oj.uz

Submission #128668

# Submission time Handle Problem Language Result Execution time Memory
128668 2019-07-11T08:16:21 Z sheyasutaka XOR Sum (info1cup17_xorsum) C
7 / 100
 1600 ms 62816 KB 
#if 0
cat <<EOF >mistaken-paste
#endif
// thx Ebi-chan!

#pragma GCC diagnostic ignored "-Wincompatible-pointer-types"
#define _USE_MATH_DEFINES

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <math.h>
#include <time.h>

#define BIG 2000000007
#define VERYBIG 20000000000000007LL

#define MOD 1000000007
#define FOD  998244353
typedef uint64_t ull;
typedef  int64_t sll;

#define N_MAX 1048576

#ifdef __cplusplus
#include <queue>
#include <stack>
#include <tuple>
#include <set>
#include <map>
#include <string>
#include <algorithm>
#include <functional>
#include <array>

using std::queue;
using std::priority_queue;
using std::stack;
using std::tuple;
using std::set;
using std::map;
using std::vector;
using std::greater;
using std::pair;
using std::string;
using std::get;

template <typename T, typename U>
pair<T, U> operator+(pair<T, U> l, pair<T, U> r) {
	return pair<T, U>(l.first + r.first, l.second + r.second);
}

#endif

typedef struct {
	sll a;
	sll b;
} hwll;

typedef struct {
	sll a;
	sll b;
	sll c;
} hwllc;

typedef struct {
	hwll a;
	hwll b;
} linell;

typedef struct {
	double a;
	double b;
} hwreal;

ull n, m;
ull h, w;
ull k;
ull q;
sll va, vb, vc, vd, ve, vf;
ull ua, ub, uc, ud, ue, uf;
long double vra, vrb, vrc;
double vda, vdb, vdc;
char ch, dh;

ull umin (ull x, ull y) {
	return (x < y) ? x : y;
}

ull umax (ull x, ull y) {
	return (x > y) ? x : y;
}

sll smin (sll x, sll y) {
	return (x < y) ? x : y;
}

sll smax (sll x, sll y) {
	return (x > y) ? x : y;
}

ull gcd (ull x, ull y) {
	if (y == 0) {
		return x;
	} else {
		return gcd(y, x % y);
	}
}

ull bitpow (ull a, ull x, ull modulo) {
	ull result = 1;
	while (x) {
		if (x & 1) {
			result *= a;
			result %= modulo;
		}
		x /= 2;
		a = (a * a) % modulo;
	}
	return result;
}

ull divide (ull a, ull b, ull modulo) {
	return (a * bitpow(b, modulo - 2, modulo)) % modulo;
}

ull udiff (ull a, ull b) {
	if (a >= b) {
		return a - b;
	} else {
		return b - a;
	}
}

sll sdiff (sll a, sll b) {
	if (a >= b) {
		return a - b;
	} else {
		return b - a;
	}
}

int bitcount (ull n) {
	int result = 0;
	while (n) {
		if (n & 1) result++;
		n /= 2;
	}
	return result;
}

#define BEGCMP(NAME) int32_t NAME (const void *left, const void *right)
#define DEFLR(TYPE) TYPE l=*(TYPE*)left,r=*(TYPE*)right
#define CMPRET(L, R) if((L)<(R))return-1;if((L)>(R))return+1

// int32_t pullcomp (const void *left, const void *right) {
// 	ull l = *(ull*)left;
// 	ull r = *(ull*)right;
// 	if (l < r) {
// 		return -1;
// 	}
// 	if (l > r) {
// 		return +1;
// 	}
// 	return 0;
// }
BEGCMP(pullcomp){
	DEFLR(ull);
	CMPRET(l, r);
	return 0;
}
BEGCMP(prevcomp){
	DEFLR(sll);
	CMPRET(r, l);
	return 0;
}
BEGCMP(psllcomp){
	DEFLR(sll);
	CMPRET(l, r);
	return 0;
}
BEGCMP(pcharcomp){
	DEFLR(char);
	CMPRET(l, r);
	return 0;
}
BEGCMP(pdoublecomp){
	DEFLR(double);
	CMPRET(l, r);
	return 0;
}

int32_t pstrcomp (const void *left, const void *right) {
	char* l = *(char**)left;
	char* r = *(char**)right;

	return strcmp(l, r);
}

BEGCMP(phwllABcomp){
	DEFLR(hwll);
	CMPRET(l.a, r.a);
	CMPRET(l.b, r.b);
	return 0;
}
BEGCMP(phwllREVcomp){
	DEFLR(hwll);
	CMPRET(l.b, r.b);
	CMPRET(l.a, r.a);
	return 0;
}
BEGCMP(ptriplecomp){
	DEFLR(hwllc);
	CMPRET(l.a, r.a);
	CMPRET(l.b, r.b);
	CMPRET(l.c, r.c);
	return 0;
}
BEGCMP(ptripleREVcomp){
	DEFLR(hwllc);
	CMPRET(l.b, r.b);
	CMPRET(l.a, r.a);
	CMPRET(l.c, r.c);
	return 0;
}
BEGCMP(ptripleCABcomp){
	DEFLR(hwllc);
	CMPRET(l.c, r.c);
	CMPRET(l.a, r.a);
	CMPRET(l.b, r.b);
	return 0;
}
BEGCMP(phwrealcomp){
	DEFLR(hwreal);
	CMPRET(l.a, r.a);
	CMPRET(l.b, r.b);
	return 0;
}

int32_t pquadcomp (const void *left, const void *right) {
	linell l = *(linell*)left;
	linell r = *(linell*)right;

	sll ac = phwllABcomp(&(l.a), &(r.a));
	if (ac) return ac;
	sll bc = phwllABcomp(&(l.b), &(r.b));
	if (bc) return bc;

	return 0;
}
int32_t pfracomp (const void *left, const void *right) {
	hwllc l = *(hwllc*)left;
	hwllc r = *(hwllc*)right;

	CMPRET(l.a * r.b, l.b * r.a);
	return 0;
}

bool isinrange (sll left, sll x, sll right) {
	return (left <= x && x <= right);
}

bool isinrange_soft (sll left, sll x, sll right) {
	return (left <= x && x <= right) || (left >= x && x >= right);
}

void sw (sll *l, sll *r) {
	sll t = *l;
	*l = *r;
	*r = t;
}

sll a[N_MAX + 5];
// ull a[N_MAX + 5];
// sll a[3001][3001];
sll b[N_MAX + 5];
// ull b[N_MAX + 5];
// sll b[3001][3001];
sll c[N_MAX + 5];
sll d[N_MAX + 5];
sll e[N_MAX * 4];
char s[N_MAX + 1];
// char s[3010][3010];
char t[N_MAX + 1];
// char t[3010][3010];
char u[N_MAX + 1];
hwll xy[N_MAX * 2 + 5];
hwllc tup[N_MAX + 5];
// sll table[3005][3005];
ull gin[N_MAX];
// here we go

int seg[1048576 * 2], base = 1048576;

int lb (sll x) {
	int ok = n, ng = -1;
	while (ng + 1 < ok) {
		int med = (ok + ng) / 2;
		if (xy[med].a >= x) {
			ok = med;
		} else {
			ng = med;
		}
	}
	// printf("%lld lb: %d\n", x, ok);
	return ok;
}
int seg_add (int v) {
	v += base;
	while (v) {
		seg[v]++;
		v >>= 1;
	}
}
int seg_find (int l, int r) {
	int x = 0;
	for ((l += base), (r += base); l < r; (l >>= 1), (r >>= 1)) {
		if (l & 1) x += seg[l++];
		if (r & 1) x += seg[--r];
	}
	return x;
}

ull solve () {
	sll i, j, ki, li;
	// ull result = 0;
	sll result = 0;
	double dresult = 0;
	// ull maybe = 0;
	sll maybe = 0;
	// ull sum = 0;
	sll sum = 0;
	sll item;
	sll *dpcell;

	// n = 3000;
	// for (i = 0; i < n; i++) {
	// 	a[i] = i * i;
	// }

	// if (n > 4000) abort();

	for (i = 0; i < 32; i++) {
		for (j = 0; j < n; j++) {
			b[j] = (a[j] & ((1LL << i) * 2 - 1));
			// if (i < 4) printf("%lld@[%lld]: %lld\n", i, j, b[j]);
			xy[j] = (hwll){b[j], j};
		}
		qsort(xy, n, sizeof(hwll), phwllABcomp);
		for (j = 0; j < n; j++) {
			c[xy[j].b] = j;
		}
		for (j = base * 2 - 1; j; j--) seg[j] = 0;

		ull cnt = 0;
		for (j = 0; j < n; j++) {
			seg_add(c[j]);
			// if (i < 4) printf("add: %lld\n", c[j]);
			sll cl = (1LL << i), cr = ((1LL << i) * 2 - 1);
			if (b[j] >= (1LL << i)) {
				sll l = cl + cl - b[j];
				sll r = cr + cl - b[j];
				// if (i < 4) printf("%lld - [%lld, %lld]\n", j + 1, l, r);
				cnt += (j + 1) - seg_find(lb(l), lb(r + 1));
			} else {
				sll l = cl - b[j];
				sll r = cr - b[j];
				// if (i < 4) printf("[%lld, %lld]\n", l, r);

				cnt += seg_find(lb(l), lb(r + 1));
			}
			// if (i < 4) printf("%lld:%lld: %lld...\n", i, j, cnt);
		}

		if (cnt & 1LL) result |= (1LL << i);
	}

	// maybe = 0;
	// for (i = 0; i < n; i++) {
	// 	for (j = i; j < n; j++) {
	// 		maybe ^= (a[i] + a[j]);
	// 	}
	// }
	// printf("true: %lld\n", maybe);

	printf("%lld\n", result);
	// printf("%.15f\n", dresult);
	// puts(s);

	return 0;

	success:
	// puts("YES");
	puts("Yes");
	// printf("%llu\n", result);
	// puts("0");
	// puts("First");
	return 0;

	fail:
	// puts("NO");
	// puts("No");
	// puts("0");
	puts("-1");
	// puts("-1 -1 -1");
	// puts("Second");
	return 1;
}

int32_t main (int argc, char *argv[]) {
	int32_t i, j;

	n = 5;
	m = 0;

	// scanf("%llu%llu", &h, &w);
	scanf("%llu", &n, &m);
	// scanf("%llu", &k, &n, &m);
	// scanf("%llu%llu", &h, &w);
	// scanf("%llu", &q);
	// scanf("%lld", &va, &vb, &vc, &vd);
	// va--;
	// vb--;
	// scanf("%llu%llu%llu%llu", &ua, &ub, &uc, &ud, &ue);
	// scanf("%s", s);
	// scanf("%s", t);
	// scanf("%s", u);
	// scanf("%llu", &k);
	// scanf("%lld", &m);
	// for (i = 0; i < n; i++) {
	// 	// scanf("%lld", &a[i]);
	// 	scanf("%lld", &d[i]);
	// }
	// scanf("%llu", &q);
	for (i = 0; i < n; i++) {
		// scanf("%lld%lld", &xy[i].a, &xy[i].b);
		// scanf("%lld%lld%lld", &tup[i].a, &tup[i].b, &tup[i].c);
		// scanf("%lld", &c[i]);

		scanf("%lld", &a[i]);
		// scanf("%lld", &b[i]);
		// scanf("%lld", &c[i]);
		// scanf("%lld", &d[i]);
		// a[i]--;
		// b[i]--;
		// c[i]--;
		// d[i]--;
		// xy[i].a--;
		// xy[i].b--;
		// tup[i].a--;
		// tup[i].b--;
	}
	// scanf("%llu", &m);
	// for (i = 0; i < n; i++) {
	// 	// scanf("%lld%lld", &a[i], &b[i]);
	// 	scanf("%lld", &b[i]);
	// 	// a[i]--;
	// 	// b[i]--;
	// 	// scanf("%lld", &c[i]);
	// 	// scanf("%lld", &d[i]);
	// 	// scanf("%lld", &e[i]);
	// 	// c[i]--;
	// 	// d[i]--;
	// }

	// for (i = 0; i < q; i++) {
	// 	// scanf("%lld%lld", &xy[i].a, &xy[i].b);
	// 	scanf("%lld", &c[i]);
	// 	// xy[i].a--;
	// 	// xy[i].b--;
	// }

	// for (i = 0; i < n; i++) {
	// 	for (j = 0; j < m; j++) {
	// 		scanf("%lld", &table[i][j]);
	// 		// table[i][j]--;
	// 	}
	// }
	// for (i = 0; i < h; i++) {
	// 	scanf("%s", s[i]);
	// }
	// scanf("%llu", &q);

	solve();

	return 0;
}

Compilation message

xorsum.c: In function 'solve':
xorsum.c:388:13: warning: format '%lld' expects argument of type 'long long int', but argument 2 has type 'sll {aka long int}' [-Wformat=]
  printf("%lld\n", result);
          ~~~^
          %ld
xorsum.c:402:2: warning: label 'fail' defined but not used [-Wunused-label]
  fail:
  ^~~~
xorsum.c:394:2: warning: label 'success' defined but not used [-Wunused-label]
  success:
  ^~~~~~~
xorsum.c:336:7: warning: unused variable 'dpcell' [-Wunused-variable]
  sll *dpcell;
       ^~~~~~
xorsum.c:335:6: warning: unused variable 'item' [-Wunused-variable]
  sll item;
      ^~~~
xorsum.c:334:6: warning: unused variable 'sum' [-Wunused-variable]
  sll sum = 0;
      ^~~
xorsum.c:332:6: warning: unused variable 'maybe' [-Wunused-variable]
  sll maybe = 0;
      ^~~~~
xorsum.c:330:9: warning: unused variable 'dresult' [-Wunused-variable]
  double dresult = 0;
         ^~~~~~~
xorsum.c:327:16: warning: unused variable 'li' [-Wunused-variable]
  sll i, j, ki, li;
                ^~
xorsum.c:327:12: warning: unused variable 'ki' [-Wunused-variable]
  sll i, j, ki, li;
            ^~
xorsum.c: In function 'main':
xorsum.c:419:12: warning: format '%llu' expects argument of type 'long long unsigned int *', but argument 2 has type 'ull * {aka long unsigned int *}' [-Wformat=]
  scanf("%llu", &n, &m);
         ~~~^   ~~
         %lu
xorsum.c:419:8: warning: too many arguments for format [-Wformat-extra-args]
  scanf("%llu", &n, &m);
        ^~~~~~
xorsum.c:442:13: warning: format '%lld' expects argument of type 'long long int *', but argument 2 has type 'sll * {aka long int *}' [-Wformat=]
   scanf("%lld", &a[i]);
          ~~~^   ~~~~~
          %ld
xorsum.c:413:13: warning: unused variable 'j' [-Wunused-variable]
  int32_t i, j;
             ^
xorsum.c: In function 'seg_add':
xorsum.c:316:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
xorsum.c: In function 'main':
xorsum.c:419:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%llu", &n, &m);
  ^~~~~~~~~~~~~~~~~~~~~
xorsum.c:442:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld", &a[i]);
   ^~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 102 ms 8876 KB Output is correct
2 Correct 103 ms 8696 KB Output is correct

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1642 ms 62816 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1642 ms 62816 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 102 ms 8876 KB Output is correct
2 Correct 103 ms 8696 KB Output is correct
3 Execution timed out 1649 ms 14188 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 102 ms 8876 KB Output is correct
2 Correct 103 ms 8696 KB Output is correct
3 Execution timed out 1642 ms 62816 KB Time limit exceeded
4 Halted 0 ms 0 KB -