oj.uz

Submission #125534

# Submission time Handle Problem Language Result Execution time Memory
125534 2019-07-05T17:24:07 Z Retro3014 None (JOI16_ho_t4) C++17
100 / 100
 225 ms 17768 KB 
#include <bits/stdc++.h>

#define pb push_back
#define all(v) ((v).begin(), (v).end())
#define sortv(v) sort(all(v))
#define sz(v) ((int)(v).size())
#define uniqv(v) (v).erase(unique(all(v)), (v).end())
#define umax(a, b) (a)=max((a), (b))
#define umin(a, b) (a)=min((a), (b))
#define FOR(i,a,b) for(int i = (a); i <= (b); i++)
#define rep(i,n) FOR(i,1,n)
#define rep0(i,n) FOR(i,0,(int)(n)-1)
#define FI first
#define SE second
#define INF 2000000000
#define INFLL 1000000000000000000LL


using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

int N, K;
string str;
vector<pii> vt;



map<pii, vector<int> > mp; 

vector<pii> mrg;
vector<int> tmp;
vector<pii> mrg2;
vector<pii> mrg3;

ll ans;

void merge(){
	//cout<<"****************"<<endl;
	mrg2.clear();
	for(int i=0; i<tmp.size(); i++){
		mrg2.pb({tmp[i], tmp[i] + K-1});
	//	cout<<tmp[i]<<" "<<tmp[i]+K-1<<endl;
	}
	if(mrg.empty() || mrg2.empty()){
		mrg.clear(); return;
	}
	//cout<<"========="<<endl;
	//for(int i=0; i<mrg.size(); i++){
	//	cout<<mrg[i].first<<" "<<mrg[i].second<<endl;
	//}
	//cout<<"========="<<endl;
	int t1 = mrg[0].first; int t2 = mrg2[0].first;
	int n1 = 0, n2 = 0;
	int i1=0, i2=0;
	int cnt1=0, cnt2=0;
	int now = -INF, prv=-INF;
	while(1){
		//cout<<"n "<<t1<<" "<<t2<<endl;
		if(t1<t2 || (t1==t2 && n1==0)){
			now = max(now, t1);
			if(n1!=1){
				cnt1++;
				t1 = mrg[i1].second;
				n1 = 1;
			}else{
				n1 = 0;
				cnt1--;
				i1++;
				if(i1>=mrg.size()){
					if(prv!=-INF){
						mrg3.pb({prv, now});
					}
					break;
				}
				t1 = mrg[i1].first;
			}
		}else{
			now = max(now, t2);
			if(n2!=1){
				cnt2++;
				while(i2+1<mrg2.size() && mrg2[i2+1].first<=mrg2[i2].second){
					i2++;
				}
				t2 = mrg2[i2].second;
				n2 = 1;
			}else{
				n2 = 0;
				cnt2--;
				i2++;
				if(i2>=mrg2.size()){
					if(prv!=-INF){
						mrg3.pb({prv, now});
					}
					break;
				}
				t2 = mrg2[i2].first;
			}
		}
		if(cnt1>0 && cnt2>0){
			if(prv==-INF){
				prv = now;
			}
		}else{
			if(prv!=-INF){
				mrg3.pb({prv, now});
				prv = -INF;
			}
		}
	}
	mrg = mrg3;
	mrg3.clear();
	//for(int i=0; i<mrg.size(); i++){
	//	cout<<mrg[i].first<<" "<<mrg[i].second<<endl;
	//}
	return;
}

int main(){
	scanf("%d%d", &N, &K);
	cin>>str;
	int x = 0, y = 0;
	for(int i=1; i<=N+1; i++){
		vt.pb({x, y});
		if(i==N+1)	break;
		if(str[i-1]=='N'){
			y++;
		}else if(str[i-1]=='E'){
			x++;
		}else if(str[i-1]=='W'){
			x--;
		}else{
			y--;
		}
	}
	if(x==0){
		int tmp = x; x = y; y = tmp;
		for(int i=0; i<vt.size(); i++){
			tmp = vt[i].first; vt[i].first = vt[i].second; vt[i].second = tmp;
		}
	}
	//cout<<x<<" "<<y<<endl;
	for(int i=0; i<vt.size(); i++){
		int t;
		if(x==0){
			t = 0;
		}else if(x<0){
			if(vt[i].first==0){
				t = 0;
			}
			else if(vt[i].first>0){
				t = vt[i].first / x;
			}else{
				t = vt[i].first / x + (((vt[i].first/x) * x ==vt[i].first)?0:1);
			}
		}else{
			if(vt[i].first==0){
				t = 0;
			}else if(vt[i].first>0){
				t = vt[i].first/x;
			}else{
				t = vt[i].first / x - (((vt[i].first/x) * x ==vt[i].first)?0:1);
			}
		}
		vt[i].first -= x * t;
		vt[i].second -= y * t;
		//cout<<"a "<<vt[i].first<<" "<<vt[i].second<<" "<<t<<endl;
		mp[vt[i]].pb(t);
		if(vt[i].first==0){
			if(x==0)	continue;
			if(x>0){
				vt[i].first+=x; vt[i].second+=y;
				//cout<<"a "<<vt[i].first<<" "<<vt[i].second<<" "<<t-1<<endl;
				mp[vt[i]].pb(t-1);
			}else{
				vt[i].first-=x; vt[i].second-=y;
				//cout<<"a "<<vt[i].first<<" "<<vt[i].second<<" "<<t+1<<endl;
				mp[vt[i]].pb(t+1);
			}
		}
	}
	//cout<<"**"<<endl;
	for(map<pii, vector<int> >::iterator it = mp.begin(); it!=mp.end(); it++){
		tmp = it->second;
		sort(tmp.begin(), tmp.end());
		mp[it->first] = tmp;
	}
	for(map<pii, vector<int> >::iterator it = mp.begin(); it!=mp.end(); it++){
		pii p = it->first;
		//if(p.first==x)	continue;
		//cout<<"+"<<p.first<<" "<<p.second<<endl;
		//if(x==0){
			if(mp.find({(p.first+1), p.second})==mp.end() || mp.find({p.first, p.second+1})==mp.end() || mp.find({(p.first+1), p.second+1})==mp.end())	continue;
			mrg.clear(); mrg2.clear();
			//cout<<p.first<<" "<<p.second<<endl;
			mrg.pb({-INF, INF}); tmp = mp[p]; merge();
			tmp = mp[{p.first+1, p.second}]; merge();
			tmp = mp[{p.first, p.second+1}]; merge();
			tmp = mp[{p.first+1, p.second+1}]; merge();
			if(x==0){
				if(!mrg.empty()){
					ans++;
				}
				continue;
			}
			for(int i=0; i<mrg.size(); i++){
				ans += mrg[i].second - mrg[i].first + 1;
				//cout<<'*'<<mrg[i].first<<" "<<mrg[i].second<<endl;
			}
		/*}else{
			if(mp.find({p.first+1, p.second})==mp.end() || mp.find({p.first, p.second+1})==mp.end() || mp.find({p.first+1, p.second+1})==mp.end())	continue;
			mrg.clear(); mrg2.clear();
			mrg.pb({1, K}); tmp = mp[p]; merge();
			tmp = mp[{(p.first+1)%x, p.second}]; merge();
			tmp = mp[{p.first, p.second+1}]; merge();
			tmp = mp[{(p.first+1)%x, p.second+1}]; merge();
			for(int i=0; i<mrg.size(); i++){
				ans += mrg[i].second - mrg[i].first;
				cout<<'*'<<mrg[i].first<<" "<<mrg[i].second<<endl;
			}
		}*/
	}
	cout<<ans;
	return 0;
}

Compilation message

2016_ho_t4.cpp: In function 'void merge()':
2016_ho_t4.cpp:42:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<tmp.size(); i++){
               ~^~~~~~~~~~~
2016_ho_t4.cpp:71:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(i1>=mrg.size()){
        ~~^~~~~~~~~~~~
2016_ho_t4.cpp:83:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while(i2+1<mrg2.size() && mrg2[i2+1].first<=mrg2[i2].second){
           ~~~~^~~~~~~~~~~~
2016_ho_t4.cpp:92:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(i2>=mrg2.size()){
        ~~^~~~~~~~~~~~~
2016_ho_t4.cpp: In function 'int main()':
2016_ho_t4.cpp:139:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0; i<vt.size(); i++){
                ~^~~~~~~~~~
2016_ho_t4.cpp:144:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<vt.size(); i++){
               ~^~~~~~~~~~
2016_ho_t4.cpp:207:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int i=0; i<mrg.size(); i++){
                 ~^~~~~~~~~~~
2016_ho_t4.cpp:121:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &N, &K);
  ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 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 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 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 380 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 3 ms 376 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 376 KB Output is correct
20 Correct 2 ms 504 KB Output is correct
21 Correct 2 ms 380 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 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 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 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 380 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 3 ms 376 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 376 KB Output is correct
20 Correct 2 ms 504 KB Output is correct
21 Correct 2 ms 380 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 4 ms 504 KB Output is correct
28 Correct 8 ms 888 KB Output is correct
29 Correct 26 ms 2320 KB Output is correct
30 Correct 32 ms 2536 KB Output is correct
31 Correct 110 ms 13036 KB Output is correct
32 Correct 48 ms 3820 KB Output is correct
33 Correct 52 ms 4072 KB Output is correct
34 Correct 53 ms 4460 KB Output is correct
35 Correct 50 ms 3948 KB Output is correct
36 Correct 42 ms 3088 KB Output is correct
37 Correct 51 ms 4068 KB Output is correct
38 Correct 59 ms 3864 KB Output is correct
39 Correct 49 ms 3948 KB Output is correct
40 Correct 47 ms 3820 KB Output is correct
41 Correct 34 ms 2408 KB Output is correct
42 Correct 41 ms 3140 KB Output is correct
43 Correct 50 ms 3816 KB Output is correct
44 Correct 50 ms 3940 KB Output is correct
45 Correct 44 ms 3688 KB Output is correct
46 Correct 84 ms 6728 KB Output is correct
47 Correct 154 ms 12212 KB Output is correct
48 Correct 22 ms 4076 KB Output is correct
49 Correct 101 ms 12208 KB Output is correct
50 Correct 100 ms 12208 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 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 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 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 380 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 3 ms 376 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 376 KB Output is correct
20 Correct 2 ms 504 KB Output is correct
21 Correct 2 ms 380 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 2 ms 252 KB Output is correct
28 Correct 2 ms 376 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 376 KB Output is correct
32 Correct 2 ms 292 KB Output is correct
33 Correct 2 ms 396 KB Output is correct
34 Correct 2 ms 256 KB Output is correct
35 Correct 2 ms 376 KB Output is correct
36 Correct 2 ms 256 KB Output is correct
37 Correct 2 ms 256 KB Output is correct
38 Correct 2 ms 380 KB Output is correct
39 Correct 2 ms 296 KB Output is correct
40 Correct 2 ms 256 KB Output is correct
41 Correct 2 ms 256 KB Output is correct
42 Correct 2 ms 256 KB Output is correct
43 Correct 2 ms 256 KB Output is correct
44 Correct 2 ms 376 KB Output is correct
45 Correct 2 ms 252 KB Output is correct
46 Correct 2 ms 376 KB Output is correct
47 Correct 2 ms 376 KB Output is correct
48 Correct 2 ms 252 KB Output is correct
49 Correct 2 ms 256 KB Output is correct
50 Correct 2 ms 376 KB Output is correct

Subtask #4
62.0 / 62.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 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 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 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 380 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 3 ms 376 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 376 KB Output is correct
20 Correct 2 ms 504 KB Output is correct
21 Correct 2 ms 380 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 4 ms 504 KB Output is correct
28 Correct 8 ms 888 KB Output is correct
29 Correct 26 ms 2320 KB Output is correct
30 Correct 32 ms 2536 KB Output is correct
31 Correct 110 ms 13036 KB Output is correct
32 Correct 48 ms 3820 KB Output is correct
33 Correct 52 ms 4072 KB Output is correct
34 Correct 53 ms 4460 KB Output is correct
35 Correct 50 ms 3948 KB Output is correct
36 Correct 42 ms 3088 KB Output is correct
37 Correct 51 ms 4068 KB Output is correct
38 Correct 59 ms 3864 KB Output is correct
39 Correct 49 ms 3948 KB Output is correct
40 Correct 47 ms 3820 KB Output is correct
41 Correct 34 ms 2408 KB Output is correct
42 Correct 41 ms 3140 KB Output is correct
43 Correct 50 ms 3816 KB Output is correct
44 Correct 50 ms 3940 KB Output is correct
45 Correct 44 ms 3688 KB Output is correct
46 Correct 84 ms 6728 KB Output is correct
47 Correct 154 ms 12212 KB Output is correct
48 Correct 22 ms 4076 KB Output is correct
49 Correct 101 ms 12208 KB Output is correct
50 Correct 100 ms 12208 KB Output is correct
51 Correct 2 ms 376 KB Output is correct
52 Correct 2 ms 252 KB Output is correct
53 Correct 2 ms 376 KB Output is correct
54 Correct 2 ms 256 KB Output is correct
55 Correct 2 ms 256 KB Output is correct
56 Correct 2 ms 376 KB Output is correct
57 Correct 2 ms 292 KB Output is correct
58 Correct 2 ms 396 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 256 KB Output is correct
62 Correct 2 ms 256 KB Output is correct
63 Correct 2 ms 380 KB Output is correct
64 Correct 2 ms 296 KB Output is correct
65 Correct 2 ms 256 KB Output is correct
66 Correct 2 ms 256 KB Output is correct
67 Correct 2 ms 256 KB Output is correct
68 Correct 2 ms 256 KB Output is correct
69 Correct 2 ms 376 KB Output is correct
70 Correct 2 ms 252 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 252 KB Output is correct
74 Correct 2 ms 256 KB Output is correct
75 Correct 2 ms 376 KB Output is correct
76 Correct 5 ms 504 KB Output is correct
77 Correct 6 ms 632 KB Output is correct
78 Correct 20 ms 2292 KB Output is correct
79 Correct 53 ms 7360 KB Output is correct
80 Correct 34 ms 2540 KB Output is correct
81 Correct 52 ms 4332 KB Output is correct
82 Correct 48 ms 3820 KB Output is correct
83 Correct 32 ms 2536 KB Output is correct
84 Correct 48 ms 3944 KB Output is correct
85 Correct 51 ms 4076 KB Output is correct
86 Correct 91 ms 7788 KB Output is correct
87 Correct 52 ms 4460 KB Output is correct
88 Correct 45 ms 3688 KB Output is correct
89 Correct 48 ms 3760 KB Output is correct
90 Correct 51 ms 4252 KB Output is correct
91 Correct 50 ms 4204 KB Output is correct
92 Correct 50 ms 4200 KB Output is correct
93 Correct 49 ms 4332 KB Output is correct
94 Correct 42 ms 3308 KB Output is correct
95 Correct 41 ms 3356 KB Output is correct
96 Correct 84 ms 6892 KB Output is correct
97 Correct 153 ms 12268 KB Output is correct
98 Correct 20 ms 3308 KB Output is correct
99 Correct 101 ms 12320 KB Output is correct
100 Correct 225 ms 17768 KB Output is correct