Submission #403410

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
403410	2021-05-13 06:58:37	shenxy	조개 줍기 (KOI17_shell)	C++11	12 / 100	2084 ms	18016 KiB

shell

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#include <cstdio>
#include <algorithm>
#include <set>
using namespace std;
typedef pair<int, int> ii;
int main() {
  int N;
  scanf("%d", &N);
  if (N <= 100) {
    int A[N][N], S[N][N];
    for (int i = 0; i < N; ++i) {
      for (int j = 0; j < N; ++j) scanf("%d", &A[i][j]);
    }
    int r, c, ans = 0;
    char op;
    S[0][0] = A[0][0];
    for (int i = 1; i < N; ++i) S[i][0] = S[i - 1][0] + A[i][0], S[0][i] = S[0][i - 1] + A[0][i];
    for (int i = 1; i < N; ++i) {
      for (int j = 1; j < N; ++j) S[i][j] = max(S[i - 1][j], S[i][j - 1]) + A[i][j];
    }
    for (int i = 0; i < N; ++i) {
      for (int j = 0; j < N; ++j) ans += S[i][j];
    }
    printf("%d\n", ans);
    for (int i = 0; i < N; ++i) {
      scanf(" %c %d %d", &op, &r, &c);
      if (op == 'U') ++A[r - 1][c - 1];
      else --A[r - 1][c - 1];
      S[0][0] = A[0][0];
      ans = 0;
 
 
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Compilation message (stderr)

shell.cpp: In function 'int main()':
shell.cpp:8:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |  scanf("%d", &N);
      |  ~~~~~^~~~~~~~~~
shell.cpp:12:37: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |    for (int j = 0; j < N; ++j) scanf("%d", &A[i][j]);
      |                                ~~~~~^~~~~~~~~~~~~~~~
shell.cpp:26:9: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |    scanf(" %c %d %d", &op, &r, &c);
      |    ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
shell.cpp:43:38: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |    for (int j = 1; j <= N; ++j) scanf("%d", &A[i][j]);
      |                                 ~~~~~^~~~~~~~~~~~~~~~
shell.cpp:47:36: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |   for (int i = 0; i < N; ++i) scanf(" %c %d %d", &op, &r[i], &c[i]), --A[r[i]][c[i]];
      |                               ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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