제출 #89464

#제출 시각아이디문제언어결과실행 시간메모리
89464updown1Sailing Race (CEOI12_race)C++17
40 / 100
279 ms9844 KiB
/* dp[node 1][node 2][0/1] = max edges in the range starting at node 1/2 (based on the third dimension) */ #include <bits/stdc++.h> using namespace std; typedef long long ll; #define For(i, a, b) for(int i=a; i<b; i++) #define ffi For(i, 0, N) #define ffj For(j, 0, N) #define ffa ffi ffj #define s <<" "<< #define c <<" : "<< #define w cout #define e endl//"\n" #define pb push_back #define mp make_pair #define a first #define b second #define int ll const int MAXN=500, INF=1000000000000000000; ///500,000,000 int N, K, dp[MAXN][MAXN][2], out, loc; vector<int> adj[MAXN]; bool in (int x, int y, int z) { if (y < z) return y < x && x < z; return x > y || x < z; } int solve(int n1, int n2, int at) { if (dp[n1][n2][at] != -1) return dp[n1][n2][at]; dp[n1][n2][at] = 0; //w<< n1 s n2 s at<<e; /// range is n1+1 to n2-1 (n1+1)%N to (n2-1+N)%N if ((n1+1)%N == n2) {dp[n1][n2][at] = 0; return dp[n1][n2][at];} if (at == 0) { /// at n1 for (int i: adj[n1]) if (in(i, n1, n2)) { dp[n1][n2][0] = max(dp[n1][n2][0], max(solve(n1, i, 1), solve(i, n2, 0))+1); } return dp[n1][n2][0]; } /// at n2 for (int i: adj[n2]) if (in(i, n1, n2)) { dp[n1][n2][1] = max(dp[n1][n2][1], max(solve(i, n2, 0), solve(n1, i, 1))+1); } return dp[n1][n2][1]; } main() { //ifstream cin("test.in"); ios_base::sync_with_stdio(0); cin.tie(0); cin >> N >> K; ffi {int a; cin >> a; while (a != 0) {adj[i].pb(a-1); cin >> a;}} ffa dp[i][j][0] = dp[i][j][1] = -1; ffi solve(i, i, 0); if (K == 0) ffi{ if (dp[i][i][0] > out) {out = dp[i][i][0]; loc = i+1;} } else { assert(false); } //ffa w<< i+1 s j+1 c solve(i, j, 0) s solve(i, j, 1)<<e; w<< out s loc<<e; }

컴파일 시 표준 에러 (stderr) 메시지

race.cpp:50:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
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