結果
| 問題 |
No.2530 Yellow Cards
|
| コンテスト | |
| ユーザー |
👑 potato167
|
| 提出日時 | 2023-11-03 23:27:37 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
RE
|
| 実行時間 | - |
| コード長 | 442 bytes |
| コンパイル時間 | 363 ms |
| コンパイル使用メモリ | 28,160 KB |
| 最終ジャッジ日時 | 2025-02-17 18:55:42 |
|
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | RE * 4 |
| other | RE * 17 |
コンパイルメッセージ
main.cpp: In function ‘int main()’:
main.cpp:21:13: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘int’ [-Wformat=]
21 | scanf("%d%d",N,K);
| ~^ ~
| | |
| int* int
main.cpp:21:15: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘int’ [-Wformat=]
21 | scanf("%d%d",N,K);
| ~^ ~
| | |
| int* int
main.cpp:22:14: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘ll’ {aka ‘long long int’} [-Wformat=]
22 | printf("%d\n",(3*N+2*K+my_pow(N-2,K)*my_pow(N,mod-K)%mod)*rev%mod);
| ~^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| | |
| int ll {aka long long int}
| %lld
main.cpp:21:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
21 | scanf("%d%d",N,K);
| ~~~~~^~~~~~~~~~~~
main.cpp:21:10: warning: ‘N’ is used uninitialized [-Wuninitialized]
21 | scanf("%d%d",N,K);
| ~~~~~^~~~~~~~~~~~
main.cpp:20:9: note: ‘N’ was declared here
20 | int N,K;
| ^
main.cpp:21:10: warning: ‘K’ is used uninitialized [-Wuninitialized]
21 | scanf("%d%d",N,K);
| ~~~~~^~~~~~~~~~~~
main.cpp:20:11: note: ‘K’ was declared here
20 | int N,K;
| ^
ソースコード
#include<stdio.h>
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
using namespace std;
using ll=long long;
const int mod=998244353;
const int rev=(3ll*mod+1)/4;
ll my_pow(ll a,ll b){
ll res=1;
while(b){
if(b&1) res=res*a%mod;
a=a*a%mod;
b>>=1;
}
return res;
}
int main(){
int N,K;
scanf("%d%d",N,K);
printf("%d\n",(3*N+2*K+my_pow(N-2,K)*my_pow(N,mod-K)%mod)*rev%mod);
}
potato167