Submission #22834

#	Time	Username	Problem	Language	Result	Execution time	Memory
22834		AcornCkiGs14004Team (#40)	hi (KRIII5_HI)	C++14	2 / 7	6 ms	2192 KiB

HI

#include <stdio.h>
#include <algorithm>
#include <assert.h>
#include <cmath>
#include <complex>
#include <deque>
#include <functional>
#include <iostream>
#include <limits.h>
#include <map>
#include <math.h>
#include <queue>
#include <set>
#include <stdlib.h>
#include <string.h>
#include <string>
#include <time.h>
#include <unordered_map>
#include <unordered_set>
#include <vector>

#pragma warning(disable:4996)
#pragma comment(linker, "/STACK:336777216")
using namespace std;

#define mp make_pair
#define Fi first
#define Se second
#define pb(x) push_back(x)
#define szz(x) ((int)(x).size())
#define rep(i, n) for(int i=0;i<n;i++)
#define all(x) (x).begin(), (x).end()
#define ldb ldouble

typedef tuple<int, int, int> t3;
typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef long double ldb;
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;
typedef pair <ll, int> pli;
typedef pair <db, db> pdd;

int IT_MAX = 1 << 19;
const ll MOD = 1000000007;
const int INF = 0x3f3f3f3f;
const ll LL_INF = 1034567890123456789ll;
const db PI = acos(-1);
const db ERR = 1E-11;

int in[105];

ll dp[105][105][2];
int main() {
	int N, i, j, k;
	scanf("%d", &N);
	if (N != 2) return 0;

	scanf("%d %d", &in[1], &in[2]);

	for (i = 1; i <= 100; i++) dp[i][0][1] = i;
	for (i = 1; i <= 100; i++) {
		for (j = 1; j <= 100; j++) {
			for (k = 1; k <= i; k++) dp[i][j][1] = (dp[i][j][1] + dp[i - k][j][0] * k) % MOD;
			for (k = 1; k <= j; k++) dp[i][j][0] = (dp[i][j][0] + dp[i][j - k][1] * k) % MOD;
		}
	}

	ll ans = 0;
	for (i = 0; i <= in[1] - 1; i++) {
		for (j = 0; i+j <= in[1] - 1; j++) {
			ans = (ans + dp[in[2]][in[1] - i - j - 1][1] * (i+j+1)) % MOD;
		}
	}
	for (i = 0; i <= in[2] - 1; i++) {
		for (j = 0; i + j <= in[2] - 1; j++) {
			ans = (ans + dp[in[1]][in[2] - i - j - 1][1] * (i + j + 1)) % MOD;
		}
	}
	return !printf("%lld\n", ans);
}

Compilation message (stderr)

HI.cpp:22:0: warning: ignoring #pragma warning  [-Wunknown-pragmas]
 #pragma warning(disable:4996)
 ^
HI.cpp:23:0: warning: ignoring #pragma comment  [-Wunknown-pragmas]
 #pragma comment(linker, "/STACK:336777216")
 ^
HI.cpp: In function 'int main()':
HI.cpp:57:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
                 ^
HI.cpp:60:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &in[1], &in[2]);
                                ^

• Subtask 1: 2 / 2
• Subtask 2: 0 / 5