Submission #403360

#	Time	Username	Problem	Language	Result	Execution time	Memory
403360		maomao90	조개 줍기 (KOI17_shell)	C++14	12 / 100	2077 ms	26728 KiB

shell

#include <bits/stdc++.h> 
using namespace std;

#define mnto(x, y) x = min(x, (__typeof__(x)) y)
#define mxto(x, y) x = max(x, (__typeof__(x)) y)
#define REP(i, s, e) for (int i = s; i < e; i++)
#define RREP(i, s, e) for (int i = s; i >= e; i--)
typedef long long ll;
typedef long double ld;
#define MP make_pair
#define FI first
#define SE second
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
#define MT make_tuple
typedef tuple<int, int, int> iii;
#define ALL(_a) _a.begin(), _a.end()
#define pb emplace_back
typedef vector<int> vi;
typedef vector<ii> vii;

#define INF 1000000005
#define LINF 1000000000000000005
#define MOD 1000000007
#define MAXN 1505

int n;
int a[MAXN][MAXN];

ll s[MAXN][MAXN];
ll dp() {
	memset(s, 0, sizeof s);
	ll res = 0;
	REP (i, 1, n + 1) {
		REP (j, 1, n + 1) {
			s[i][j] = a[i][j] + max(s[i - 1][j], s[i][j - 1]);
			res += s[i][j];
		}
	}
	return res;
}

int main() {
	scanf("%d", &n);
	REP (i, 1, n + 1) {
		REP (j, 1, n + 1) {
			scanf("%d", &a[i][j]);
		}
	}
	printf("%lld\n", dp());
	REP (i, 0, n) {
		char o; int r, c; scanf(" %c%d%d", &o, &r, &c);
		if (o == 'U') {
			a[r][c]++;
		} else {
			a[r][c]--;
		}
		printf("%lld\n", dp());
	}
	return 0;
}

/*
3
3 2 7
4 2 6
5 3 8
U 1 2
D 3 2
U 1 2
*/

Compilation message (stderr)

shell.cpp: In function 'int main()':
shell.cpp:44:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
shell.cpp:47:9: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |    scanf("%d", &a[i][j]);
      |    ~~~~~^~~~~~~~~~~~~~~~
shell.cpp:52:26: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |   char o; int r, c; scanf(" %c%d%d", &o, &r, &c);
      |                     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 12 / 12
• Subtask 2: 0 / 34
• Subtask 3: 0 / 54