제출 #792203

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
792203	2023-07-24 17:30:01	cig32	Dijamant (COCI22_dijamant)	C++17	70 / 70	388 ms	116572 KiB

Main

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#include "bits/stdc++.h"
using namespace std;
const int MAXN = 4e6 + 10;
const int MOD = 1e9 + 7;
#define int int
mt19937_64 rng((int)std::chrono::steady_clock::now().time_since_epoch().count());
int rnd(int x, int y) {
  int u = uniform_int_distribution<int>(x, y)(rng); return u;
}
int bm(int b, int p) { // bigmod
    if(p==0) return 1;
    int r = bm(b, p/2);
    if(p&1) return (((r*r) % MOD) * b) % MOD;
    return (r*r) % MOD;
}
int inv(int b) { // modinv
    return bm(b, MOD-2);
}
int f[MAXN];
int nCr(int n, int r) { // nCr main function, requires precomputation function
    int ans = f[n]; ans *= inv(f[r]); ans %= MOD;
    ans *= inv(f[n-r]); ans %= MOD; return ans;
}
void precomp() { // factorials for nCr, function MUST BE CALLED
    f[0] = 1;
    for(int i=1; i<MAXN; i++) f[i] = (f[i-1] * i) % MOD;
}
int dsu[MAXN];
int set_of(int u) {
  if(dsu[u] == u) return u;
 
 
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컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'void solve(int)':
Main.cpp:93:19: warning: 'len' may be used uninitialized in this function [-Wmaybe-uninitialized]
   93 |                   if(minus[i + len][j] - minus[i][j - len] == len) {
      |                   ^~

• Subtask 1: 20 / 20
• Subtask 2: 50 / 50