제출 #1121265

#제출 시각아이디문제언어결과실행 시간메모리
1121265dwuySprinkler (JOI22_sprinkler)C++14
100 / 100
729 ms63208 KiB
#include <bits/stdc++.h> using namespace std; const int MX = 202020; int n, q, MOD; vector<int> G[MX]; int p[MX], h[MX], f[MX][41]; int add(int a, int b){ return (a += b) + (a >= MOD? -MOD : a<0? MOD : 0); } int mul(int a, int b){ return 1LL * a * b % MOD; } void dfs(int u){ for(int v: G[u]) if(v != p[u]){ p[v] = u; dfs(v); } } int32_t main(){ ios_base::sync_with_stdio(false); cin.tie(0); cin >> n >> MOD; for(int i=1; i<n; i++){ int u, v; cin >> u >> v; G[u].push_back(v); G[v].push_back(u); } for(int i=n+1; i<=n+40; i++){ G[i].push_back(i + 1); } G[n+41].push_back(1); for(int i=1; i<=n; i++) cin >> h[i]; dfs(n + 1); cin >> q; for(int i=0; i<MX; i++) for(int j=0; j<41; j++) f[i][j] = 1; while(q--){ int oper; cin >> oper; if(oper == 1){ int u, d, w; cin >> u >> d >> w; while(d>=0){ f[u][d] = mul(f[u][d], w); if(d && u) f[u][d-1] = mul(f[u][d-1], w); u = p[u]; d--; } } if(oper == 2){ int u; cin >> u; int res = h[u]; for(int i=0; i<=40; i++){ res = mul(res, f[u][i]); u = p[u]; } cout << res << '\n'; } } return 0; }

컴파일 시 표준 에러 (stderr) 메시지

sprinkler.cpp: In function 'int add(int, int)':
sprinkler.cpp:10:15: warning: operation on 'a' may be undefined [-Wsequence-point]
   10 |     return (a += b) + (a >= MOD? -MOD : a<0? MOD : 0);
      |            ~~~^~~~~
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...