Submission #22094

#TimeUsernameProblemLanguageResultExecution timeMemory
22094sgc109 (#42)다항식 계산 (KRIII5P_2)C++98
7 / 7
416 ms17700 KiB
#include <bits/stdc++.h> #define REP(i,a,b) for(int i=a;i<=b;++i) #define FOR(i,n) for(int i=0;i<n;++i) #define pb push_back #define all(v) (v).begin(),(v).end() #define sz(v) ((int)(v).size()) #define inp1(a) scanf("%d",&a) #define inp2(a,b) scanf("%d%d",&a,&b) #define inp3(a,b,c) scanf("%d%d%d",&a,&b,&c) #define inp4(a,b,c,d) scanf("%d%d%d%d",&a,&b,&c,&d) #define inp5(a,b,c,d,e) scanf("%d%d%d%d%d",&a,&b,&c,&d,&e) #define fastio() ios_base::sync_with_stdio(false),cin.tie(NULL) using namespace std; typedef long long ll; typedef pair<ll,ll> pll; typedef vector<int> vi; typedef vector<ll> vl; typedef pair<int,int> pii; typedef vector<pii> vii; typedef vector<pll> vll; typedef vector<vector<int> > vvi; typedef pair<int,pair<int,int> > piii; typedef vector<piii> viii; const double EPSILON = 1e-9; const double PI = acos(-1); const int MOD = 1e9+7; const int INF = 0x3c3c3c3c; const long long INFL = 0x3c3c3c3c3c3c3c3c; const int MAX_N = 102; int N,P; ll modP[1003][1003]; // [밑][지수] ll A[1000003]; ll sum[1003]; ll go(int x, int n){ if(!x) return 0; if(n==0) return 1; if(n%2){ ll tmp = go(x,(n-1)/2); return (x*tmp*tmp)%P; } ll tmp = go(x,n/2); return (tmp*tmp)%P; } int main() { inp2(N,P); FOR(i,N+1) scanf("%lld",A+i); if(P==1){ printf("%lld",A[N]); return 0; } FOR(i,N+1) sum[i%(P-1)] += A[N-i]; sum[0] -= A[N]; FOR(i,P){ FOR(j,P){ modP[i][j] = go(i, j); } } FOR(i,P){ ll ans = 0; FOR(j,P){ ans = (ans + modP[i][j] * sum[j]) % P; } printf("%lld\n",(ans+A[N])%P); } return 0; }

Compilation message (stderr)

pc.cpp: In function 'int main()':
pc.cpp:47:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  inp2(N,P);
           ^
pc.cpp:48:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  FOR(i,N+1) scanf("%lld",A+i);
                              ^
pc.cpp: At global scope:
pc.cpp:25:14: warning: 'PI' defined but not used [-Wunused-variable]
 const double PI = acos(-1);
              ^
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