foo.cc: In function 'int main()':
foo.cc:7:8: warning: unused variable 'j' [-Wunused-variable]
7 | int i,j,len,t1,t2,t3,t4,t5,T,flag,sum1,sum2;
| ^
foo.cc:9:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
9 | scanf("%d",&T);
| ~~~~~^~~~~~~~~
foo.cc:12:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
12 | scanf("%s",str);
| ~~~~~^~~~~~~~~~
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