Submission #856364

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
856364	2023-10-03 09:13:56	Cyanmond	Palindromic Partitions (CEOI17_palindromic)	C++17	Compilation error	0 ms	0 KiB

palindromic

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#include <bits/stdc++.h>
using namespace std;
#define rep(i, l, r) for (int i = (l); i < (r); ++i)
#define per(i, l, r) for (int i = (r - 1); i >= l; --i)
#define ALL(x) (x).begin(), (x).end()
using i64 = long long;
using u64 = unsigned long long;
constexpr u64 mod = (1ull << 61) - 1;
constexpr u64 base = 2;
u64 safeMod(__uint128_t v) {
    while (v < 0) v += mod;
    return v % mod;
}
struct SH {
    static constexpr u64 mul(u64 a, u64 b) {
        __uint128_t x = (__uint128_t)(a) * (__uint128_t)(b);
        return safeMod(x % (__uint128_t)mod);
    }
    int n;
    string S;
    vector<u64> hash;
    SH(string s) : S(s) {
 
 
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Compilation message (stderr)

palindromic.cpp: In static member function 'static constexpr u64 SH::mul(u64, u64)':
palindromic.cpp:23:23: error: call to non-'constexpr' function 'u64 safeMod(__int128 unsigned)'
   23 |         return safeMod(x % (__uint128_t)mod);
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
palindromic.cpp:15:5: note: 'u64 safeMod(__int128 unsigned)' declared here
   15 | u64 safeMod(__uint128_t v) {
      |     ^~~~~~~