Submission #844485

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
8444852023-09-05 13:29:38konberXORanges (eJOI19_xoranges)C++14
55 / 100
1018 ms3724 KiB
#include <iostream>
#include <vector>
using namespace std;
int main()
{
int N, Q;
scanf("%d%d", &N, &Q);
vector<int> a(N+1);
for(int i=1; i <= N; i++)
scanf("%d", &a[i]);
while(Q--){
int q, i, j;
scanf("%d%d%d", &q, &i, &j);
if(q==1){
a[i] = j;
}
else{
int ans=0;
for(int k=i; k <= j; k++){
int pl = (k-i+1)*(j-k+1);
if(pl%2==1) ans ^= a[k];
}
printf("%d\n", ans);
}
}
}
 
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Compilation message (stderr)

xoranges.cpp: In function 'int main()':
xoranges.cpp:9:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |     scanf("%d%d", &N, &Q);
      |     ~~~~~^~~~~~~~~~~~~~~~
xoranges.cpp:12:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |         scanf("%d", &a[i]);
      |         ~~~~~^~~~~~~~~~~~~
xoranges.cpp:16:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |         scanf("%d%d%d", &q, &i, &j);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~
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