oj.uz

Submission #570623

# Submission time Handle Problem Language Result Execution time Memory
570623 2022-05-30T18:28:12 Z patrikpavic2 Street Lamps (APIO19_street_lamps) C++17
100 / 100
 2639 ms 329312 KB 
/**
* user:  ppavic
* fname: Patrik
* lname: Pavić
* task:  street-light
* score: 100.0
* date:  2019-07-06 10:35:14.642573
*/
#include <cstdio>
#include <cstring>
#include <cstdlib>
#include <iostream>
#include <vector>
#include <set>
#include <map>
#include <queue>
#include <unordered_map>
#include <ext/pb_ds/assoc_container.hpp>
 
#define X first
#define Y second
#define PB push_back
 
using namespace __gnu_pbds;
using namespace std;
 
typedef long long ll;
typedef pair < int, int > pii;
typedef vector < int > vi;
typedef vector < pii > vp;
 
 
const int NN = 3e5 + 500;
const int M = 1e6 + 500;
const int INF = 0x3f3f3f3f;
const int MOD = 1e9 + 7;
const int LOG = 19;
const int OFF = (1 << LOG);
const int SVE = 2e7 + 500;
 
int n, m, POS, K, K2, I, FL;
 
struct node{
	int L, R;
	int sm = 0, sm2 = 0;
};

node N[SVE];
int TKO = 1;
 
int loga1[2 * OFF], loga2[2 * OFF];
 
void update(int cur, int a,int b){
	N[cur].sm += K, N[cur].sm2 += K2;
	//printf("%d %d += %d\n", a, b, k);
	if(a == b) return;
	if(I <= (a + b) / 2) {
		if(N[cur].L == 0) N[cur].L = TKO++;
		update(N[cur].L, a, (a + b) / 2);
		return;
	}
	if(N[cur].R == 0) N[cur].R = TKO++;
	update(N[cur].R, (a + b) / 2 + 1, b);
}
 
int get(int cur, int a,int b){
	if(cur == 0 || a > I) return 0;
	if(b <= I) {
		if(!FL) return N[cur].sm;
		else return POS * N[cur].sm2 - N[cur].sm;
	}
	return get(N[cur].L, a, (a + b) / 2) + get(N[cur].R, (a + b) / 2 + 1, b);
}
 
inline void dodaj(int x,int y,int k){
	y = n - y + 10; x += 10;
	for(; x < NN; x += x & -x){
		if(loga1[x] == 0) loga1[x] = TKO++;
		I = y, K = k, K2 = 0;
		update(loga1[x], 0, OFF - 1);
	}
}
 
inline int nadi(int x,int y){
	y = n - y + 10; x += 10;
	int ret = 0;
	for(; x ; x -= x & -x){
		I = y, FL = 0;
		ret += get(loga1[x], 0, OFF - 1);
	}
	//printf("ret = %d\n", ret);
	return ret;
}
 
inline void dodaj2(int x,int y,int k,int k2){
	y = n - y + 10; x += 10;
	for(; x < NN; x += x & -x){
		if(loga2[x] == 0) loga2[x] = TKO++;
		I = y, K = k, K2 = k2;
		update(loga2[x], 0, OFF - 1);
	}
}
 
inline int nadi2(int x,int y,int k){
	y = n - y + 10; x += 10; POS = k;
	ll ret = 0;
	for(; x ; x -= x & -x){
		I = y, FL = 1;
		ret += get(loga2[x], 0, OFF - 1);
	}
	//printf("ret = %d\n", ret);
	return ret;
}
 
 
 
set < pii > gr;
int A[NN], L[M], R[M], tren[M], c = 0;
 
int nadi_interval(int x){
	if(x < 0 || x >= n || !A[x]) return -1;
	return (gr.lower_bound({x, 0})) -> Y;
}
 
void makni_interval(int x, int i){
	//printf("Nestaje interval [%d %d], ind = %d tren %d sad %d\n", L[x], R[x], x, tren[x], i);
	dodaj2(L[x], R[x], -tren[x], -1);
	dodaj(L[x], R[x], i - tren[x]);
	gr.erase({R[x], x});
}
 
void dodaj_interval(){
	//printf("Dolazi interval [%d %d], ind = %d tren %d\n", L[c], R[c], c, tren[c]);
	dodaj2(L[c], R[c], tren[c],1);
	gr.insert({R[c], c}); c++;
}
 
int main(){
	scanf("%d%d", &n, &m);
	for(int i = 0;i < n;i++){
		char c; scanf(" %c", &c);
		A[i] = c - '0';
	}
	for(int i = 0;i < n;){
		if(!A[i]){
			i++; continue;
		}
		int j = i;
		for(; j < n && A[j]; j++);
		L[c] = i, R[c] = j - 1; tren[c] = 0;
		dodaj_interval();
		i = j;
	}
	for(int i = 1;i <= m;i++){
		char str[10]; scanf("%s", str);
		if(str[0] == 'q'){
			int l, r; scanf("%d%d", &l, &r); l--, r--, r--;
			//printf("%d %d %d\n", pas.nadi(l, r), cnt_akt.nadi(l, r), akt.nadi(l, r));
			printf("%d\n", nadi(l, r) + nadi2(l, r, i));
		}
		else{
			int x; scanf("%d", &x); x--;
			if(!A[x]){
				int lft = nadi_interval(x - 1);
				int rig = nadi_interval(x + 1);
				int nL = x, nR = x;
				if(lft != -1){
					nL = L[lft];
					makni_interval(lft, i);
				}
				if(rig != -1) {
					nR = R[rig];
					makni_interval(rig, i);
				}
				L[c] = nL, R[c] = nR; tren[c] = i; 
				dodaj_interval();
			}
			else{
				int moj = nadi_interval(x);
				makni_interval(moj, i);
				if(L[moj] != x){
					L[c] = L[moj], R[c] = x - 1, tren[c] = i;
					dodaj_interval();
				}
				if(R[moj] != x){
					L[c] = x + 1, R[c] = R[moj], tren[c] = i;
					dodaj_interval();
				}		
				
			}
			A[x] = !A[x];
		}
	}
	return 0;
}

Compilation message

street_lamps.cpp: In function 'int main()':
street_lamps.cpp:139:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  139 |  scanf("%d%d", &n, &m);
      |  ~~~~~^~~~~~~~~~~~~~~~
street_lamps.cpp:141:16: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  141 |   char c; scanf(" %c", &c);
      |           ~~~~~^~~~~~~~~~~
street_lamps.cpp:155:22: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  155 |   char str[10]; scanf("%s", str);
      |                 ~~~~~^~~~~~~~~~~
street_lamps.cpp:157:19: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  157 |    int l, r; scanf("%d%d", &l, &r); l--, r--, r--;
      |              ~~~~~^~~~~~~~~~~~~~~~
street_lamps.cpp:162:16: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  162 |    int x; scanf("%d", &x); x--;
      |           ~~~~~^~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 131 ms 313424 KB Output is correct
2 Correct 123 ms 313424 KB Output is correct
3 Correct 131 ms 313552 KB Output is correct
4 Correct 133 ms 313420 KB Output is correct
5 Correct 136 ms 313400 KB Output is correct
6 Correct 154 ms 313400 KB Output is correct
7 Correct 124 ms 313440 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 859 ms 316152 KB Output is correct
2 Correct 890 ms 316288 KB Output is correct
3 Correct 1295 ms 316216 KB Output is correct
4 Correct 2078 ms 326460 KB Output is correct
5 Correct 2200 ms 328860 KB Output is correct
6 Correct 2132 ms 329116 KB Output is correct
7 Correct 298 ms 321092 KB Output is correct
8 Correct 308 ms 322596 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 150 ms 313496 KB Output is correct
2 Correct 153 ms 313456 KB Output is correct
3 Correct 134 ms 313448 KB Output is correct
4 Correct 147 ms 313428 KB Output is correct
5 Correct 2605 ms 326016 KB Output is correct
6 Correct 2282 ms 328660 KB Output is correct
7 Correct 1643 ms 328164 KB Output is correct
8 Correct 285 ms 322612 KB Output is correct
9 Correct 329 ms 317084 KB Output is correct
10 Correct 321 ms 317440 KB Output is correct
11 Correct 308 ms 317708 KB Output is correct
12 Correct 285 ms 321040 KB Output is correct
13 Correct 364 ms 322604 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 128 ms 313420 KB Output is correct
2 Correct 153 ms 313516 KB Output is correct
3 Correct 144 ms 313548 KB Output is correct
4 Correct 140 ms 313484 KB Output is correct
5 Correct 520 ms 321972 KB Output is correct
6 Correct 1328 ms 327020 KB Output is correct
7 Correct 1867 ms 328760 KB Output is correct
8 Correct 2639 ms 329312 KB Output is correct
9 Correct 1088 ms 319832 KB Output is correct
10 Correct 1232 ms 319900 KB Output is correct
11 Correct 1073 ms 319564 KB Output is correct
12 Correct 1212 ms 319948 KB Output is correct
13 Correct 1010 ms 319576 KB Output is correct
14 Correct 1242 ms 319816 KB Output is correct
15 Correct 277 ms 321140 KB Output is correct
16 Correct 298 ms 322512 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 131 ms 313424 KB Output is correct
2 Correct 123 ms 313424 KB Output is correct
3 Correct 131 ms 313552 KB Output is correct
4 Correct 133 ms 313420 KB Output is correct
5 Correct 136 ms 313400 KB Output is correct
6 Correct 154 ms 313400 KB Output is correct
7 Correct 124 ms 313440 KB Output is correct
8 Correct 859 ms 316152 KB Output is correct
9 Correct 890 ms 316288 KB Output is correct
10 Correct 1295 ms 316216 KB Output is correct
11 Correct 2078 ms 326460 KB Output is correct
12 Correct 2200 ms 328860 KB Output is correct
13 Correct 2132 ms 329116 KB Output is correct
14 Correct 298 ms 321092 KB Output is correct
15 Correct 308 ms 322596 KB Output is correct
16 Correct 150 ms 313496 KB Output is correct
17 Correct 153 ms 313456 KB Output is correct
18 Correct 134 ms 313448 KB Output is correct
19 Correct 147 ms 313428 KB Output is correct
20 Correct 2605 ms 326016 KB Output is correct
21 Correct 2282 ms 328660 KB Output is correct
22 Correct 1643 ms 328164 KB Output is correct
23 Correct 285 ms 322612 KB Output is correct
24 Correct 329 ms 317084 KB Output is correct
25 Correct 321 ms 317440 KB Output is correct
26 Correct 308 ms 317708 KB Output is correct
27 Correct 285 ms 321040 KB Output is correct
28 Correct 364 ms 322604 KB Output is correct
29 Correct 128 ms 313420 KB Output is correct
30 Correct 153 ms 313516 KB Output is correct
31 Correct 144 ms 313548 KB Output is correct
32 Correct 140 ms 313484 KB Output is correct
33 Correct 520 ms 321972 KB Output is correct
34 Correct 1328 ms 327020 KB Output is correct
35 Correct 1867 ms 328760 KB Output is correct
36 Correct 2639 ms 329312 KB Output is correct
37 Correct 1088 ms 319832 KB Output is correct
38 Correct 1232 ms 319900 KB Output is correct
39 Correct 1073 ms 319564 KB Output is correct
40 Correct 1212 ms 319948 KB Output is correct
41 Correct 1010 ms 319576 KB Output is correct
42 Correct 1242 ms 319816 KB Output is correct
43 Correct 277 ms 321140 KB Output is correct
44 Correct 298 ms 322512 KB Output is correct
45 Correct 547 ms 317004 KB Output is correct
46 Correct 585 ms 317232 KB Output is correct
47 Correct 1040 ms 320612 KB Output is correct
48 Correct 1709 ms 328512 KB Output is correct
49 Correct 318 ms 317532 KB Output is correct
50 Correct 344 ms 317496 KB Output is correct
51 Correct 303 ms 317732 KB Output is correct
52 Correct 315 ms 317988 KB Output is correct
53 Correct 280 ms 318032 KB Output is correct
54 Correct 318 ms 318388 KB Output is correct