#include #include #include #include using namespace std;int a[3010];int b[120];int vis[120];typedef pair P;P m[3010];int main(){ #ifdef xxz freopen("in.txt","r",stdin); #endif // [xxz int n; cin>>n; for(int i = 0; i >a[i]; int sum = 0,ans = 0; int i,j; for(i = 0; i a[j]) { x = a[j]; y = j; } } if(y != i) { m[sum].first = i; m[sum++].second = y; swap(a[i],a[y]); ans++; } } cout
B. BerSU Ball
time limit per test
1 second
memory limit per test
256 megabytes
input
standard input
output
standard output
The Berland State University is hosting a ballroom dance in celebration of its 100500-th anniversary! n boys and m girls are already busy rehearsing waltz, minuet, polonaise and quadrille moves.
We know that several boy&girl pairs are going to be invited to the ball. However, the partners' dancing skill in each pair must differ by at most one.
For each boy, we know his dancing skills. Similarly, for each girl we know her dancing skills. Write a code that can determine the largest possible number of pairs that can be formed from n boys and m girls.
Input
The first line contains an integer n (1?≤?n?≤?100) ? the number of boys. The second line contains sequence a1,?a2,?...,?an (1?≤?ai?≤?100), where ai is the i-th boy's dancing skill.
Similarly, the third line contains an integer m (1?≤?m?≤?100) ? the number of girls. The fourth line contains sequence b1,?b2,?...,?bm (1?≤?bj?≤?100), where bj is the j-th girl's dancing skill.
Output
Print a single number ? the required maximum possible number of pairs.
Sample test(s)
input
41 4 6 255 1 5 7 9
output
input
41 2 3 4410 11 12 13
output
input
51 1 1 1 131 2 3
output
#include #include #include #include using namespace std;int a[120];int b[120];int vis[120];int main(){ #ifdef xxz freopen("in.txt","r",stdin); #endif // [xxz int n,m; cin>>n; for(int i = 0; i >a[i]; sort(a,a+n); cin>>m; for(int i = 0; i >b[i],vis[i] = 0; sort(b,b+m); int sum = 0; int j; for(int i =0; i
C. Given Length and Sum of Digits...
time limit per test
1 second
memory limit per test
256 megabytes
input
standard input
output
standard output
You have a positive integer m and a non-negative integer s. Your task is to find the smallest and the largest of the numbers that have length m and sum of digits s. The required numbers should be non-negative integers written in the decimal base without leading zeroes.
Input
The single line of the input contains a pair of integers m, s (1?≤?m?≤?100,?0?≤?s?≤?900) ? the length and the sum of the digits of the required numbers.
Output
In the output print the pair of the required non-negative integer numbers ? first the minimum possible number, then ? the maximum possible number. If no numbers satisfying conditions required exist, print the pair of numbers "-1 -1" (without the quotes).
Sample test(s)
input
2 15
output
69 96
input
3 0
output
-1 -1
#include #include #include using namespace std;bool can(int m, int s){ if(s >= 0 && 9*m >= s) return true; else return false;}int main(){ int m,s; cin>>m>>s; if(!can(m,s)) { cout = 10) { cout 0 || (j == 0 && i > 1) ) && can(m - i, sum - j)) { minn += char('0' + j); sum -= j; break; } } sum = s; for(int i = 1; i = 0; j--) { if(can(m - i, sum - j)) { maxn += char('0' + j); sum -= j; break; } } cout
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