Connect Three
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                                Connect Three
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                                https://codeforces.com/contest/1087/problem/C
題解:有點曼哈頓距離的感覺
/* *@Author: STZG *@Language: C++ */ #include <bits/stdc++.h> #include<iostream> #include<algorithm> #include<cstdlib> #include<cstring> #include<cstdio> #include<string> #include<vector> #include<bitset> #include<queue> #include<deque> #include<stack> #include<cmath> #include<list> #include<map> #include<set> //#define DEBUG #define RI register int using namespace std; typedef long long ll; //typedef __int128 lll; const int N=1000+10; const int MOD=1e9+7; const double PI = acos(-1.0); const double EXP = 1E-8; const int INF = 0x3f3f3f3f; int t,n,m,q; set<pair<int, int> > sen; int x_s[3], y_s[3]; int xA, yA, xB, yB, xC, yC; void walk(int xx, int yy, int xt, int yt) {while(xx < xt) {xx++;sen.insert(make_pair(xx, yy));}while(xx > xt) {xx--;sen.insert(make_pair(xx, yy));}while(yy < yt) {yy++;sen.insert(make_pair(xx, yy));}while(yy > yt) {yy--;sen.insert(make_pair(xx, yy));} } int main() { #ifdef DEBUGfreopen("input.in", "r", stdin);//freopen("output.out", "w", stdout); #endif//scanf("%d",&n);scanf("%d%d%d%d%d%d", x_s, y_s, x_s+1, y_s+1, x_s+2, y_s+2);xA = x_s[0];yA = y_s[0];xB = x_s[1];yB = y_s[1];xC = x_s[2];yC = y_s[2];for(int i = 0; i < 3; i++) {sen.insert(make_pair(x_s[i], y_s[i]));}sort(x_s, x_s+3);sort(y_s, y_s+3);walk(xA, yA, x_s[1], y_s[1]);walk(xB, yB, x_s[1], y_s[1]);walk(xC, yC, x_s[1], y_s[1]);printf("%d\n", (int)sen.size());for(pair<int, int> p : sen) {printf("%d %d\n", p.first, p.second);}//cout << "Hello world!" << endl;return 0; }?
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