Submission #151757

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
151757	2019-09-04 14:57:14	arnold518	조개 줍기 (KOI17_shell)	C++14	100 / 100	618 ms	62332 KiB

shell

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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int MAXN = 1500;
int N;
ll A[MAXN+10][MAXN+10], B[MAXN+10][MAXN+10], ans;
struct BIT
{
    ll tree[MAXN+10];
    void update(int i, ll val) { for(; i<=N; i+=(i&-i)) tree[i]+=val; }
    ll query(int i) { ll ret=0; for(; i>0; i-=(i&-i)) ret+=tree[i]; return ret; }
};
BIT bit[MAXN+10];
ll query(int y, int x, int val)
{
    int i, j;
    int s=x, e=x;
    //printf("=========\n");
    //for(i=1; i<=N; i++) { for(j=1; j<=N; j++) printf("%d ", bit[i].query(j)); printf("\n"); }
    //printf("=========\n");
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

shell.cpp: In function 'll query(int, int, int)':
shell.cpp:23:12: warning: unused variable 'j' [-Wunused-variable]
     int i, j;
            ^
shell.cpp: In function 'int main()':
shell.cpp:71:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &N);
     ~~~~~^~~~~~~~~~
shell.cpp:72:50: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(i=1; i<=N; i++) for(j=1; j<=N; j++) scanf("%lld", &A[i][j]);
                                             ~~~~~^~~~~~~~~~~~~~~~~~
shell.cpp:82:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("\n%c%d%d", &t, &y, &x);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

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