The 2016 ACM-ICPC Asia Shenyang Regional Contest
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A. Thickest Burger
大数 × 2 + 小数
#include <cstdio> #include <algorithm> using namespace std; int T; int A,B; int main() { scanf("%d",&T); for(int t=1; t<=T; t++) { scanf("%d%d",&A,&B); if(A<B) swap(A,B); printf("%d ",A*2+B); } return 0; }
B. Relative atomic mass
C. Recursive sequence
D. Winning an Auction
E. Counting Cliques
爆搜。vector[i] 记录与 i 有边且编号大于 i 的点。
#include <cstdio> #include <cstring> #include <algorithm> #include <vector> using namespace std; const int maxn = 100 + 10; const int maxm = 1000 + 100; int n, m, k; vector<int> v[maxn]; int from[maxm], to[maxm]; int G[maxn][maxn]; int d[maxn], node[maxn]; int tot, ans; void DFS(int x, int start) { if (tot == k) { ++ans; return; } int sz = v[x].size(); for (int i = start; i < sz; i++) { int flag = 0; for (int j = 2; j <= tot; j++) if (!G[ node[j] ][ v[x][i] ]) { flag = 1; break; } if (flag) continue; node[++tot] = v[x][i], DFS(x, i+1), --tot; } } int main() { int t; scanf("%d", &t); for (int ca = 1; ca <= t; ca++) { memset(d, 0, sizeof(d)); for (int i = 1; i <= n; i++) { for (int j = i+1; j <= n; j++) G[i][j] = G[j][i] = 0; v[i].clear(); } scanf("%d%d%d", &n, &m, &k); for (int i = 1; i <= m; i++) { scanf("%d%d", &from[i], &to[i]); d[ from[i] ]++, d[ to[i] ]++; } for (int i = 1; i <= m; i++) if (d[ from[i] ] >= k-1 && d[ to[i] ] >= k-1) { if (from[i] < to[i]) v[ from[i] ].push_back(to[i]); else v[ to[i] ].push_back(from[i]); G[ from[i] ][ to[i] ] = G[ to[i] ][ from[i] ] = 1; } ans = 0; for (int i = 1; i <= n; i++) { tot = 1, node[1] = i; DFS(i, 0); } printf("%d ", ans); } }
F. Similar Rotations
G. Do not pour out
H. Guessing the Dice Roll
I. The Elder
J. Query on a graph
K. New Signal Decomposition
L. A Random Turn Connection Game
M. Subsequence
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