oj.uz

Submission #62176

# Submission time Handle Problem Language Result Execution time Memory
62176 2018-07-27T17:48:21 Z gs14004 parentrises (BOI18_parentrises) C++17
100 / 100
 43 ms 6572 KB 
#include<bits/stdc++.h>
using namespace std;
using pi = pair<int, int>;
using lint = long long;
const int MAXN = 1000050;
const int mod = 1e9 + 7;

/*
 * Generator (N^4)
 * Generates ans array in 22min (from my 2015 laptop)
 
int n;
int mem[305][305][2];

int dp(int x1, int x2, int y1, int y2, int numcnt, int curH, int vis){
	if(numcnt < 0 || curH + x1 < 0) return 0;
	if(x2 + y2 == n) return numcnt == 0 && vis && x2 >= x1 && y2 >= y1;
	if(~mem[x2][y2][vis]) return mem[x2][y2][vis];
	int ans = 0;
	if(x2 < x1){
		ans += dp(x1, x2 + 1, y1, y2, numcnt + 2, curH + 1, vis);
	}
	else{
		ans += dp(x1, x2 + 1, y1, y2, numcnt + 1, curH + 1, vis);
	}
	if(y2 < y1){
		ans += dp(x1, x2, y1, y2 + 1, numcnt - 1, curH - 1, vis | ((curH - 1) + x1 == 0));
	}
	else{
		ans += dp(x1, x2, y1, y2 + 1, numcnt - 2, curH - 1, vis | ((curH - 1) + x1 == 0));
	}
	return mem[x2][y2][vis] = ans % mod;
}

int f(int _n){
	n = _n;
	int ans = 0;
	for(int i=0; i<=n; i++){
		for(int j=0; i+j<=n; j++){
			memset(mem, -1, sizeof(mem));
			ans += dp(i, 0, j, 0, 0, 0, i == 0);
			ans %= mod;
		}
	}
	return ans;
}*/

string solve(string s){
	queue<int> que;
	string chk;
	int cnt = 0;
	chk.resize(s.size());
	for(int i=0; i<s.size(); i++){
		if(s[i] == '('){
			que.push(i);
			cnt++;
			chk[i] = '?';
		}
		else{
			if(cnt > 0){
				chk[i] = '!';
				cnt--;
			}
			else{
				if(que.empty()) return "impossible";
				int x = que.front();
				que.pop();
				chk[x] = 'G';
				chk[i] = '!';
			}
		}
	}
	for(int i=(int)s.size()-1; i>=0; i--){
		if(s[i] == ')' && cnt){
			chk[i] = 'G';
			cnt--;
		}
	}
	if(cnt > 0) return "impossible";
	int c0 = 0, c1 = 0;
	for(int i=0; i<s.size(); i++){
		if(s[i] == '('){
			if(chk[i] == 'G') cnt += 2;
			else{
				cnt++;
				if(cnt & 1) chk[i] = 'R';
				else chk[i] = 'B';
			}
			if(chk[i] != 'B') c0++;
			if(chk[i] != 'R') c1++;
		}
		else{
			if(chk[i] == 'G') cnt -= 2;
			else{
				if(cnt & 1) chk[i] = 'R';
				else chk[i] = 'B';
				cnt--;
			}
			if(chk[i] != 'B') c0--;
			if(chk[i] != 'R') c1--;
		}
		if(c0 < 0 || c1 < 0) return "impossible";
	}
	if(c0 == 0 && c1 == 0) return chk;
	else return "impossible";
}

int ans[305] = {0,1,2,2,6,12,18,43,86,148,326,652,1194,2531,5062,9578,19884,39768,76680,157236,314472,613440,1248198,2496396,4906266,9932707,19865414,39237478,79165646,158331292,313801154,631634323,263268639,509707998,43257469,86514938,72895660,288290012,576580024,551498904,962513721,925027435,204521844,634307677,268615347,287719520,559111350,118222693,578936427,105459291,210918582,360752402,920849461,841698915,421349166,985137176,970274345,96196738,666703791,333407575,448451120,71192847,142385694,391328273,82210164,164420328,697441626,75399225,150798450,177655189,77725370,155450740,578770998,806452500,612904993,342317187,437431531,874863062,166780006,649351541,298703075,764861307,105948983,211897966,169754380,332500687,665001374,648783808,296688714,593377428,43060831,684124175,368248343,973819030,849070862,698141717,982308804,88186365,176372730,959772055,320975583,641951166,825442333,311190079,622380158,765671696,14446067,28892134,262223145,966556598,933113189,520941027,287565710,575131420,666019185,263936054,527872108,39283492,877846547,755693087,433079969,737806887,475613767,203965075,701508060,403016113,922600280,277710517,555421034,408729101,377397802,754795604,250532053,528340400,56680793,124734442,232656836,465313672,714603167,631625056,263250105,52648990,389536240,779072480,641256163,302398795,604797590,697370162,632833340,265666673,626109777,298187773,596375546,406717000,515830626,31661245,524137426,667633864,335267721,338047842,390892123,781784246,93415445,65330389,130660778,151215664,822766849,645533691,833650616,380489231,760978462,54775313,491923347,983846694,322809267,940997512,881995017,596258099,507985218,15970429,557503950,859869218,719738429,474482700,767988978,535977949,635491203,387005395,774010790,702061186,253594815,507189630,31838831,822372294,644744581,231777149,215914547,431829094,482869402,576014681,152029355,369499245,244741222,489482444,95772722,952809165,905618323,304323137,304632041,609264082,102336119,335070266,670140532,858231094,960619772,921239537,859847032,56893721,113787442,360033502,982628521,965257035,849451750,439416129,878832258,991939394,464496385,928992770,267785589,802816545,605633083,763528731,474974661,949949322,864267253,946087508,892175009,476000768,273171027,546342054,550581443,469352643,938705286,624000951,673806443,347612879,434823692,233016716,466033432,103642988,440059594,880119188,788176043,40656596,81313192,286602731,202636014,405272028,733717711,472596468,945192936,553096598,892385168,784770329,912447619,707646096,415292185,526477156,861291715,722583423,111861393,588150125,176300243,301383510,244253166,488506332,629844702,421869639,843739278,290375226,384946885,769893770,95673275,473895679,947791358,891751001,164209639,328419278,62075416,175112411,350224822,934621064,806088783,612177559,897003764,948394637,896789267,953901352,418921686,837843372};

int main(){
	char buf[MAXN];
	int p, t; cin >> p;
	if(p == 1){
		scanf("%d",&t);
		while(t--){
			scanf("%s",buf);
			string ans = buf;
			printf("%s\n", solve(buf).c_str());
		}
	}
	else{
		scanf("%d",&t);
		while(t--){
			int x; cin >> x; cout << ans[x-1] << endl;
		}
	}
}

Compilation message

parentrises.cpp: In function 'std::__cxx11::string solve(std::__cxx11::string)':
parentrises.cpp:53:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<s.size(); i++){
               ~^~~~~~~~~
parentrises.cpp:81:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<s.size(); i++){
               ~^~~~~~~~~
parentrises.cpp: In function 'int main()':
parentrises.cpp:114:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&t);
   ~~~~~^~~~~~~~~
parentrises.cpp:116:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%s",buf);
    ~~~~~^~~~~~~~~~
parentrises.cpp:122:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&t);
   ~~~~~^~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 248 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 3 ms 636 KB Output is correct
4 Correct 2 ms 636 KB Output is correct
5 Correct 3 ms 636 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 636 KB Output is correct
2 Correct 2 ms 636 KB Output is correct
3 Correct 3 ms 636 KB Output is correct
4 Correct 2 ms 636 KB Output is correct
5 Correct 4 ms 636 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 636 KB Output is correct
2 Correct 2 ms 636 KB Output is correct
3 Correct 3 ms 636 KB Output is correct
4 Correct 2 ms 636 KB Output is correct
5 Correct 4 ms 636 KB Output is correct
6 Correct 3 ms 636 KB Output is correct
7 Correct 2 ms 636 KB Output is correct
8 Correct 3 ms 636 KB Output is correct
9 Correct 3 ms 636 KB Output is correct
10 Correct 3 ms 636 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 636 KB Output is correct
2 Correct 2 ms 636 KB Output is correct
3 Correct 3 ms 636 KB Output is correct
4 Correct 2 ms 636 KB Output is correct
5 Correct 4 ms 636 KB Output is correct
6 Correct 3 ms 636 KB Output is correct
7 Correct 2 ms 636 KB Output is correct
8 Correct 3 ms 636 KB Output is correct
9 Correct 3 ms 636 KB Output is correct
10 Correct 3 ms 636 KB Output is correct
11 Correct 3 ms 636 KB Output is correct
12 Correct 2 ms 636 KB Output is correct
13 Correct 4 ms 636 KB Output is correct
14 Correct 3 ms 652 KB Output is correct
15 Correct 3 ms 668 KB Output is correct
16 Correct 8 ms 668 KB Output is correct
17 Correct 6 ms 1232 KB Output is correct
18 Correct 5 ms 1232 KB Output is correct
19 Correct 5 ms 1232 KB Output is correct
20 Correct 5 ms 1232 KB Output is correct
21 Correct 43 ms 1308 KB Output is correct
22 Correct 36 ms 6572 KB Output is correct
23 Correct 25 ms 6572 KB Output is correct
24 Correct 34 ms 6572 KB Output is correct
25 Correct 35 ms 6572 KB Output is correct

Subtask #5
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6572 KB Output is correct

Subtask #6
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6572 KB Output is correct
2 Correct 3 ms 6572 KB Output is correct

Subtask #7
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6572 KB Output is correct
2 Correct 3 ms 6572 KB Output is correct
3 Correct 3 ms 6572 KB Output is correct