| Problem A | Welcome | 水题 |
| Problem B | 绿地装饰 | 模拟 |
| Problem C | 击鼓传花 | 水题 |
| Problem D | 旅行 | |
| Problem E | 解密 | 水题 |
| Problem F | 巍巍岳麓 | 最小生成树 |
| Problem G | Solution Sets | 深搜 |
| Problem H | 百舸争流 | 贪心 |
| Problem I | 最长不下降子序列 | 树状数组 |
| Problem J | Mode | 水题 |
| Problem K | Matrix | 规律 |
| Problem L | 药剂 | 树状数组 |
1 #include <bits/stdc++.h> 2 using namespace std; 3 int w; 4 void print1() { 5 for (int i = 1; i <= w; i++) printf("."); 6 } 7 void print2() { 8 printf("o...o"); print1(); printf("o...o"); print1(); printf("o...o"); print1(); printf("ooooo"); print1(); printf("o...o\n"); 9 printf("o...o"); print1(); printf("oo..o"); print1(); printf("o...o"); print1(); printf("o...."); print1(); printf("oo.oo\n"); 10 printf("ooooo"); print1(); printf("o.o.o"); print1(); printf("o...o"); print1(); printf("o...."); print1(); printf("o.o.o\n"); 11 printf("o...o"); print1(); printf("o..oo"); print1(); printf("o...o"); print1(); printf("o...."); print1(); printf("o...o\n"); 12 printf("o...o"); print1(); printf("o...o"); print1(); printf("ooooo"); print1(); printf("ooooo"); print1(); printf("o...o\n"); 13 } 14 int main() { 15 cin >> w; 16 print2(); 17 return 0; 18 }
1 #include <bits/stdc++.h> 2 using namespace std; 3 const int maxn = 1005; 4 string ans[maxn], mat[maxn], mat1[5], mat2[5]; 5 int n, k; 6 void green(int cur) { 7 for (int i = 0; i < pow(n,cur-1); i++) { 8 mat[i] = ans[i]; 9 ans[i].clear(); 10 } 11 12 for (int i = 0, now = 0; i < pow(n,cur-1); i++, now += n) { 13 for (int j = 0; j < mat[i].size(); j++) { 14 if (mat[i][j] == '.') { 15 ans[now] += mat1[0]; 16 ans[now+1] += mat1[1]; 17 ans[now+2] += mat1[2]; 18 } 19 else { 20 ans[now] += mat2[0]; 21 ans[now+1] += mat2[1]; 22 ans[now+2] += mat2[2]; 23 } 24 } 25 } 26 } 27 void print() { 28 for (int i = 0; i < pow(n,k); i++) 29 cout << ans[i] << endl; 30 } 31 int main() { 32 //freopen("input.txt", "r", stdin); 33 //freopen("output.txt", "w", stdout); 34 cin >> n >> k; 35 for (int i = 0; i < n; i++) cin >> mat1[i]; 36 for (int i = 0; i < n; i++) mat2[i] = (n==2) ? "**" : "***"; 37 ans[0] = '.'; 38 for (int i = 1; i <= k; i++) green(i); 39 print(); 40 return 0; 41 }
1 #include <bits/stdc++.h> 2 using namespace std; 3 typedef long long ll; 4 int main() { 5 int n; 6 while (cin >> n) { 7 ll ans = 0; 8 for (int i = 1; i <= n; i++) { 9 int a; scanf("%d",&a); 10 ans += a; 11 } 12 printf("%lld\n",ans); 13 } 14 return 0; 15 }
1 #include <bits/stdc++.h> 2 using namespace std; 3 int main() { 4 string s; cin >> s; 5 string ans; 6 for (int i = 0; i < s.size(); i++) { 7 ans += s[i]; 8 if ((i+1)%8 == 0) { 9 for (int j = ans.size()-1; j >= 0; j--) 10 cout << ans[j]; 11 ans.clear(); 12 } 13 } 14 for (int j = ans.size()-1; j >= 0; j--) 15 cout << ans[j]; 16 cout << endl; 17 return 0; 18 }
1 #include <bits/stdc++.h> 2 using namespace std; 3 const int maxn = 3005, inf = 0x3f3f3f3f; 4 struct edge { 5 int u, v, w; 6 edge() {} 7 edge(int u, int v, int w) : u(u), v(v), w(w) {} 8 }eds[4005]; 9 10 int n, m, s, t, st, sum, mx, ans = inf; 11 int p[maxn]; 12 bool cmp(edge a, edge b) { return a.w < b.w; } 13 int find(int x) { return p[x] == x ? x : p[x] = find(p[x]); } 14 void Kruskal() { 15 sort(eds+1, eds+1+m, cmp); 16 for (int i = 1; i <= m; i++) { 17 if ((s == eds[i].u && t == eds[i].v) || (t == eds[i].u && s == eds[i].v)) { 18 st = eds[i].w; 19 break; 20 } 21 } 22 23 for (int i = 1; i <= m-n+2; i++) { 24 for (int j = 1; j <= n; j++) p[j] = j; 25 p[s] = t, mx = st, sum = 1; 26 for (int j = i; j <= m; j++) { 27 int x = find(eds[j].u); int y = find(eds[j].v); 28 if (x != y) { mx = max(mx, eds[j].w); p[x] = y; sum++; } 29 if (sum == n-1) { 30 ans = min(ans,mx); 31 break; 32 } 33 } 34 } 35 } 36 int main() { 37 scanf("%d%d",&n,&m); 38 for (int i = 1; i <= m; i++) { 39 scanf("%d%d%d",&eds[i].u,&eds[i].v,&eds[i].w); 40 } 41 scanf("%d%d",&s,&t); Kruskal(); 42 printf("%d %d\n",n-1,ans); 43 return 0; 44 }
1 #include <bits/stdc++.h> 2 using namespace std; 3 typedef long long ll; 4 int n, m, ans = 0; 5 const ll mx = 1e15; 6 void dfs(int cur, int last, ll b, ll a) { 7 if (b*last+(n-cur+1)*a < a*last) return; 8 if (b*m+(n-cur)*last >= a*m) return; 9 if (cur == n) { 10 if (a % (a-b) == 0) ans++; 11 return; 12 } 13 if (b > mx) { 14 ll k = __gcd(a,b); 15 a /= k, b /= k; 16 } 17 for (int i = last; i <= m; i++) 18 dfs(cur+1,i,b*i+a,a*i); 19 } 20 int main() { 21 scanf("%d%d",&n,&m); 22 dfs(1,1,0,1); 23 printf("%d\n",ans); 24 return 0; 25 }
1 #include <bits/stdc++.h> 2 using namespace std; 3 const int maxn = 100005; 4 struct py { 5 string name; 6 int a; 7 }pys[maxn]; 8 int b[maxn]; 9 bool cmp(py x, py y) { 10 if (x.a == y.a) return x.name < y.name; 11 return x.a > y.a; 12 } 13 bool cmp1(int x, int y) { return x > y; } 14 int main() { 15 //freopen("input.txt", "r", stdin); 16 int n; cin >> n; 17 for (int i = 1; i <= n; i++) 18 cin >> pys[i].name >> pys[i].a; 19 //sort(pys+1,pys+1+n,cmp); 20 int m; cin >> m; 21 for (int i = 1; i <= m; i++) 22 cin >> b[i]; 23 sort(b+1,b+1+m,cmp1); 24 25 string name; cin >> name; 26 int now_r, now_s; 27 // 成绩最好 28 for (int i = 1; i <= n; i++) { 29 if (pys[i].name == name) { 30 pys[i].a += b[1]; 31 break; 32 } 33 } 34 sort(pys+1,pys+1+n,cmp); 35 for (int i = 1; i <= n; i++) { 36 if (pys[i].name == name) { 37 now_r = i; 38 now_s = pys[i].a; 39 break; 40 } 41 } 42 for (int i = n, pos = now_r+1; i >= now_r+1 && pos <= n; i--, pos++) { 43 if (now_s < pys[i].a+b[pos] || (pys[i].a+b[pos] == now_s && name > pys[i].name)) { 44 now_r++, i++; 45 } 46 } 47 cout << now_r; 48 // 成绩最差 49 for (int i = 1; i <= n; i++) { 50 if (pys[i].name == name) { 51 pys[i].a -= b[1]; 52 pys[i].a += b[n]; 53 break; 54 } 55 } 56 sort(pys+1,pys+1+n,cmp); 57 for (int i = 1; i <= n; i++) { 58 if (pys[i].name == name) { 59 now_r = i; 60 now_s = pys[i].a; 61 break; 62 } 63 } 64 for (int i = now_r+1, pos = n-now_r; i <= n && pos >= 1; i++, pos--) { 65 if (now_s < pys[i].a+b[pos] || (pys[i].a+b[pos] == now_s && name > pys[i].name)) { 66 now_r++; 67 } 68 else { 69 i--; 70 } 71 } 72 cout << " " << now_r << endl; 73 return 0; 74 }
1 #include <bits/stdc++.h> 2 using namespace std; 3 typedef long long ll; 4 const int maxn = 100005; 5 int n, l, ans = 0, cnt = 0; 6 struct A { 7 int val, id; 8 }a[maxn]; 9 int b[2][maxn], c[2][maxn], id[maxn]; 10 bool cmp (A x, A y) { return x.val < y.val; } 11 int lowbit(int x) { return x&(-x); } 12 void add(int k, int x, int d) { 13 while (x <= cnt) { 14 c[k][x] = max(c[k][x],d); 15 x += lowbit(x); 16 } 17 } 18 int sum(int k, int x) { 19 int ret = 0; 20 while (x > 0) { 21 ret = max(c[k][x], ret); 22 x -= lowbit(x); 23 } 24 return ret; 25 } 26 int main() { 27 scanf("%d%d",&n,&l); 28 for (int i = 1 ; i <= n; i++) 29 scanf("%d",&a[i].val), a[i].id = i; 30 sort(a+1,a+1+n,cmp); 31 for (int i = 1; i <= n; i++) { 32 if (a[i].val == a[i-1].val) id[a[i].id] = cnt; 33 else id[a[i].id] = ++cnt; 34 } 35 36 for (int i = 1; i <= n; i++) { 37 b[0][i] = sum(0,id[i])+1; 38 add(0,id[i],b[0][i]); 39 if (i > l) { 40 b[1][i] = sum(1,id[i])+1; 41 add(1,id[i],b[1][i]); 42 add(1,id[i-l],b[0][i-l]); 43 } 44 ans = max(ans,b[1][i]); 45 } 46 for (int i = 1; i <= n-l; i++) 47 ans = max(ans,b[0][i]); 48 printf("%d\n",ans); 49 return 0; 50 }
1 #include <bits/stdc++.h> 2 using namespace std; 3 const int maxn = 30005; 4 int a[maxn], mx = 0; 5 int main() { 6 memset(a, 0, sizeof(a)); 7 int n; scanf("%d",&n); 8 for (int i = 1; i <= n; i++) { 9 int x; scanf("%d",&x); 10 a[x]++; 11 } 12 for (int i = 1; i <= 30000; i++) 13 mx = max(mx,a[i]); 14 for (int i = 1; i <= 30000; i++) 15 if (a[i] == mx) printf("%d %d\n", i, mx); 16 return 0; 17 }
1 #include <bits/stdc++.h> 2 using namespace std; 3 typedef long long ll; 4 const int maxn = 1000005; 5 ll f[maxn]; 6 int main() { 7 ll n, m; scanf("%lld%lld",&n,&m); 8 n %= m; 9 f[1] = 0; f[2] = 1; 10 for (int i = 3; i <= m; i++) 11 f[i] = (i-1)*(f[i-1]+f[i-2])%m; 12 ll ans = f[n]*f[n]%m; 13 printf("%lld\n",ans); 14 return 0; 15 }
1 #include <bits/stdc++.h> 2 using namespace std; 3 const int maxn = 1010; 4 int C[30][maxn][maxn], ans[30]; 5 string mat[maxn]; 6 int n, m; 7 int lowbit(int y) { 8 return y&(-y); 9 } 10 void add(int ch, int x, int y, int d) { 11 while (y <= m) { 12 C[ch][x][y] += d; y += lowbit(y); 13 } 14 } 15 int sum(int ch, int x, int y) { 16 int ret = 0; 17 while (y > 0) { 18 ret += C[ch][x][y]; y -= lowbit(y); 19 } 20 return ret; 21 } 22 int main() { 23 while (scanf("%d%d",&n,&m) == 2) { 24 memset(C,0,sizeof(C)); 25 for (int i = 1; i <= n; i++) { 26 cin >> mat[i]; mat[i] = "0"+mat[i]; 27 for (int j = 1; j <= m; j++) { 28 add(mat[i][j]-'a',i,j,1); 29 } 30 } 31 int q; scanf("%d",&q); 32 while (q--) { 33 int op; scanf("%d",&op); 34 if (op == 0) { 35 int x, y; scanf("%d%d",&x,&y); getchar(); 36 char z; scanf("%c",&z); 37 add(mat[x][y]-'a',x,y,-1); 38 mat[x][y] = z; 39 add(mat[x][y]-'a',x,y,1); 40 } 41 else { 42 memset(ans,0,sizeof(ans)); 43 int x1, x2, y1, y2; 44 scanf("%d%d%d%d",&x1,&y1,&x2,&y2); 45 for (int i = x1; i <= x2; i++) { 46 for (int ch = 0; ch < 26; ch++) { 47 ans[ch] += sum(ch,i,y2)-sum(ch,i,y1-1); 48 } 49 } 50 printf("%d",ans[0]); 51 for (int i = 1; i < 26; i++) printf(" %d",ans[i]); 52 printf("\n"); 53 } 54 } 55 } 56 return 0; 57 }