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Submission #156447

# Submission time Handle Problem Language Result Execution time Memory
156447 2019-10-05T16:52:53 Z liwi Tower Defense (CEOI19_towerdefense) C++11
100 / 100
 5 ms 424 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;
typedef tree<int, null_type, less<int>, rb_tree_tag,tree_order_statistics_node_update> ordered_set;

#define scan(x) do{while((x=getchar())<'0'); for(x-='0'; '0'<=(_=getchar()); x=(x<<3)+(x<<1)+_-'0');}while(0)
char _;
#define complete_unique(a) a.erase(unique(a.begin(),a.end()),a.end())
#define all(a) a.begin(),a.end()
#define println printf("\n");
#define readln(x) getline(cin,x);
#define pb push_back
#define endl "\n"
#define INT_INF 0x3f3f3f3f
#define LL_INF 0x3f3f3f3f3f3f3f3f
#define MOD 1000000007
#define MOD2 1494318097
#define SEED 131
#define mp make_pair
#define fastio cin.tie(0); cin.sync_with_stdio(0);

typedef unsigned long long ull;
typedef long long ll;
typedef long double ld;
typedef unordered_map<int,int> umii;
typedef pair<int,int> pii;
typedef pair<double,double> pdd;
typedef pair<ll,ll> pll;
typedef pair<int,pii> triple;
typedef int8_t byte;

mt19937 g1(time(0));

int randint(int a, int b){return uniform_int_distribution<int>(a, b)(g1);}
ll randlong(ll a,ll b){return uniform_int_distribution<long long>(a, b)(g1);}

ll gcd(ll a, ll b){return b == 0 ? a : gcd(b, a % b);}
ll lcm(ll a, ll b){return a*b/gcd(a,b);}
ll fpow(ll  b, ll exp, ll mod){if(exp == 0) return 1;ll t = fpow(b,exp/2,mod);if(exp&1) return t*t%mod*b%mod;return t*t%mod;}
ll divmod(ll i, ll j, ll mod){i%=mod,j%=mod;return i*fpow(j,mod-2,mod)%mod;}

int sx,sy,tx,ty,d;
vector<pii> res;

int main(){
	scanf("%d %d %d %d %d",&sx,&sy,&tx,&ty,&d);
	if(abs(sx-tx)+abs(sy-ty) > d) return 0*printf("impossible\n");
	if((abs(sx-tx)+abs(sy-ty))%2 != d%2) return 0*printf("impossible\n");
	int rem = d-abs(sx-tx)-abs(sy-ty);
	if(rem > 10000) return 0*printf("impossible\n");
	if(abs(sx-tx)+abs(sy-ty) == 1){
		if(d != 1) return 0*printf("impossible\n");
		return 0*printf("0\n");
	}else if(abs(sx-tx) == 1 && abs(sy-ty) == 1){
		if(d == 4) return 0*printf("impossible\n");
		rem-=2;
	}
	if(sx == tx){
		for(int i=0; i<rem/2; i++){
			res.pb(mp(sx-i,sy+(sy>ty?-1:1)));
			if(i) res.pb(mp(sx+i,sy+(sy>ty?-1:1)));
		}
	}else if(sy == ty){
		for(int i=0; i<rem/2; i++){
			res.pb(mp(sx+(sx>tx?-1:1),sy-i));
			if(i) res.pb(mp(sx+(sx>tx?-1:1),sy+i));
		}
	}else if(sy < ty){
		if(sx < tx){
			for(int i=0; i<rem/2; i++){
				res.pb(mp(sx-i,sy+1));
				res.pb(mp(sx+1,sy-i));
			}
		}else{
			for(int i=0; i<rem/2; i++){
				res.pb(mp(sx-1,sy-i));
				res.pb(mp(sx+i,sy+1));
			}
		}
	}else{
		if(sx < tx){
			for(int i=0; i<rem/2; i++){
				res.pb(mp(sx-i,sy-1));
				res.pb(mp(sx+1,sy+i));
			}
		}else{
			for(int i=0; i<rem/2; i++){
				res.pb(mp(sx-1,sy+i));
				res.pb(mp(sx+i,sy-1));
			}
		}
	}
	printf("%d\n",(int)res.size());
	for(pii check:res)
		printf("%d %d\n",check.first,check.second);
}
/*
2 0
0 1
5
 */

Compilation message

towerdefense.cpp: In function 'int main()':
towerdefense.cpp:49:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d %d %d %d",&sx,&sy,&tx,&ty,&d);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct

Subtask #2
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 252 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 256 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 256 KB Output is correct
20 Correct 2 ms 256 KB Output is correct
21 Correct 2 ms 256 KB Output is correct
22 Correct 2 ms 256 KB Output is correct
23 Correct 2 ms 256 KB Output is correct
24 Correct 2 ms 256 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 256 KB Output is correct
27 Correct 2 ms 256 KB Output is correct
28 Correct 2 ms 256 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 380 KB Output is correct

Subtask #3
47.0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 252 KB Output is correct
16 Correct 2 ms 256 KB Output is correct
17 Correct 2 ms 256 KB Output is correct
18 Correct 2 ms 256 KB Output is correct
19 Correct 2 ms 256 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 256 KB Output is correct
22 Correct 2 ms 256 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 256 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 256 KB Output is correct
27 Correct 2 ms 256 KB Output is correct
28 Correct 2 ms 256 KB Output is correct
29 Correct 2 ms 256 KB Output is correct
30 Correct 2 ms 256 KB Output is correct
31 Correct 2 ms 256 KB Output is correct
32 Correct 2 ms 376 KB Output is correct
33 Correct 2 ms 256 KB Output is correct
34 Correct 2 ms 256 KB Output is correct
35 Correct 2 ms 256 KB Output is correct
36 Correct 2 ms 376 KB Output is correct
37 Correct 2 ms 380 KB Output is correct
38 Correct 2 ms 256 KB Output is correct
39 Correct 2 ms 376 KB Output is correct
40 Correct 2 ms 376 KB Output is correct
41 Correct 2 ms 252 KB Output is correct
42 Correct 2 ms 376 KB Output is correct
43 Correct 2 ms 256 KB Output is correct
44 Correct 2 ms 256 KB Output is correct
45 Correct 2 ms 256 KB Output is correct
46 Correct 2 ms 256 KB Output is correct
47 Correct 2 ms 256 KB Output is correct
48 Correct 2 ms 376 KB Output is correct
49 Correct 2 ms 256 KB Output is correct
50 Correct 2 ms 376 KB Output is correct
51 Correct 2 ms 376 KB Output is correct
52 Correct 2 ms 376 KB Output is correct
53 Correct 2 ms 376 KB Output is correct
54 Correct 2 ms 376 KB Output is correct
55 Correct 2 ms 256 KB Output is correct
56 Correct 2 ms 256 KB Output is correct
57 Correct 2 ms 376 KB Output is correct
58 Correct 2 ms 252 KB Output is correct
59 Correct 2 ms 256 KB Output is correct
60 Correct 2 ms 376 KB Output is correct
61 Correct 2 ms 252 KB Output is correct
62 Correct 2 ms 376 KB Output is correct
63 Correct 2 ms 256 KB Output is correct
64 Correct 2 ms 256 KB Output is correct
65 Correct 2 ms 256 KB Output is correct
66 Correct 2 ms 376 KB Output is correct
67 Correct 2 ms 424 KB Output is correct
68 Correct 2 ms 256 KB Output is correct
69 Correct 2 ms 256 KB Output is correct
70 Correct 2 ms 256 KB Output is correct
71 Correct 2 ms 376 KB Output is correct
72 Correct 2 ms 376 KB Output is correct
73 Correct 2 ms 376 KB Output is correct
74 Correct 2 ms 376 KB Output is correct
75 Correct 2 ms 256 KB Output is correct
76 Correct 3 ms 376 KB Output is correct
77 Correct 2 ms 376 KB Output is correct
78 Correct 2 ms 376 KB Output is correct
79 Correct 2 ms 376 KB Output is correct
80 Correct 2 ms 256 KB Output is correct
81 Correct 5 ms 376 KB Output is correct
82 Correct 2 ms 376 KB Output is correct
83 Correct 2 ms 376 KB Output is correct
84 Correct 2 ms 376 KB Output is correct
85 Correct 2 ms 256 KB Output is correct
86 Correct 2 ms 376 KB Output is correct
87 Correct 2 ms 376 KB Output is correct
88 Correct 2 ms 376 KB Output is correct
89 Correct 2 ms 376 KB Output is correct
90 Correct 2 ms 376 KB Output is correct
91 Correct 2 ms 376 KB Output is correct
92 Correct 2 ms 376 KB Output is correct
93 Correct 2 ms 376 KB Output is correct
94 Correct 2 ms 376 KB Output is correct
95 Correct 2 ms 376 KB Output is correct
96 Correct 2 ms 376 KB Output is correct
97 Correct 2 ms 376 KB Output is correct
98 Correct 2 ms 256 KB Output is correct
99 Correct 2 ms 256 KB Output is correct
100 Correct 2 ms 376 KB Output is correct
101 Correct 2 ms 376 KB Output is correct
102 Correct 2 ms 256 KB Output is correct
103 Correct 2 ms 376 KB Output is correct
104 Correct 2 ms 380 KB Output is correct
105 Correct 2 ms 376 KB Output is correct
106 Correct 2 ms 376 KB Output is correct
107 Correct 2 ms 376 KB Output is correct
108 Correct 2 ms 256 KB Output is correct
109 Correct 3 ms 256 KB Output is correct
110 Correct 2 ms 256 KB Output is correct
111 Correct 2 ms 376 KB Output is correct
112 Correct 2 ms 256 KB Output is correct
113 Correct 2 ms 256 KB Output is correct
114 Correct 2 ms 256 KB Output is correct
115 Correct 2 ms 376 KB Output is correct
116 Correct 2 ms 252 KB Output is correct
117 Correct 2 ms 376 KB Output is correct
118 Correct 2 ms 256 KB Output is correct
119 Correct 2 ms 256 KB Output is correct
120 Correct 2 ms 256 KB Output is correct
121 Correct 2 ms 256 KB Output is correct
122 Correct 2 ms 256 KB Output is correct
123 Correct 2 ms 348 KB Output is correct
124 Correct 2 ms 256 KB Output is correct
125 Correct 2 ms 256 KB Output is correct
126 Correct 2 ms 256 KB Output is correct
127 Correct 2 ms 256 KB Output is correct
128 Correct 2 ms 252 KB Output is correct
129 Correct 2 ms 256 KB Output is correct
130 Correct 2 ms 256 KB Output is correct
131 Correct 2 ms 256 KB Output is correct
132 Correct 2 ms 376 KB Output is correct
133 Correct 2 ms 256 KB Output is correct
134 Correct 2 ms 396 KB Output is correct
135 Correct 2 ms 376 KB Output is correct
136 Correct 2 ms 376 KB Output is correct
137 Correct 2 ms 376 KB Output is correct
138 Correct 2 ms 376 KB Output is correct
139 Correct 2 ms 376 KB Output is correct
140 Correct 2 ms 376 KB Output is correct
141 Correct 2 ms 256 KB Output is correct
142 Correct 2 ms 376 KB Output is correct
143 Correct 2 ms 376 KB Output is correct
144 Correct 2 ms 376 KB Output is correct
145 Correct 2 ms 376 KB Output is correct
146 Correct 2 ms 376 KB Output is correct
147 Correct 2 ms 256 KB Output is correct
148 Correct 2 ms 256 KB Output is correct
149 Correct 2 ms 376 KB Output is correct