kangaroo)C++20
Compilation error
0 ms0 KiB
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;

#ifdef LOCAL
    #include "debug.h"
#else
    #define debug(...) 42
#endif

#define ll long long
#define ld long double
#define pii pair<int,int>
#define all(x) (x).begin(), (x).end()
#define isz(x) (int)(x.size())
#define vi vector<int>
#define vvi vector<vi>
#define ost tree<pii, null_type, less<pii>, rb_tree_tag, tree_order_statistics_node_update>

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

const int sz = 2005, inf = 1000000000;
const ll mod = 1000000007, INF = 1000000000000000000;

int dp[sz][sz][sz][2];
// 0 -> increasing
// 1 -> decreasing
void solve() {
  int n, cs, cf;
  cin >> n >> cs >> cf;
  memset(dp, 0, sizeof(dp));
  dp[2][1][2][0] = 1;
  dp[2][2][1][1] = 1;
  for (int i = 3; i <= n; i++) {
    for (int s = 1; s <= i; s++) {
      for (int f = 1; f <= i; f++) {
        if (s == f) continue;
        for (int k = s; k < i; k++) {
          dp[i][s][f][0] += dp[i-1][k][f - (f > s)][1];
          dp[i][s][f][0] %= mod;
        }
        for (int k = 1; k < s; k++) {
          dp[i][s][f][1] += dp[i-1][k][f - (f > s)][0];
          dp[i][s][f][1] %= mod;
        }
      }
    }
  }
  cout << (dp[n][cs][cf][0] + dp[n][cs][cf][1]) % mod << '\n'; 
} 
void precompute() {}
signed main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
#ifdef LOCAL
  freopen("err.log", "w", stderr);
  freopen("in.txt", "r", stdin);
#endif
  precompute();

  solve();
  return 0;    
}

Compilation message (stderr)

/usr/lib/gcc/x86_64-linux-gnu/13/libstdc++.a(ios_init.o): in function `std::ios_base::Init::Init()':
(.text._ZNSt8ios_base4InitC2Ev+0x1f): failed to convert GOTPCREL relocation against '_ZNSt8ios_base4Init11_S_refcountE'; relink with --no-relax
(.text._ZNSt8ios_base4InitC2Ev+0x5f): relocation truncated to fit: R_X86_64_PC32 against symbol `__gnu_internal::buf_cout_sync' defined in .bss._ZN14__gnu_internal13buf_cout_syncE section in /usr/lib/gcc/x86_64-linux-gnu/13/libstdc++.a(globals_io.o)
(.text._ZNSt8ios_base4InitC2Ev+0x66): relocation truncated to fit: R_X86_64_PC32 against symbol `__gnu_internal::buf_cout_sync' defined in .bss._ZN14__gnu_internal13buf_cout_syncE section in /usr/lib/gcc/x86_64-linux-gnu/13/libstdc++.a(globals_io.o)
(.text._ZNSt8ios_base4InitC2Ev+0x71): relocation truncated to fit: R_X86_64_PC32 against symbol `__gnu_internal::buf_cout_sync' defined in .bss._ZN14__gnu_internal13buf_cout_syncE section in /usr/lib/gcc/x86_64-linux-gnu/13/libstdc++.a(globals_io.o)
(.text._ZNSt8ios_base4InitC2Ev+0x7c): relocation truncated to fit: R_X86_64_PC32 against symbol `__gnu_internal::buf_cout_sync' defined in .bss._ZN14__gnu_internal13buf_cout_syncE section in /usr/lib/gcc/x86_64-linux-gnu/13/libstdc++.a(globals_io.o)
(.text._ZNSt8ios_base4InitC2Ev+0xa0): relocation truncated to fit: R_X86_64_PC32 against symbol `__gnu_internal::buf_cout_sync' defined in .bss._ZN14__gnu_internal13buf_cout_syncE section in /usr/lib/gcc/x86_64-linux-gnu/13/libstdc++.a(globals_io.o)
(.text._ZNSt8ios_base4InitC2Ev+0xab): relocation truncated to fit: R_X86_64_PC32 against symbol `__gnu_internal::buf_cout_sync' defined in .bss._ZN14__gnu_internal13buf_cout_syncE section in /usr/lib/gcc/x86_64-linux-gnu/13/libstdc++.a(globals_io.o)
(.text._ZNSt8ios_base4InitC2Ev+0xc8): relocation truncated to fit: R_X86_64_PC32 against symbol `__gnu_internal::buf_cout_sync' defined in .bss._ZN14__gnu_internal13buf_cout_syncE section in /usr/lib/gcc/x86_64-linux-gnu/13/libstdc++.a(globals_io.o)
(.text._ZNSt8ios_base4InitC2Ev+0xe1): relocation truncated to fit: R_X86_64_PC32 against symbol `__gnu_internal::buf_cout_sync' defined in .bss._ZN14__gnu_internal13buf_cout_syncE section in /usr/lib/gcc/x86_64-linux-gnu/13/libstdc++.a(globals_io.o)
(.text._ZNSt8ios_base4InitC2Ev+0xf4): relocation truncated to fit: R_X86_64_PC32 against symbol `__gnu_internal::buf_cin_sync' defined in .bss._ZN14__gnu_internal12buf_cin_syncE section in /usr/lib/gcc/x86_64-linux-gnu/13/libstdc++.a(globals_io.o)
(.text._ZNSt8ios_base4InitC2Ev+0xfb): relocation truncated to fit: R_X86_64_PC32 against symbol `__gnu_internal::buf_cout_sync' defined in .bss._ZN14__gnu_internal13buf_cout_syncE section in /usr/lib/gcc/x86_64-linux-gnu/13/libstdc++.a(globals_io.o)
(.text._ZNSt8ios_base4InitC2Ev+0x101): additional relocation overflows omitted from the output
(.text._ZNSt8ios_base4InitC2Ev+0x1ed): failed to convert GOTPCREL relocation against '_ZSt4cout'; relink with --no-relax
(.text._ZNSt8ios_base4InitC2Ev+0x252): failed to convert GOTPCREL relocation against '_ZSt3cin'; relink with --no-relax
(.text._ZNSt8ios_base4InitC2Ev+0x2bc): failed to convert GOTPCREL relocation against '_ZSt4cerr'; relink with --no-relax
(.text._ZNSt8ios_base4InitC2Ev+0x316): failed to convert GOTPCREL relocation against '_ZSt4clog'; relink with --no-relax
(.text._ZNSt8ios_base4InitC2Ev+0x50f): failed to convert GOTPCREL relocation against '_ZSt5wcout'; relink with --no-relax
(.text._ZNSt8ios_base4InitC2Ev+0x57d): failed to convert GOTPCREL relocation against '_ZSt4wcin'; relink with --no-relax
(.text._ZNSt8ios_base4InitC2Ev+0x5f0): failed to convert GOTPCREL relocation against '_ZSt5wcerr'; relink with --no-relax
(.text._ZNSt8ios_base4InitC2Ev+0x654): failed to convert GOTPCREL relocation against '_ZSt5wclog'; relink with --no-relax
/usr/bin/ld: final link failed
collect2: error: ld returned 1 exit status