結果
問題 |
No.2530 Yellow Cards
|
ユーザー |
👑 ![]() |
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); }